init

vllm/transformers_utils/__init__.py

@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from vllm import envs
+
+if envs.VLLM_USE_MODELSCOPE:
+    try:
+        # Patch here, before each import happens
+        import modelscope
+        from packaging import version
+
+        # patch_hub begins from modelscope>=1.18.1
+        if version.parse(modelscope.__version__) <= version.parse('1.18.0'):
+            raise ImportError(
+                'Using vLLM with ModelScope needs modelscope>=1.18.1, please '
+                'install by `pip install modelscope -U`')
+        from modelscope.utils.hf_util import patch_hub
+
+        # Patch hub to download models from modelscope to speed up.
+        patch_hub()
+    except ImportError as err:
+        raise ImportError(
+            "Please install modelscope>=1.18.1 via "
+            "`pip install modelscope>=1.18.1` to use ModelScope.") from err

vllm/transformers_utils/chat_templates/__init__.py

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from .registry import get_chat_template_fallback_path
+
+__all__ = ["get_chat_template_fallback_path"]

vllm/transformers_utils/chat_templates/registry.py

@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from pathlib import Path
+from typing import Callable, Optional, Union
+
+from vllm.logger import init_logger
+
+logger = init_logger(__file__)
+
+CHAT_TEMPLATES_DIR = Path(__file__).parent
+
+ChatTemplatePath = Union[Path, Callable[[str], Optional[Path]]]
+
+
+def _get_qwen_chat_template_fallback(
+        tokenizer_name_or_path: str) -> Optional[Path]:
+    if tokenizer_name_or_path.endswith("-Chat"):
+        return CHAT_TEMPLATES_DIR / "template_chatml.jinja"
+
+    return CHAT_TEMPLATES_DIR / "template_basic.jinja"
+
+
+def _get_minicpmv_chat_template_fallback(
+        tokenizer_name_or_path: str) -> Optional[Path]:
+    # MiniCPM-V-4.5 version uses a dedicated template
+    if "4.5" in tokenizer_name_or_path or "4_5" in tokenizer_name_or_path:
+        return CHAT_TEMPLATES_DIR / "template_minicpmv45.jinja"
+
+    # Other versions use chatml template
+    return CHAT_TEMPLATES_DIR / "template_chatml.jinja"
+
+
+# yapf: disable
+_MODEL_TYPE_TO_CHAT_TEMPLATE_FALLBACK: dict[str, ChatTemplatePath] = {
+    "blip-2": CHAT_TEMPLATES_DIR / "template_blip2.jinja",
+    "chameleon": CHAT_TEMPLATES_DIR / "template_basic.jinja",
+    "deepseek_vl_v2": CHAT_TEMPLATES_DIR / "template_deepseek_vl2.jinja",
+    "fuyu": CHAT_TEMPLATES_DIR / "template_fuyu.jinja",
+    "minicpmv": _get_minicpmv_chat_template_fallback,
+    "paligemma": CHAT_TEMPLATES_DIR / "template_basic.jinja",
+    "qwen": _get_qwen_chat_template_fallback,
+}
+# yapf: enable
+
+
+def register_chat_template_fallback_path(
+    model_type: str,
+    chat_template: ChatTemplatePath,
+) -> None:
+    if model_type in _MODEL_TYPE_TO_CHAT_TEMPLATE_FALLBACK:
+        logger.warning(
+            "Model type %s already has a chat template registered. "
+            "It will be overwritten by the new chat template %s.", model_type,
+            chat_template)
+
+    _MODEL_TYPE_TO_CHAT_TEMPLATE_FALLBACK[model_type] = chat_template
+
+
+def get_chat_template_fallback_path(
+    model_type: str,
+    tokenizer_name_or_path: str,
+) -> Optional[Path]:
+    chat_template = _MODEL_TYPE_TO_CHAT_TEMPLATE_FALLBACK.get(model_type)
+    if callable(chat_template):
+        chat_template = chat_template(tokenizer_name_or_path)
+
+    if chat_template is None:
+        return None
+
+    return chat_template

vllm/transformers_utils/chat_templates/template_basic.jinja

@@ -0,0 +1,3 @@
+{%- for message in messages -%}
+    {{- message['content'] -}}
+{%- endfor -%}

vllm/transformers_utils/chat_templates/template_blip2.jinja

@@ -0,0 +1,11 @@
+{%- for message in messages -%}
+    {%- if message['role'] == 'user' -%}
+        {{- 'Question: ' + message['content'] + ' ' -}}
+    {%- elif message['role'] == 'assistant' -%}
+        {{- 'Answer: ' + message['content'] + ' ' -}}
+    {%- endif -%}
+{%- endfor -%}
+
+{%- if add_generation_prompt -%}
+    {{- 'Answer:' -}}
+{% endif %}

vllm/transformers_utils/chat_templates/template_chatml.jinja

@@ -0,0 +1,10 @@
+{%- for message in messages -%}
+    {{- '<|im_start|>' + message['role'] + '\n' + message['content'] -}}
+    {%- if (loop.last and add_generation_prompt) or not loop.last -%}
+        {{- '<|im_end|>' + '\n' -}}
+    {%- endif -%}
+{%- endfor -%}
+
+{%- if add_generation_prompt and messages[-1]['role'] != 'assistant' -%}
+    {{- '<|im_start|>assistant\n' -}}
+{%- endif -%}

vllm/transformers_utils/chat_templates/template_deepseek_vl2.jinja

@@ -0,0 +1,23 @@
+{%- if messages[0]['role'] == 'system' -%}
+    {%- set system_message = messages[0]['content'] -%}
+    {%- set messages = messages[1:] -%}
+{%- else -%}
+    {% set system_message = '' -%}
+{%- endif -%}
+
+{{ bos_token + system_message }}
+{%- for message in messages -%}
+    {%- if (message['role'] == 'user') != (loop.index0 % 2 == 0) -%}
+        {{ raise_exception('Conversation roles must alternate user/assistant/user/assistant/...') }}
+    {%- endif -%}
+
+    {%- if message['role'] == 'user' -%}
+        {{ '<|User|>: ' + message['content'] + '\n\n' }}
+    {%- elif message['role'] == 'assistant' -%}
+        {{ '<|Assistant|>: ' + message['content'] + eos_token + '\n\n' }}
+    {%- endif -%}
+{%- endfor -%}
+
+{%- if add_generation_prompt -%}
+    {{ '<|Assistant|>: ' }}
+{%- endif -%}

vllm/transformers_utils/chat_templates/template_fuyu.jinja

@@ -0,0 +1,3 @@
+{%- for message in messages -%}
+    {{- message['content'] + '\n' -}}
+{%- endfor -%}

vllm/transformers_utils/chat_templates/template_minicpmv45.jinja

@@ -0,0 +1,93 @@
+{%- set enable_thinking = enable_thinking | default(false) %}
+{%- if tools %}
+    {{- '<|im_start|>system\n' }}
+    {%- if messages[0].role == 'system' %}
+        {{- messages[0].content + '\n\n' }}
+    {%- endif %}
+    {{- "# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>" }}
+    {%- for tool in tools %}
+        {{- "\n" }}
+        {{- tool | tojson }}
+    {%- endfor %}
+    {{- "\n</tools>\n\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n<tool_call>\n{\"name\": <function-name>, \"arguments\": <args-json-object>}\n</tool_call><|im_end|>\n" }}
+{%- else %}
+    {%- if messages[0].role == 'system' %}
+        {{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
+    {%- endif %}
+{%- endif %}
+
+{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
+{%- for message in messages[::-1] %}
+    {%- set index = (messages|length - 1) - loop.index0 %}
+    {%- if ns.multi_step_tool and message.role == "user" and not(message.content.startswith('<tool_response>') and message.content.endswith('</tool_response>')) %}
+        {%- set ns.multi_step_tool = false %}
+        {%- set ns.last_query_index = index %}
+    {%- endif %}
+{%- endfor %}
+
+{%- for message in messages %}
+    {%- if (message.role == "user") or (message.role == "system" and not loop.first) %}
+        {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' + '\n' }}
+    {%- elif message.role == "assistant" %}
+        {%- set content = message.content %}
+        {%- set reasoning_content = '' %}
+        {%- if message.reasoning_content is defined and message.reasoning_content is not none %}
+            {%- set reasoning_content = message.reasoning_content %}
+        {%- else %}
+            {%- if '</think>' in message.content %}
+                {%- set content = message.content.split('</think>')[-1].lstrip('\n') %}
+                {%- set reasoning_content = message.content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
+            {%- endif %}
+        {%- endif %}
+        {%- if loop.index0 > ns.last_query_index %}
+            {%- if loop.last or (not loop.last and reasoning_content) %}
+                {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content.strip('\n') + '\n</think>\n\n' + content.lstrip('\n') }}
+            {%- else %}
+                {{- '<|im_start|>' + message.role + '\n' + content }}
+            {%- endif %}
+        {%- else %}
+            {{- '<|im_start|>' + message.role + '\n' + content }}
+        {%- endif %}
+
+        {%- if message.tool_calls %}
+            {%- for tool_call in message.tool_calls %}
+                {%- if (loop.first and content) or (not loop.first) %}
+                    {{- '\n' }}
+                {%- endif %}
+                {%- if tool_call.function %}
+                    {%- set tool_call = tool_call.function %}
+                {%- endif %}
+                {{- '<tool_call>\n{"name": "' }}
+                {{- tool_call.name }}
+                {{- '", "arguments": ' }}
+                {%- if tool_call.arguments is string %}
+                    {{- tool_call.arguments }}
+                {%- else %}
+                    {{- tool_call.arguments | tojson }}
+                {%- endif %}
+                {{- '}\n</tool_call>' }}
+            {%- endfor %}
+        {%- endif %}
+        {{- '<|im_end|>\n' }}
+    {%- elif message.role == "tool" %}
+        {%- if loop.first or (messages[loop.index0 - 1].role != "tool") %}
+            {{- '<|im_start|>user' }}
+        {%- endif %}
+        {{- '\n<tool_response>\n' }}
+        {{- message.content }}
+        {{- '\n</tool_response>' }}
+        {%- if loop.last or (messages[loop.index0 + 1].role != "tool") %}
+            {{- '<|im_end|>\n' }}
+        {%- endif %}
+    {%- endif %}
+{%- endfor %}
+
+{%- if add_generation_prompt %}
+    {{- '<|im_start|>assistant\n' }}
+    {%- if enable_thinking is defined and enable_thinking is false %}
+        {{- '<think>\n\n</think>\n\n' }}
+    {%- endif %}
+    {%- if enable_thinking is defined and enable_thinking is true %}
+        {{- '<think>\n' }}
+    {%- endif %}
+{%- endif %}

vllm/transformers_utils/config_parser_base.py

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from abc import ABC, abstractmethod
+from pathlib import Path
+from typing import Optional, Union
+
+from transformers import PretrainedConfig
+
+
+class ConfigParserBase(ABC):
+
+    @abstractmethod
+    def parse(self,
+              model: Union[str, Path],
+              trust_remote_code: bool,
+              revision: Optional[str] = None,
+              code_revision: Optional[str] = None,
+              **kwargs) -> tuple[dict, PretrainedConfig]:
+        raise NotImplementedError

vllm/transformers_utils/configs/__init__.py

@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""
+Model configs may be defined in this directory for the following reasons:
+
+- There is no configuration file defined by HF Hub or Transformers library.
+- There is a need to override the existing config to support vLLM.
+"""
+
+from vllm.transformers_utils.configs.chatglm import ChatGLMConfig
+from vllm.transformers_utils.configs.deepseek_v3 import DeepseekV3Config
+from vllm.transformers_utils.configs.deepseek_vl2 import DeepseekVLV2Config
+from vllm.transformers_utils.configs.dotsocr import DotsOCRConfig
+from vllm.transformers_utils.configs.eagle import EAGLEConfig
+# RWConfig is for the original tiiuae/falcon-40b(-instruct) and
+# tiiuae/falcon-7b(-instruct) models. Newer Falcon models will use the
+# `FalconConfig` class from the official HuggingFace transformers library.
+from vllm.transformers_utils.configs.falcon import RWConfig
+from vllm.transformers_utils.configs.jais import JAISConfig
+from vllm.transformers_utils.configs.kimi_vl import KimiVLConfig
+from vllm.transformers_utils.configs.medusa import MedusaConfig
+from vllm.transformers_utils.configs.midashenglm import MiDashengLMConfig
+from vllm.transformers_utils.configs.mlp_speculator import MLPSpeculatorConfig
+from vllm.transformers_utils.configs.moonvit import MoonViTConfig
+from vllm.transformers_utils.configs.nemotron import NemotronConfig
+from vllm.transformers_utils.configs.nemotron_h import NemotronHConfig
+from vllm.transformers_utils.configs.nemotron_vl import Nemotron_Nano_VL_Config
+from vllm.transformers_utils.configs.olmo3 import Olmo3Config
+from vllm.transformers_utils.configs.ovis import OvisConfig
+from vllm.transformers_utils.configs.qwen3_next import Qwen3NextConfig
+from vllm.transformers_utils.configs.radio import RadioConfig
+from vllm.transformers_utils.configs.speculators.base import SpeculatorsConfig
+from vllm.transformers_utils.configs.step3_vl import (Step3TextConfig,
+                                                      Step3VisionEncoderConfig,
+                                                      Step3VLConfig)
+from vllm.transformers_utils.configs.ultravox import UltravoxConfig
+
+__all__ = [
+    "ChatGLMConfig",
+    "DeepseekVLV2Config",
+    "DeepseekV3Config",
+    "DotsOCRConfig",
+    "EAGLEConfig",
+    "RWConfig",
+    "JAISConfig",
+    "MedusaConfig",
+    "MiDashengLMConfig",
+    "MLPSpeculatorConfig",
+    "MoonViTConfig",
+    "KimiVLConfig",
+    "NemotronConfig",
+    "NemotronHConfig",
+    "Nemotron_Nano_VL_Config",
+    "Olmo3Config",
+    "OvisConfig",
+    "RadioConfig",
+    "SpeculatorsConfig",
+    "UltravoxConfig",
+    "Step3VLConfig",
+    "Step3VisionEncoderConfig",
+    "Step3TextConfig",
+    "Qwen3NextConfig",
+]

vllm/transformers_utils/configs/arctic.py

@@ -0,0 +1,207 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# yapf: disable
+# ruff: noqa: E501
+# coding=utf-8
+# Copied from
+# https://huggingface.co/Snowflake/snowflake-arctic-instruct/blob/main/configuration_arctic.py
+""" Arctic model configuration"""
+
+from dataclasses import asdict, dataclass
+from typing import Any
+
+from transformers.configuration_utils import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+ARCTIC_PRETRAINED_CONFIG_ARCHIVE_MAP = {
+    "arctic": "https://huggingface.co/Snowflake/snowflake-arctic-instruct/tree/main/config.json",
+}
+
+
+@dataclass
+class ArcticLoRAConfig:
+    lora_r: int = 64
+    lora_alpha: float = 16
+    shard_base_weights: bool = False
+
+
+@dataclass
+class ArcticQuantizationConfig:
+    q_bits: int = 8
+    rounding: str = "nearest"
+    mantissa_bits: int = 3
+    group_size: int = 128
+
+
+class ArcticConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a [`ArcticModel`]. It is used to instantiate an
+    Arctic model according to the specified arguments, defining the model architecture. Instantiating a configuration
+    with the defaults will yield a similar configuration to that of the #TODO(rsamdani): add what model has the default config..
+
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+
+    Args:
+        vocab_size (`int`, *optional*, defaults to 32000):
+            Vocabulary size of the Arctic model. Defines the number of different tokens that can be represented by the
+            `inputs_ids` passed when calling [`ArcticModel`]
+        hidden_size (`int`, *optional*, defaults to 4096):
+            Dimension of the hidden representations.
+        intermediate_size (`int`, *optional*, defaults to 14336):
+            Dimension of the MLP representations.
+        num_hidden_layers (`int`, *optional*, defaults to 32):
+            Number of hidden layers in the Transformer encoder.
+        num_attention_heads (`int`, *optional*, defaults to 32):
+            Number of attention heads for each attention layer in the Transformer encoder.
+        num_key_value_heads (`int`, *optional*, defaults to 8):
+            This is the number of key_value heads that should be used to implement Grouped Query Attention. If
+            `num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
+            `num_key_value_heads=1 the model will use Multi Query Attention (MQA) otherwise GQA is used. When
+            converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
+            by meanpooling all the original heads within that group. For more details checkout [this
+            paper](https://arxiv.org/pdf/2305.13245.pdf). If it is not specified, will default to `8`.
+        hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
+            The non-linear activation function (function or string) in the decoder.
+        max_position_embeddings (`int`, *optional*, defaults to `4096*32`):
+            The maximum sequence length that this model might ever be used with. Arctic's sliding window attention
+            allows sequence of up to 4096*32 tokens.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
+        rms_norm_eps (`float`, *optional*, defaults to 1e-05):
+            The epsilon used by the rms normalization layers.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values attentions (not used by all models). Only
+            relevant if `config.is_decoder=True`.
+        pad_token_id (`int`, *optional*):
+            The id of the padding token.
+        bos_token_id (`int`, *optional*, defaults to 1):
+            The id of the "beginning-of-sequence" token.
+        eos_token_id (`int`, *optional*, defaults to 2):
+            The id of the "end-of-sequence" token.
+        tie_word_embeddings (`bool`, *optional*, defaults to `False`):
+            Whether the model's input and output word embeddings should be tied.
+        rope_theta (`float`, *optional*, defaults to 1000000.0):
+            The base period of the RoPE embeddings.
+        sliding_window (`int`, *optional*):
+            Sliding window attention window size. If not specified, will default to `4096`.
+        attention_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the attention probabilities.
+        num_experts_per_tok (`int`, *optional*, defaults to 2):
+            The number of experts to root per-token, can be also interpreted as the `top-p` routing
+            parameter
+        num_local_experts (`int`, *optional*, defaults to 8):
+            Number of experts per Sparse MLP layer.
+        router_aux_loss_coef (`float`, *optional*, defaults to 0.001):
+            The aux loss factor for the total loss.
+
+    ```python
+    >>> from transformers import ArcticModel, ArcticConfig
+
+    >>> # Initializing a Arctic 7B style configuration TODO(rsamdani): verify which model does the default configuration correspond to.
+    >>> configuration = ArcticConfig()
+
+    >>> # Initializing a model from the Arctic 7B style configuration
+    >>> model = ArcticModel(configuration)
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```"""
+
+    model_type = "arctic"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=32000,
+        hidden_size=4096,
+        intermediate_size=14336,
+        num_hidden_layers=32,
+        num_attention_heads=32,
+        num_key_value_heads=None,
+        hidden_act="silu",
+        max_position_embeddings=4096,
+        initializer_range=0.02,
+        rms_norm_eps=1e-5,
+        use_cache=True,
+        pad_token_id=None,
+        bos_token_id=1,
+        eos_token_id=2,
+        tie_word_embeddings=False,
+        rope_theta=1e6,
+        sliding_window=None,
+        attention_dropout=0.0,
+        num_experts_per_tok=1,
+        num_local_experts=8,
+        router_aux_loss_coef=0.001,
+        moe_layer_frequency=2,
+        parallel_attn_mlp_res=False,
+        moe_train_capacity_factor=1,
+        moe_eval_capacity_factor=1,
+        enable_expert_tensor_parallelism=False,
+        moe_min_capacity=0,
+        moe_token_dropping=True,
+        quantization=None,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.sliding_window = sliding_window
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.attention_dropout = attention_dropout
+
+        self.num_experts_per_tok = num_experts_per_tok
+        self.num_local_experts = num_local_experts
+        self.router_aux_loss_coef = router_aux_loss_coef
+        self.moe_layer_frequency = moe_layer_frequency
+        self.moe_train_capacity_factor = moe_train_capacity_factor
+        self.moe_eval_capacity_factor = moe_eval_capacity_factor
+        self.enable_expert_tensor_parallelism = enable_expert_tensor_parallelism
+        self.moe_min_capacity = moe_min_capacity
+        self.moe_token_dropping = moe_token_dropping
+        self.parallel_attn_mlp_res = parallel_attn_mlp_res
+        if isinstance(quantization, dict):
+            self.quantization = ArcticQuantizationConfig(**quantization)
+        else:
+            self.quantization = quantization
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+    @classmethod
+    def from_dict(cls, config_dict: dict[str, Any], **kwargs) -> "ArcticConfig":
+        result = super().from_dict(config_dict, **kwargs)
+        config = result[0] if isinstance(result, tuple) else result
+        if isinstance(config.quantization, dict):
+            config.quantization = ArcticQuantizationConfig(**config.quantization)
+        return result
+
+    def to_dict(self) -> dict[str, Any]:
+        ret = super().to_dict()
+        if isinstance(ret["quantization"], ArcticQuantizationConfig):
+            ret["quantization"] = asdict(ret["quantization"])
+        return ret

vllm/transformers_utils/configs/chatglm.py

@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Adapted from
+# https://github.com/zai-org/ChatGLM2-6B
+from transformers import PretrainedConfig
+
+
+class ChatGLMConfig(PretrainedConfig):
+    model_type = "chatglm"
+    attribute_map = {
+        "num_hidden_layers": "num_layers",
+        "n_head_kv": "multi_query_group_num",
+    }
+
+    def __init__(self,
+                 num_layers=28,
+                 padded_vocab_size=65024,
+                 hidden_size=4096,
+                 ffn_hidden_size=13696,
+                 kv_channels=128,
+                 num_attention_heads=32,
+                 seq_length=2048,
+                 hidden_dropout=0.0,
+                 attention_dropout=0.0,
+                 layernorm_epsilon=1e-5,
+                 rmsnorm=True,
+                 apply_residual_connection_post_layernorm=False,
+                 post_layer_norm=True,
+                 add_bias_linear=False,
+                 add_qkv_bias=False,
+                 interleaved_qkv=False,
+                 bias_dropout_fusion=True,
+                 multi_query_attention=False,
+                 multi_query_group_num=1,
+                 apply_query_key_layer_scaling=True,
+                 attention_softmax_in_fp32=True,
+                 fp32_residual_connection=False,
+                 quantization_bit=0,
+                 pre_seq_len=None,
+                 prefix_projection=False,
+                 **kwargs):
+        self.num_layers = num_layers
+        self.vocab_size = padded_vocab_size
+        self.padded_vocab_size = padded_vocab_size
+        self.hidden_size = hidden_size
+        self.ffn_hidden_size = ffn_hidden_size
+        self.kv_channels = kv_channels
+        self.num_attention_heads = num_attention_heads
+        self.seq_length = seq_length
+        # It is to be compatible with long lora.
+        self.max_position_embeddings = seq_length
+        self.hidden_dropout = hidden_dropout
+        self.attention_dropout = attention_dropout
+        self.layernorm_epsilon = layernorm_epsilon
+        self.rmsnorm = rmsnorm
+        self.apply_residual_connection_post_layernorm = (
+            apply_residual_connection_post_layernorm)
+        self.post_layer_norm = post_layer_norm
+        self.add_bias_linear = add_bias_linear
+        self.add_qkv_bias = add_qkv_bias
+        self.bias_dropout_fusion = bias_dropout_fusion
+        self.multi_query_attention = multi_query_attention
+        self.multi_query_group_num = multi_query_group_num
+        self.apply_query_key_layer_scaling = apply_query_key_layer_scaling
+        self.attention_softmax_in_fp32 = attention_softmax_in_fp32
+        self.fp32_residual_connection = fp32_residual_connection
+        self.quantization_bit = quantization_bit
+        self.pre_seq_len = pre_seq_len
+        self.prefix_projection = prefix_projection
+        self.interleaved_qkv = interleaved_qkv
+        super().__init__(**kwargs)

vllm/transformers_utils/configs/deepseek_v3.py

@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from transformers.configuration_utils import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+
+class DeepseekV3Config(PretrainedConfig):
+
+    model_type = "deepseek_v3"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=129280,
+        hidden_size=7168,
+        intermediate_size=18432,
+        moe_intermediate_size=2048,
+        num_hidden_layers=61,
+        num_nextn_predict_layers=1,
+        num_attention_heads=128,
+        num_key_value_heads=128,
+        n_shared_experts=1,
+        n_routed_experts=256,
+        ep_size=1,
+        routed_scaling_factor=2.5,
+        kv_lora_rank=512,
+        q_lora_rank=1536,
+        qk_rope_head_dim=64,
+        v_head_dim=128,
+        qk_nope_head_dim=128,
+        topk_method='noaux_tc',
+        n_group=8,
+        topk_group=4,
+        num_experts_per_tok=8,
+        moe_layer_freq=1,
+        first_k_dense_replace=3,
+        norm_topk_prob=True,
+        scoring_func='sigmoid',
+        hidden_act="silu",
+        max_position_embeddings=4096,
+        initializer_range=0.02,
+        rms_norm_eps=1e-6,
+        use_cache=True,
+        pad_token_id=None,
+        bos_token_id=0,
+        eos_token_id=1,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        attention_bias=False,
+        attention_dropout=0.0,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.moe_intermediate_size = moe_intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_nextn_predict_layers = num_nextn_predict_layers
+        self.num_attention_heads = num_attention_heads
+        self.n_shared_experts = n_shared_experts
+        self.n_routed_experts = n_routed_experts
+        self.ep_size = ep_size
+        self.routed_scaling_factor = routed_scaling_factor
+        self.kv_lora_rank = kv_lora_rank
+        self.q_lora_rank = q_lora_rank
+        self.qk_rope_head_dim = qk_rope_head_dim
+        self.v_head_dim = v_head_dim
+        self.qk_nope_head_dim = qk_nope_head_dim
+        self.topk_method = topk_method
+        self.n_group = n_group
+        self.topk_group = topk_group
+        self.num_experts_per_tok = num_experts_per_tok
+        self.moe_layer_freq = moe_layer_freq
+        self.first_k_dense_replace = first_k_dense_replace
+        self.norm_topk_prob = norm_topk_prob
+        self.scoring_func = scoring_func
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.attention_bias = attention_bias
+        self.attention_dropout = attention_dropout
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )

vllm/transformers_utils/configs/deepseek_vl2.py

@@ -0,0 +1,216 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# adapted from https://github.com/deepseek-ai/DeepSeek-VL2/blob/faf18023f24b962b32d9f0a2d89e402a8d383a78/deepseek_vl2/models/modeling_deepseek_vl_v2.py#L115-L268
+
+from transformers.configuration_utils import PretrainedConfig
+
+
+class VisionEncoderConfig(PretrainedConfig):
+    model_type: str = "vision"
+
+    model_name: str = "vit_so400m_patch14_siglip_384.webli"
+    image_size: int = 384
+    patch_size: int = 16
+    width: int = 1024
+    layers: int = 24
+    heads: int = 16
+    mlp_ratio: int = 4
+    global_pool: str = "map"
+    ignore_head: bool = True
+    class_token: bool = False
+    num_classes: int = 0
+    use_checkpoint: bool = False
+    weight_init: str = "skip"
+    deterministic: bool = False
+    num_recomputing_layers: int = 0
+
+    def __init__(self,
+                 model_name: str = "vit_so400m_patch14_siglip_384.webli",
+                 image_size: int = 384,
+                 patch_size: int = 16,
+                 width: int = 1024,
+                 layers: int = 24,
+                 heads: int = 16,
+                 mlp_ratio: int = 4,
+                 global_pool: str = "map",
+                 ignore_head: bool = True,
+                 class_token: bool = False,
+                 num_classes: int = 0,
+                 use_checkpoint: bool = False,
+                 **kwargs):
+        self.model_name = model_name
+        self.image_size = image_size
+        self.patch_size = patch_size
+        self.width = width
+        self.layers = layers
+        self.heads = heads
+        self.mlp_ratio = mlp_ratio
+        self.global_pool = global_pool
+        self.ignore_head = ignore_head
+        self.class_token = class_token
+        self.num_classes = num_classes
+        self.use_checkpoint = use_checkpoint
+
+        super().__init__(**kwargs)
+
+
+class MlpProjectorConfig(PretrainedConfig):
+    model_type = "mlp_projector"
+    projector_type: str = "downsample_mlp_gelu"
+    input_dim: int = 1152
+    n_embed: int = 2048
+    depth: int = 2
+    mlp_ratio: int = 1
+    downsample_ratio: int = 2
+    token_pooling: bool = False
+
+    def __init__(self,
+                 projector_type: str = "downsample_mlp_gelu",
+                 input_dim: int = 1152,
+                 n_embed: int = 2048,
+                 depth: int = 2,
+                 mlp_ratio: int = 1,
+                 downsample_ratio: int = 2,
+                 **kwargs):
+        self.projector_type = projector_type
+        self.input_dim = input_dim
+        self.n_embed = n_embed
+        self.depth = depth
+        self.mlp_ratio = mlp_ratio
+        self.downsample_ratio = downsample_ratio
+
+        super().__init__(**kwargs)
+
+
+class DeepseekV2Config(PretrainedConfig):
+
+    model_type = "deepseek_v2"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=102400,
+        hidden_size=4096,
+        intermediate_size=11008,
+        moe_intermediate_size=1407,
+        num_hidden_layers=30,
+        num_attention_heads=32,
+        num_key_value_heads=32,
+        n_shared_experts=None,
+        n_routed_experts=None,
+        ep_size=1,
+        routed_scaling_factor=1.0,
+        kv_lora_rank=512,
+        q_lora_rank=1536,
+        qk_rope_head_dim=64,
+        v_head_dim=128,
+        qk_nope_head_dim=128,
+        topk_method='gready',
+        n_group=None,
+        topk_group=None,
+        num_experts_per_tok=None,
+        moe_layer_freq=1,
+        first_k_dense_replace=0,
+        norm_topk_prob=False,
+        scoring_func='softmax',
+        aux_loss_alpha=0.001,
+        seq_aux=True,
+        hidden_act="silu",
+        max_position_embeddings=2048,
+        initializer_range=0.02,
+        rms_norm_eps=1e-6,
+        use_cache=True,
+        pad_token_id=None,
+        bos_token_id=100000,
+        eos_token_id=100001,
+        pretraining_tp=1,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        attention_bias=False,
+        attention_dropout=0.0,
+        use_mla=True,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.moe_intermediate_size = moe_intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.n_shared_experts = n_shared_experts
+        self.n_routed_experts = n_routed_experts
+        self.ep_size = ep_size
+        self.routed_scaling_factor = routed_scaling_factor
+        self.kv_lora_rank = kv_lora_rank
+        self.q_lora_rank = q_lora_rank
+        self.qk_rope_head_dim = qk_rope_head_dim
+        self.v_head_dim = v_head_dim
+        self.qk_nope_head_dim = qk_nope_head_dim
+        self.topk_method = topk_method
+        self.n_group = n_group
+        self.topk_group = topk_group
+        self.num_experts_per_tok = num_experts_per_tok
+        self.moe_layer_freq = moe_layer_freq
+        self.first_k_dense_replace = first_k_dense_replace
+        self.norm_topk_prob = norm_topk_prob
+        self.scoring_func = scoring_func
+        self.aux_loss_alpha = aux_loss_alpha
+        self.seq_aux = seq_aux
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = float(rms_norm_eps)
+        self.pretraining_tp = pretraining_tp
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.attention_bias = attention_bias
+        self.attention_dropout = attention_dropout
+        self.use_mla = use_mla
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+
+class DeepseekVLV2Config(PretrainedConfig):
+    model_type = "deepseek_vl_v2"
+    vision_config: VisionEncoderConfig
+    projector_config: MlpProjectorConfig
+
+    tile_tag: str = "2D"
+    global_view_pos: str = "head"
+    candidate_resolutions: tuple[tuple[int, int]] = ((384, 384), )
+
+    def __init__(self,
+                 tile_tag: str = "tile_tag",
+                 global_view_pos: str = "head",
+                 candidate_resolutions: tuple[tuple[int,
+                                                    int]] = ((384, 384), ),
+                 **kwargs):
+        super().__init__(**kwargs)
+
+        vision_config = kwargs.get("vision_config", {})
+        self.vision_config = VisionEncoderConfig(**vision_config)
+
+        projector_config = kwargs.get("projector_config", {})
+        self.projector_config = MlpProjectorConfig(**projector_config)
+
+        language_config = kwargs.get("language_config", {})
+        self.text_config = DeepseekV2Config(**language_config)
+
+        self.tile_tag = tile_tag
+        self.global_view_pos = global_view_pos
+        self.candidate_resolutions = candidate_resolutions
+        self.vocab_size = self.text_config.vocab_size

vllm/transformers_utils/configs/dotsocr.py

@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from typing import Any, Optional
+
+from transformers.configuration_utils import PretrainedConfig
+from transformers.models.qwen2 import Qwen2Config
+
+
+class DotsVisionConfig(PretrainedConfig):
+    model_type: str = "dots_vit"
+
+    def __init__(
+        self,
+        embed_dim: int = 1536,  # vision encoder embed size
+        hidden_size: int = 1536,  # after merger hidden size
+        intermediate_size: int = 4224,
+        num_hidden_layers: int = 42,
+        num_attention_heads: int = 12,
+        num_channels: int = 3,
+        patch_size: int = 14,
+        spatial_merge_size: int = 2,
+        temporal_patch_size: int = 1,
+        rms_norm_eps: float = 1e-5,
+        use_bias: bool = False,
+        attn_implementation="flash_attention_2",
+        initializer_range=0.02,
+        init_merger_std=0.02,
+        is_causal=False,  # ve causal forward
+        post_norm=True,
+        gradient_checkpointing=False,
+        **kwargs: Any,
+    ):
+        super().__init__(**kwargs)
+        self.embed_dim = embed_dim
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.num_channels = num_channels
+        self.patch_size = patch_size
+        self.spatial_merge_size = spatial_merge_size
+        self.temporal_patch_size = temporal_patch_size
+        self.rms_norm_eps = rms_norm_eps
+        self.use_bias = use_bias
+        self.attn_implementation = attn_implementation
+        self.initializer_range = initializer_range
+        self.init_merger_std = init_merger_std
+        self.is_causal = is_causal
+        self.post_norm = post_norm
+        self.gradient_checkpointing = gradient_checkpointing
+
+
+class DotsOCRConfig(Qwen2Config):
+    model_type = "dots_ocr"
+
+    def __init__(self,
+                 image_token_id=151665,
+                 video_token_id=151656,
+                 vision_config: Optional[dict] = None,
+                 *args,
+                 **kwargs):
+        super().__init__(*args, **kwargs)
+        self.image_token_id = image_token_id
+        self.video_token_id = video_token_id
+        self.vision_config = DotsVisionConfig(**(vision_config or {}))
+
+    def save_pretrained(self, save_directory, **kwargs):
+        self._auto_class = None
+        super().save_pretrained(save_directory, **kwargs)

vllm/transformers_utils/configs/eagle.py

@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import os
+from typing import Optional, Union
+
+from transformers import AutoConfig, PretrainedConfig
+
+from vllm.transformers_utils.configs.deepseek_vl2 import DeepseekV2Config
+
+
+class EAGLEConfig(PretrainedConfig):
+    model_type = "eagle"
+
+    def __init__(self,
+                 model: Union[PretrainedConfig, dict, None] = None,
+                 truncated_vocab_size: Optional[int] = None,
+                 method: Optional[str] = 'eagle',
+                 **kwargs):
+
+        model_config: Union[PretrainedConfig, DeepseekV2Config, None]
+        if isinstance(model, dict):
+            archs = model.get("architectures", [])
+            target_archs = ["DeepseekV2ForCausalLM", "DeepseekV3ForCausalLM"]
+            if any(target_arch in archs for target_arch in target_archs):
+                # AutoConfig does not support DeepSeek MoE models yet
+                model_config = DeepseekV2Config(**model)
+            else:
+                model_config = AutoConfig.for_model(**model)
+        else:
+            model_config = model
+
+        for k, v in kwargs.items():
+            if k != "architectures" and k != "model_type" and hasattr(
+                    model_config, k):
+                setattr(model_config, k, v)
+
+        self.model = model_config
+
+        if self.model is None:
+            self.truncated_vocab_size = None
+        else:
+            self.truncated_vocab_size = self.model.vocab_size if \
+                truncated_vocab_size is None else truncated_vocab_size
+
+        # Eagle model name should follow naming convention of
+        # LlamaForCausalLM -> EagleLlamaForCausalLM
+        # LlamaForCausalLM -> Eagle3LlamaForCausalLM
+        # LlamaForCausalLMEagle3 -> LlamaForCausalLMEagle3
+        if method == "eagle":
+            assert self.model is not None, \
+                "model should not be None when method is eagle"
+            kwargs["architectures"] = [
+                f"Eagle{arch}" if not arch.startswith("Eagle") \
+                    else arch for arch in self.model.architectures
+            ]
+
+        elif method == "eagle3":
+            assert self.model is not None, \
+                "model should not be None when method is eagle3"
+            kwargs["architectures"] = [
+                arch if arch.startswith("Eagle3") or arch.endswith("Eagle3")
+                else f"Eagle3{arch}" for arch in self.model.architectures
+            ]
+        else:
+            raise ValueError(f"Invalid method {method}. "
+                             "Supported methods are eagle and eagle3.")
+
+        super().__init__(**kwargs)
+
+        if self.model is not None:
+            for k, v in self.model.to_dict().items():
+                if k not in kwargs:
+                    setattr(self, k, v)
+
+    @classmethod
+    def from_pretrained(
+        cls,
+        pretrained_model_name_or_path: Union[str, os.PathLike],
+        **kwargs,
+    ) -> "EAGLEConfig":
+        config_dict, kwargs = cls.get_config_dict(
+            pretrained_model_name_or_path, **kwargs)
+        return cls.from_dict(config_dict, **kwargs)

vllm/transformers_utils/configs/falcon.py

@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Adapted from
+# https://huggingface.co/tiiuae/falcon-7b/blob/main/configuration_RW.py
+# Copyright 2023 The vLLM team.
+# Copyright 2022 the Big Science Workshop and HuggingFace Inc. team.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Falcon configuration"""
+from transformers.configuration_utils import PretrainedConfig
+
+
+class RWConfig(PretrainedConfig):
+    model_type = "falcon"
+    keys_to_ignore_at_inference = ["past_key_values"]
+    attribute_map = {
+        "num_hidden_layers": "n_layer",
+        "num_attention_heads": "n_head",
+        "num_kv_heads": "n_head_kv",
+    }
+
+    def __init__(
+        self,
+        vocab_size=250880,
+        hidden_size=64,
+        n_layer=2,
+        n_head=8,
+        layer_norm_epsilon=1e-5,
+        initializer_range=0.02,
+        use_cache=True,
+        bos_token_id=1,
+        eos_token_id=2,
+        hidden_dropout=0.0,
+        attention_dropout=0.0,
+        multi_query=True,
+        n_head_kv=None,
+        alibi=False,
+        bias=False,
+        parallel_attn=False,
+        new_decoder_architecture=False,
+        **kwargs,
+    ) -> None:
+        self.vocab_size = vocab_size
+        # Backward compatibility with n_embed kwarg
+        n_embed = kwargs.pop("n_embed", None)
+        self.hidden_size = hidden_size if n_embed is None else n_embed
+        self.n_layer = n_layer
+        self.n_head = n_head
+        self.layer_norm_epsilon = layer_norm_epsilon
+        self.initializer_range = initializer_range
+        self.use_cache = use_cache
+        self.hidden_dropout = hidden_dropout
+        self.attention_dropout = attention_dropout
+
+        self.bos_token_id = bos_token_id
+        self.eos_token_id = eos_token_id
+        self.multi_query = multi_query
+        self.n_head_kv = 1 if n_head_kv is None else n_head_kv
+        self.alibi = alibi
+        self.bias = bias
+        self.parallel_attn = parallel_attn
+        self.new_decoder_architecture = new_decoder_architecture
+
+        if self.hidden_size == 8192:
+            # Hack for falcon-40b
+            self.new_decoder_architecture = True
+
+        super().__init__(bos_token_id=bos_token_id,
+                         eos_token_id=eos_token_id,
+                         **kwargs)
+
+    @property
+    def head_dim(self):
+        return self.hidden_size // self.n_head
+
+    @property
+    def rotary(self):
+        return not self.alibi

vllm/transformers_utils/configs/jais.py

@@ -0,0 +1,237 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Copyright 2023 The OpenAI Team Authors and HuggingFace Inc. team.
+# Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+# Copyright 2023 Cerebras Systems.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""JAIS configuration"""
+
+from transformers.configuration_utils import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+
+class JAISConfig(PretrainedConfig):
+    """
+    This is the configuration class to store the configuration of a
+    [`JAISModel`]. It is used to instantiate a JAIS model according to the
+    specified arguments, defining the model architecture.
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used
+    to control the model outputs. Read the documentation from
+    [`PretrainedConfig`] for more information.
+
+
+    Args:
+        vocab_size (`int`, *optional*, defaults to 50257):
+            Vocabulary size of the JAIS model. Defines the number of different
+            tokens that can be represented by the
+            `inputs_ids` passed when calling [`JAISModel`].
+        n_positions (`int`, *optional*, defaults to 1024):
+            The maximum sequence length that this model might ever be used
+            with. Typically set this to something large just in case
+            (e.g., 512 or 1024 or 2048).
+        n_embd (`int`, *optional*, defaults to 768):
+            Dimensionality of the embeddings and hidden states.
+        n_layer (`int`, *optional*, defaults to 12):
+            Number of hidden layers in the Transformer encoder.
+        n_head (`int`, *optional*, defaults to 12):
+            Number of attention heads for each attention layer in the
+            Transformer encoder.
+        n_inner (`int`, *optional*, defaults to None):
+            Dimensionality of the inner feed-forward layers. `None` will set
+            it to 4 times n_embd
+        activation_function (`str`, *optional*, defaults to `"gelu"`):
+            Activation function, to be selected in the list
+            `["relu", "silu", "gelu", "tanh", "gelu_new", "swiglu"]`.
+        resid_pdrop (`float`, *optional*, defaults to 0.1):
+            The dropout probability for all fully connected layers in
+            the embeddings, encoder, and pooler.
+        embd_pdrop (`float`, *optional*, defaults to 0.1):
+            The dropout ratio for the embeddings.
+        attn_pdrop (`float`, *optional*, defaults to 0.1):
+            The dropout ratio for the attention.
+        layer_norm_epsilon (`float`, *optional*, defaults to 1e-5):
+            The epsilon to use in the layer normalization layers.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for
+            initializing all weight matrices.
+        scale_attn_weights (`bool`, *optional*, defaults to `True`):
+            Scale attention weights by dividing by sqrt(hidden_size)..
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values
+            attentions (not used by all models).
+        scale_attn_by_inverse_layer_idx (`bool`, *optional*, default `True`):
+            Whether to additionally scale attention weights 
+            by `1 / layer_idx + 1`.
+        reorder_and_upcast_attn (`bool`, *optional*, defaults to `False`):
+            Whether to scale keys (K) prior to computing attention
+            (dot-product)
+            and upcast attention dot-product/softmax to float() when training
+            with mixed precision.
+        position_embedding_type (`str`, *optional*, defaults to `"learned"`):
+            Positional embedding can be either `"alibi"` or `"learned"`.
+        mup_width_scale (`float`, *optional*, defaults to 1.0):
+            muP parameter to scale learning rate and initializers. Calculated
+            as (`d_model,0 / d_model`), where
+            `d_model` is the model's width and `d_model,0` is the proxy
+            model's width.
+        mup_embeddings_scale (`float`, *optional*, defaults to 1.0):
+            muP parameter to scale token and position embeddings.
+        mup_output_alpha (`float`, *optional*, defaults to 1.0):
+            muP parameter to scale output logits
+            (`output_logits_scale = mup_output_alpha * mup_width_scale`).
+        mup_scale_qk_dot_by_d (`bool`, *optional*, defaults to `False`):
+            Scale attention weights by dividing by hidden_size instead of
+            sqrt(hidden_size). Need to set scale_attn_weights to `True` as
+            well.
+        alibi_scaling (`dict`, *optional*):
+            Dictionary containing the scaling configuration for ALiBi
+            embeddings. Currently only supports linear
+            scaling strategy. Can specify either the scaling `factor` (must be
+            a float greater than 1) for fixed scaling
+            or `train_seq_len` for dynamic scaling on input samples with
+            sequence length > `train_seq_len`. The expected
+            formats are `{"type": strategy name, "factor": scaling factor}` or
+            `{"type": strategy name,
+            "train_seq_len": training sequence length}`.
+        architectures (`list`, *optional*, defaults to ['JAISLMHeadModel']):
+            architecture names for Jais.
+
+    Example:
+
+    ```python
+    >>> from transformers import JAISConfig, JAISModel
+
+    >>> # Initializing a JAIS configuration
+    >>> configuration = JAISConfig()
+
+    >>> # Initializing a model (with random weights) from the configuration
+    >>> model = JAISModel(configuration)
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```"""
+
+    model_type = "jais"
+    keys_to_ignore_at_inference = ["past_key_values"]
+    attribute_map = {
+        "hidden_size": "n_embd",
+        "max_position_embeddings": "n_positions",
+        "num_attention_heads": "n_head",
+        "num_hidden_layers": "n_layer",
+    }
+
+    def __init__(
+        self,
+        vocab_size=50257,
+        n_positions=1024,
+        n_embd=768,
+        n_layer=12,
+        n_head=12,
+        n_inner=None,
+        activation_function="gelu_new",
+        resid_pdrop=0.1,
+        embd_pdrop=0.1,
+        attn_pdrop=0.1,
+        layer_norm_epsilon=1e-5,
+        initializer_range=0.02,
+        scale_attn_weights=True,
+        use_cache=True,
+        bos_token_id=50256,
+        eos_token_id=50256,
+        scale_attn_by_inverse_layer_idx=False,
+        reorder_and_upcast_attn=False,
+        position_embedding_type="learned",
+        mup_width_scale=1.0,
+        mup_embeddings_scale=1.0,
+        mup_output_alpha=1.0,
+        mup_scale_qk_dot_by_d=False,
+        alibi_scaling=None,
+        architectures=None,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.n_positions = n_positions
+        self.n_embd = n_embd
+        self.n_layer = n_layer
+        self.n_head = n_head
+        self.n_inner = n_inner
+        self.activation_function = activation_function
+        self.resid_pdrop = resid_pdrop
+        self.embd_pdrop = embd_pdrop
+        self.attn_pdrop = attn_pdrop
+        self.layer_norm_epsilon = layer_norm_epsilon
+        self.initializer_range = initializer_range
+        self.scale_attn_weights = scale_attn_weights
+        self.use_cache = use_cache
+        self.scale_attn_by_inverse_layer_idx = scale_attn_by_inverse_layer_idx
+        self.reorder_and_upcast_attn = reorder_and_upcast_attn
+
+        self.bos_token_id = bos_token_id
+        self.eos_token_id = eos_token_id
+
+        self.position_embedding_type = position_embedding_type
+        self.mup_width_scale = mup_width_scale
+        self.mup_embeddings_scale = mup_embeddings_scale
+        self.mup_output_alpha = mup_output_alpha
+        self.mup_scale_qk_dot_by_d = mup_scale_qk_dot_by_d
+
+        self.alibi_scaling = alibi_scaling
+        self._alibi_scaling_validation()
+        if architectures is None:
+            architectures = ["JAISLMHeadModel"]
+
+        super().__init__(
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            architectures=architectures,
+            **kwargs,
+        )
+
+    def _alibi_scaling_validation(self):
+        """
+        Validate the `alibi_scaling` configuration.
+        """
+        if self.alibi_scaling is None:
+            return
+
+        if (not isinstance(self.alibi_scaling, dict)
+                or len(self.alibi_scaling) != 2):
+            raise ValueError(
+                "`alibi_scaling` must be a dictionary with two fields, "
+                "`type` and `factor` or `type` and `train_seq_len`, "
+                f"got {self.alibi_scaling}")
+        alibi_scaling_type = self.alibi_scaling.get("type", None)
+        alibi_scaling_factor = self.alibi_scaling.get("factor", None)
+        alibi_dynamic_scaling = self.alibi_scaling.get("train_seq_len", None)
+        if alibi_scaling_type is None or alibi_scaling_type != "linear":
+            raise ValueError(f"`alibi_scaling`'s type field must be 'linear', "
+                             f"got {alibi_scaling_type}")
+        if (alibi_scaling_factor is not None
+                and not isinstance(alibi_scaling_factor, float)
+                or (alibi_scaling_factor is not None
+                    and alibi_scaling_factor <= 1.0)):
+            raise ValueError(
+                f"`alibi_scaling`'s factor field must be a float > 1.0, "
+                f"got {alibi_scaling_factor}")
+        if (alibi_dynamic_scaling is not None
+                and not isinstance(alibi_dynamic_scaling, int)
+                or (alibi_dynamic_scaling is not None
+                    and alibi_dynamic_scaling <= 1)):
+            raise ValueError(
+                f"`alibi_scaling`'s `train_seq_len` field must be an "
+                f"integer > 1, got {alibi_dynamic_scaling}")

vllm/transformers_utils/configs/kimi_vl.py

@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# Adapted from https://huggingface.co/moonshotai/Kimi-VL-A3B-Instruct/blob/main/configuration_kimi_vl.py
+from typing import Optional, Union
+
+from transformers.configuration_utils import PretrainedConfig
+
+from vllm.transformers_utils.configs.deepseek_vl2 import DeepseekV2Config
+from vllm.transformers_utils.configs.moonvit import MoonViTConfig
+
+
+class KimiVLConfig(PretrainedConfig):
+    model_type = "kimi_vl"
+
+    def __init__(self,
+                 vision_config: Optional[Union[dict, MoonViTConfig]] = None,
+                 text_config: Optional[Union[dict, DeepseekV2Config]] = None,
+                 ignore_index: int = -100,
+                 media_placeholder_token_id: int = 163605,
+                 pad_token_id: int = 0,
+                 **kwargs):
+        if vision_config is None:
+            vision_config = MoonViTConfig()
+        elif isinstance(vision_config, dict):
+            vision_config = MoonViTConfig(**vision_config)
+        self.vision_config = vision_config
+
+        if text_config is None:
+            text_config = DeepseekV2Config()
+        elif isinstance(text_config, dict):
+            text_config = DeepseekV2Config(**text_config)
+        self.text_config = text_config
+
+        self.ignore_index = ignore_index
+        self.media_placeholder_token_id = media_placeholder_token_id
+
+        super().__init__(pad_token_id=pad_token_id, **kwargs)

vllm/transformers_utils/configs/medusa.py

@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import os
+from typing import Optional, Union
+
+from transformers import PretrainedConfig
+
+
+class MedusaConfig(PretrainedConfig):
+    model_type = "medusa"
+
+    def __init__(self,
+                 hidden_size: int = 4096,
+                 vocab_size: int = 32001,
+                 num_heads: int = 5,
+                 num_hidden_layers: int = 1,
+                 max_paths: int = 64,
+                 topk: int = 10,
+                 truncated_vocab_size: Optional[int] = None,
+                 **kwargs):
+
+        self.hidden_size = hidden_size
+        self.vocab_size = vocab_size
+        self.num_heads = num_heads
+        self.num_hidden_layers = num_hidden_layers
+        self.max_paths = max_paths
+        self.topk = topk
+        self.max_seq_len = int(2**20)
+        self.truncated_vocab_size = vocab_size if truncated_vocab_size is None\
+            else truncated_vocab_size
+        if "architectures" not in kwargs:
+            kwargs["architectures"] = ["MedusaModel"]
+
+        super().__init__(**kwargs)
+
+    @classmethod
+    def from_pretrained(
+        cls,
+        pretrained_model_name_or_path: Union[str, os.PathLike],
+        **kwargs,
+    ) -> "MedusaConfig":
+        config_dict, kwargs = cls.get_config_dict(
+            pretrained_model_name_or_path, **kwargs)
+        for k in list(config_dict.keys()):
+            if 'num' in k:
+                if 'heads' in k:
+                    config_dict["num_heads"] = config_dict.pop(k)
+                elif 'layers' in k:
+                    config_dict["num_hidden_layers"] = config_dict.pop(k)
+        return cls.from_dict(config_dict, **kwargs)
+
+    @property
+    def num_attention_heads(self):
+        return 0
+
+    @property
+    def num_lookahead_tokens(self):
+        return self.num_heads
+
+    @num_lookahead_tokens.setter
+    def num_lookahead_tokens(self, num_lookahead_tokens: int):
+        self.num_heads = num_lookahead_tokens

vllm/transformers_utils/configs/midashenglm.py

@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# Copyright 2025 Horizon team, Xiaomi MiLM Plus.
+# Copyright 2024 The Qwen team.
+# Copyright 2023 The vLLM team.
+# Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
+#
+# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
+# and OPT implementations in this library. It has been modified from its
+# original forms to accommodate minor architectural differences compared
+# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from typing import Optional, Union
+
+from transformers import PretrainedConfig
+from transformers.models.qwen2_5_omni.configuration_qwen2_5_omni import (
+    Qwen2_5OmniTextConfig)
+
+
+class DashengConfig(PretrainedConfig):
+    model_type = "midashenglm_dasheng_encoder"
+
+    def __init__(
+        self,
+        embed_dim: int = 768,
+        outputdim: int = 527,
+        patch_size: Union[int, tuple[int, int]] = 16,
+        patch_stride: Union[int, tuple[int, int]] = 16,
+        input_channels: int = 1,
+        target_length: int = 1012,
+        depth: int = 12,
+        num_heads: int = 12,
+        mlp_ratio: float = 4.0,
+        qkv_bias: bool = True,
+        init_values: Optional[float] = None,
+        drop_rate: float = 0.0,
+        attn_drop_rate: float = 0.0,
+        f_min: float = 0.0,
+        f_max: float = 8000.0,
+        center: bool = True,
+        win_length: int = 512,
+        hop_length: int = 160,
+        sample_rate: int = 16000,
+        n_fft: int = 512,
+        n_mels: int = 64,
+        **kwargs,
+    ):
+        self.embed_dim = embed_dim
+        self.outputdim = outputdim
+        self.patch_size = patch_size
+        self.patch_stride = patch_stride
+        self.input_channels = input_channels
+        self.target_length = target_length
+        self.depth = depth
+        self.num_heads = num_heads
+        self.mlp_ratio = mlp_ratio
+        self.qkv_bias = qkv_bias
+        self.init_values = init_values
+        self.drop_rate = drop_rate
+        self.attn_drop_rate = attn_drop_rate
+        self.f_min = f_min
+        self.f_max = f_max
+        self.center = center
+        self.win_length = win_length
+        self.hop_length = hop_length
+        self.sample_rate = sample_rate
+        self.n_fft = n_fft
+        self.n_mels = n_mels
+        super().__init__(**kwargs)
+
+
+class MiDashengLMConfig(PretrainedConfig):
+    model_type = "midashenglm"
+
+    def __init__(
+        self,
+        audio_encoder_config: Optional[dict] = None,
+        subsample_factor: int = 5,
+        text_config: Optional[dict] = None,
+        audio_token_id: Optional[int] = None,
+        **kwargs,
+    ):
+        self.audio_encoder_config = DashengConfig(
+            **(audio_encoder_config or {}))
+        self.subsample_factor = subsample_factor
+        self.text_config = (Qwen2_5OmniTextConfig(
+            **text_config) if text_config else Qwen2_5OmniTextConfig())
+        self.text_config.rope_scaling = None  # uses_mrope is false
+        self.audio_token_id = audio_token_id
+        super().__init__(**kwargs)

vllm/transformers_utils/configs/mistral.py

@@ -0,0 +1,165 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from typing import Any
+
+from transformers import PretrainedConfig, WhisperConfig
+
+from vllm.logger import init_logger
+
+logger = init_logger(__name__)
+
+
+def adapt_config_dict(config_dict: dict[str, Any],
+                      **kwargs) -> PretrainedConfig:
+    config_dict.update(kwargs)
+    config_dict = _remap_general_mistral_args(config_dict)
+
+    if bool(config_dict.get("quantization")):
+        config_dict = _remap_mistral_quantization_args(config_dict)
+
+    if bool(config_dict.get("moe")):
+        config_dict["architectures"] = ["MixtralForCausalLM"]
+    else:
+        config_dict["architectures"] = ["MistralForCausalLM"]
+
+    if bool(config_dict.get("yarn")):
+        config_dict = _remap_mistral_yarn_args(config_dict)
+
+    is_vision = ((config_dict.get("multimodal")
+                  or {}).get("vision_encoder_args")
+                 or config_dict.get("vision_encoder"))
+    is_audio = bool(
+        ((config_dict.get("multimodal") or {}).get("whisper_model_args")
+         or {}).get("encoder_args"))
+
+    assert not (is_vision and is_audio), \
+        "Vision and audio are mutually exclusive"
+
+    if is_vision:
+        config_dict = _remap_mistral_vision_args(config_dict)
+    if is_audio:
+        config_dict = _remap_mistral_audio_args(config_dict)
+
+    config = PretrainedConfig.from_dict(config_dict)
+
+    logger.debug("Initialized config %s", config)
+
+    return config
+
+
+def _remap_mistral_vision_args(config: dict) -> dict:
+    if config.get("multimodal"):
+        vision_config = config.pop("multimodal")
+    else:
+        vision_config = config.pop("vision_encoder")
+
+    quant_config = config.get("quantization_config")
+    config = {
+        "model_type": "pixtral",
+        "architectures": ["PixtralForConditionalGeneration"],
+        "text_config": PretrainedConfig.from_dict(config),
+        "vision_config": PretrainedConfig.from_dict(vision_config),
+    }
+    if quant_config:
+        config["quantization_config"] = quant_config
+    return config
+
+
+def _remap_mistral_yarn_args(config: dict) -> dict:
+    # Direct remaps: yarn.X -> rope_scaling.Y
+    # Source keys are from mistral.model.args.YarnArgs
+    _map = {
+        "beta": "beta_fast",
+        "alpha": "beta_slow",
+    }
+    yarn_config = config.get("yarn") or {}
+    renamed_yarn_config = {_map.get(k, k): v for k, v in yarn_config.items()}
+    config["rope_scaling"] = {
+        "rope_type": "yarn",
+        "mscale_all_dim": 1,  # We hardcoded this to 1
+        **renamed_yarn_config
+    }
+    return config
+
+
+def _remap_general_mistral_args(config: dict) -> dict:
+    # Mistral key -> HF key
+    config_mapping = {
+        "dim": "hidden_size",
+        "norm_eps": "rms_norm_eps",
+        "n_kv_heads": "num_key_value_heads",
+        "n_layers": "num_hidden_layers",
+        "n_heads": "num_attention_heads",
+        "hidden_dim": "intermediate_size",
+    }
+    # HF key -> (Mistral key, default value)
+    top_level_mapping_with_default = {
+        "model_type": ("model_type", "transformer"),
+        "hidden_act": ("activation", "silu"),
+        "tie_word_embeddings": ("tied_embeddings", False),
+        "max_seq_len": ("max_seq_len", 128_000),
+        "max_position_embeddings": ("max_position_embeddings", 128_000),
+    }
+
+    for key, new_key in config_mapping.items():
+        if key in config:
+            config[new_key] = config.pop(key)
+
+    for new_key, (key,
+                  default_value) in top_level_mapping_with_default.items():
+        config[new_key] = config.pop(key, default_value)
+
+    return config
+
+
+def _remap_mistral_quantization_args(config: dict) -> dict:
+    quantization = config.get("quantization", {})
+    if quantization.get("qformat_weight") == "fp8_e4m3":
+        # This maps to the FP8 static per-tensor quantization scheme
+        quantization_config = {
+            "quant_method": "fp8",
+            "activation_scheme": "static"
+        }
+    elif quantization.get("quant_method") == "compressed-tensors":
+        # Pass through the quantization config to compressed-tensors
+        quantization_config = quantization
+    else:
+        raise ValueError(
+            f"Found unknown quantization='{quantization}' in config")
+
+    config["quantization_config"] = quantization_config
+
+    return config
+
+
+def _remap_mistral_audio_args(config: dict) -> dict:
+    whisper_args = config["multimodal"].pop("whisper_model_args")
+    encoder_args = whisper_args["encoder_args"]
+    downsample_args = whisper_args["downsample_args"]
+
+    quant_config = config.get("quantization_config")
+    config = {
+        "model_type":
+        "whixtral",
+        "architectures": ["VoxtralForConditionalGeneration"],
+        "text_config":
+        PretrainedConfig.from_dict(config),
+        "audio_config":
+        WhisperConfig(
+            num_mel_bins=encoder_args["audio_encoding_args"]["num_mel_bins"],
+            window_size=encoder_args["audio_encoding_args"]["window_size"],
+            sampling_rate=encoder_args["audio_encoding_args"]["sampling_rate"],
+            hop_length=encoder_args["audio_encoding_args"]["hop_length"],
+            downsample_factor=downsample_args["downsample_factor"],
+            d_model=encoder_args["dim"],
+            encoder_layers=encoder_args["n_layers"],
+            encoder_ffn_dim=encoder_args["hidden_dim"],
+            encoder_attention_heads=encoder_args["n_heads"],
+            vocab_size=encoder_args["vocab_size"],
+            max_source_positions=encoder_args["max_source_positions"],
+            is_encoder_decoder=False,  # Override WhisperConfig default
+        )
+    }
+    if quant_config:
+        config["quantization_config"] = quant_config
+    return config

vllm/transformers_utils/configs/mlp_speculator.py

@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from typing import Optional
+
+from transformers import PretrainedConfig
+
+
+class MLPSpeculatorConfig(PretrainedConfig):
+    model_type = "mlp_speculator"
+
+    attribute_map = {
+        "hidden_size": "emb_dim",
+    }
+
+    def __init__(self,
+                 vocab_size: int = 32000,
+                 emb_dim: int = 4096,
+                 inner_dim: int = 0,
+                 n_predict: int = 3,
+                 top_k_tokens_per_head: Optional[list[int]] = None,
+                 n_candidates: int = 5,
+                 tie_weights: bool = False,
+                 scale_input: bool = False,
+                 **kwargs):
+        """
+        Initialize an MLPSpeculatorConfig
+
+        Args:
+            vocab_size: int
+                the model vocab size
+            emb_dim: int
+                the model embedding dimension
+            inner_dim: int
+                the inner dimension of the model. If 0, will be the emb_dim.
+            n_predict: int
+                the number of lookaheads for the speculator
+            top_k_tokens_per_head: list[int]
+                Number of tokens to consider from each head when forming the
+                candidate tree.
+                For each candidate branch in the tree, head n produces topk[n]
+                additional sub-branches.
+                NOTE: This parameter is currently unused.
+            n_candidates: int
+                number of child candidates to create per sequence
+            tie_weights: bool
+                If true, use a single set of weights for every model
+                head/stage after the first. The initial projection
+                from the base model may have a different size, so that
+                stays separate.
+            scale_input: bool
+                if True, will scale the initial hidden states from
+                the base model.
+        """
+        if top_k_tokens_per_head is None:
+            top_k_tokens_per_head = [5, 4, 3]
+        assert len(top_k_tokens_per_head) == n_predict
+        self.vocab_size = vocab_size
+        self.emb_dim = emb_dim
+        self.inner_dim = inner_dim
+        self.n_predict = n_predict
+        self.top_k_tokens_per_head = top_k_tokens_per_head
+        self.n_candidates = n_candidates
+        self.num_lookahead_tokens = n_predict
+        self.tie_weights = tie_weights
+        self.scale_input = scale_input
+
+        super().__init__(**kwargs)

vllm/transformers_utils/configs/moonvit.py

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# Adapted from https://huggingface.co/moonshotai/Kimi-VL-A3B-Instruct/blob/main/configuration_kimi_vl.py
+from transformers.configuration_utils import PretrainedConfig
+
+
+class MoonViTConfig(PretrainedConfig):
+    model_type = "moonvit"
+
+    def __init__(
+            self,
+            patch_size: int = 14,
+            init_pos_emb_height: int = 64,
+            init_pos_emb_width: int = 64,
+            num_attention_heads: int = 16,
+            num_hidden_layers: int = 27,
+            hidden_size: int = 1152,
+            intermediate_size: int = 4304,
+            merge_kernel_size: tuple[int, int] = (2, 2),
+            **kwargs,
+    ):
+        super().__init__(**kwargs)
+        self.patch_size = patch_size
+        # Positional embedding config
+        self.init_pos_emb_height = init_pos_emb_height
+        self.init_pos_emb_width = init_pos_emb_width
+        # Transformer config
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        # Patch merger config
+        self.merge_kernel_size = merge_kernel_size

vllm/transformers_utils/configs/nemotron.py

@@ -0,0 +1,205 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Copyright 2024 HuggingFace Inc. team. All rights reserved.
+# Copyright (c) 2024, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Nemotron model configuration"""
+
+from transformers import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+
+class NemotronConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a
+    [`NemotronModel`]. It is used to instantiate a Nemotron model
+    according to the specified arguments, defining the model architecture.
+    Instantiating a configuration with the defaults will yield a similar
+    configuration to that of the Nemotron-8B.
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be
+    used to control the model outputs. Read the documentation from
+    [`PretrainedConfig`] for more information.
+
+
+    Args:
+        vocab_size (`int`, *optional*, defaults to 256000):
+            Vocabulary size of the Nemotron model. Defines the number of
+            different tokens that can be represented by the
+            `inputs_ids` passed when calling [`NemotronModel`]
+        hidden_size (`int`, *optional*, defaults to 6144):
+            Dimension of the hidden representations.
+        intermediate_size (`int`, *optional*, defaults to 24576):
+            Dimension of the MLP representations.
+        num_hidden_layers (`int`, *optional*, defaults to 32):
+            Number of hidden layers in the Transformer decoder.
+        num_attention_heads (`int`, *optional*, defaults to 48):
+            Number of attention heads for each attention layer in the
+            Transformer decoder.
+        head_dim (`int`, *optional*):
+            Projection weights dimension in multi-head attention. Set to
+            hidden_size // num_attention_heads if None
+        num_key_value_heads (`int`, *optional*):
+            This is the number of key_value heads that should be used to
+            implement Grouped Query Attention. If
+            `num_key_value_heads=num_attention_heads`, the model will use
+            Multi Head Attention (MHA), if
+            `num_key_value_heads=1 the model will use Multi Query Attention
+            (MQA) otherwise GQA is used. When converting a multi-head
+            checkpoint to a GQA checkpoint, each group key and value
+            head should be constructed by meanpooling all the original
+            heads within that group. For more details checkout 
+            [this paper](https://arxiv.org/pdf/2305.13245.pdf). If it
+            is not specified, will default to `num_attention_heads`.
+        hidden_act (`str` or `function`, *optional*, defaults to `"relu2"`):
+            The non-linear activation function (function or string) in the
+            decoder.
+        max_position_embeddings (`int`, *optional*, defaults to 4096):
+            The maximum sequence length that this model might ever be used
+            with.
+        initializer_range (`float`, *optional*, defaults to 0.0134):
+            The standard deviation of the truncated_normal_initializer for
+            initializing all weight matrices.
+        norm_eps (`float`, *optional*, defaults to 1e-05):
+            The epsilon used by the normalization layers.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values
+            attentions (not used by all models). Only relevant if
+            `config.is_decoder=True`.
+        pad_token_id (`int`, *optional*):
+            Padding token id.
+        bos_token_id (`int`, *optional*, defaults to 2):
+            Beginning of stream token id.
+        eos_token_id (`int`, *optional*, defaults to 3):
+            End of stream token id.
+        tie_word_embeddings (`bool`, *optional*, defaults to `False`):
+            Whether to tie weight embeddings
+        rope_theta (`float`, *optional*, defaults to 10000.0):
+            The base period of the RoPE embeddings.
+        partial_rotary_factor (`float`, *optional*, defaults to 0.5):
+            Percentage of the query and keys which will have rotary embedding.
+        attention_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use a bias in the query, key, value and output
+            projection layers during self-attention.
+        attention_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the attention probabilities.
+        mlp_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use a bias in up_proj and down_proj layers in the MLP
+            layers.
+
+    ```python
+    >>> from transformers import NemotronModel, NemotronConfig
+    >>> # Initializing a Nemotron nemotron-15b style configuration
+    >>> configuration = NemotronConfig()
+    >>> # Initializing a model from the nemotron-15b style configuration
+    >>> model = NemotronModel(configuration)
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```"""
+
+    model_type = "nemotron"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=256000,
+        hidden_size=6144,
+        intermediate_size=24576,
+        num_hidden_layers=32,
+        num_attention_heads=48,
+        head_dim=None,
+        num_key_value_heads=None,
+        hidden_act="relu2",
+        max_position_embeddings=4096,
+        initializer_range=0.0134,
+        norm_eps=1e-5,
+        use_cache=True,
+        pad_token_id=None,
+        bos_token_id=2,
+        eos_token_id=3,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        partial_rotary_factor=0.5,
+        attention_bias=False,
+        attention_dropout=0.0,
+        mlp_bias=False,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        head_dim = head_dim or kwargs.get("kv_channels")
+        self.head_dim = head_dim if head_dim is not None else (
+            hidden_size // num_attention_heads)
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.norm_eps = norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        # for backward compatibility
+        partial_rotary_factor = kwargs.get("rope_percent") or kwargs.get(
+            "rope_percentage") or partial_rotary_factor
+        self.partial_rotary_factor = partial_rotary_factor
+        self._rope_scaling_validation()
+        self.attention_bias = attention_bias
+        self.attention_dropout = attention_dropout
+        self.mlp_bias = mlp_bias
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+    def _rope_scaling_validation(self):
+        """
+        Validate the `rope_scaling` configuration.
+        """
+        if self.rope_scaling is None:
+            return
+
+        if not isinstance(self.rope_scaling, dict) or len(
+                self.rope_scaling) != 2:
+            raise ValueError(
+                "`rope_scaling` must be a dictionary with two fields, "
+                f"`type` and `factor`, got {self.rope_scaling}")
+        rope_scaling_type = self.rope_scaling.get("type", None)
+        rope_scaling_factor = self.rope_scaling.get("factor", None)
+        if rope_scaling_type is None or rope_scaling_type not in [
+                "linear", "dynamic"
+        ]:
+            raise ValueError(
+                "`rope_scaling`'s type field must be one of ['linear', "
+                f"'dynamic'], got {rope_scaling_type}")
+        if rope_scaling_factor is None or not isinstance(
+                rope_scaling_factor, float) or rope_scaling_factor <= 1.0:
+            raise ValueError(
+                "`rope_scaling`'s factor field must be a float > 1, got "
+                f"{rope_scaling_factor}")

vllm/transformers_utils/configs/nemotron_h.py

@@ -0,0 +1,259 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Copyright 2024 HuggingFace Inc. team. All rights reserved.
+# Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""NemotronH model configuration"""
+
+import regex as re
+from transformers.configuration_utils import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+
+class NemotronHConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a
+    [`NemotronHModel`]. It is used to instantiate a NemotronH model according
+    to the specified arguments, defining the model architecture. Instantiating
+    a configuration with the defaults will yield a similar configuration to
+    that of the NemotronH-v0.1 model.
+    Args:
+        vocab_size (`int`, *optional*, defaults to 131072):
+            Vocabulary size of the NemotronH model. Defines the number of
+            different tokens that can be represented by the `inputs_ids`
+            passed when calling [`NemotronHModel`]
+        tie_word_embeddings (`bool`, *optional*, defaults to `False`):
+            Whether the model's input and output word embeddings should be
+            tied. Note that this is only relevant if the model has an output
+            word embedding layer.
+        hidden_size (`int`, *optional*, defaults to 4096):
+            Dimension of the hidden representations.
+        intermediate_size (`int`, *optional*, defaults to 21504):
+            Dimension of the MLP representations.
+        num_hidden_layers (`int`, *optional*, defaults to 52):
+            Number of hidden layers in the Transformer encoder.
+        hybrid_override_pattern (`str`, *optional*, defaults to
+            `"M-M-M-M*-M-M-M-M-M*-M-M-M-M-M*-M-M-M-M-M*-M-M-M-M-M-"`):
+            The pattern of the hybrid model. The pattern is a string of
+            characters where each character represents
+            M: Mamba2, *: Attention, -: MLP
+        num_attention_heads (`int`, *optional*, defaults to 32):
+            Number of attention heads for each attention layer in the
+            Transformer encoder.
+        attention_head_dim (`int`, *optional*, defaults to 128):
+            Dimension of each attention head.
+        num_key_value_heads (`int`, *optional*, defaults to 8):
+            This is the number of key_value heads that should be used to
+            implement Grouped Query Attention. If
+            `num_key_value_heads=num_attention_heads`, the model will use
+            Multi Head Attention (MHA), if `num_key_value_heads=1` the model
+            will use Multi Query Attention (MQA) otherwise GQA is used.
+        mlp_hidden_act (`str`, *optional*, defaults to "relu2"):
+            The non-linear activation function in the MLP layers.
+        attention_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use bias in attention layers.
+        mlp_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use bias in MLP layers.
+        use_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use bias in the model.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for
+            initializing all weight matrices.
+        layer_norm_epsilon (`float`, *optional*, defaults to 1e-5):
+            The epsilon used by the layer normalization layers.
+        residual_in_fp32 (`bool`, *optional*, defaults to `False`):
+            Whether or not residuals should be in `float32`. If set to `False`
+            residuals will keep the same `dtype` as the rest of the model.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values
+            attentions (not used by all models). Only relevant if
+            `config.is_decoder=True`.
+        num_logits_to_keep (`int` or `None`, *optional*, defaults to 1):
+            Number of prompt logits to calculate during generation. If `None`,
+            all logits will be calculated. If an integer value, only last
+            `num_logits_to_keep` logits will be calculated.
+        pad_token_id (`int`, *optional*, defaults to 0):
+            The id of the padding token.
+        bos_token_id (`int`, *optional*, defaults to 1):
+            The id of the "beginning-of-sequence" token.
+        eos_token_id (`int`, *optional*, defaults to 2):
+            The id of the "end-of-sequence" token.
+        sliding_window (`int`, *optional*, defaults to None):
+            Sliding window attention window size.
+        max_position_embeddings (`int`, *optional*, defaults to 4096):
+            The maximum sequence length that this model might ever be used
+            with.
+        attention_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the attention probabilities.
+        hidden_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the hidden states.
+        use_mamba_kernels (`bool`, *optional*, defaults to `True`):
+            Flag indicating whether or not to use the fast mamba kernels.
+            These are available only if `mamba-ssm` and `causal-conv1d`
+            are installed, and the mamba modules are running on a CUDA device.
+        ssm_state_size (`int`, *optional*, defaults to 128):
+            The dimension of the mamba state space latents.
+        mamba_num_heads (`int`, *optional*, defaults to 128):
+            Number of heads in Mamba layers.
+        mamba_n_groups (`int`, *optional*, defaults to 8):
+            Number of groups in Mamba layers.
+        mamba_head_dim (`int`, *optional*, defaults to 64):
+            Dimension of each Mamba head.
+        mamba_d_conv (`int`, *optional*, defaults to 4):
+            The size of the mamba convolution kernel.
+        mamba_expand (`int`, *optional*, defaults to 2):
+            Expanding factor used to determine the mamba intermediate size.
+        mamba_hidden_act (`str`, *optional*, defaults to "silu"):
+            The non-linear activation function in the Mamba layers.
+        mamba_dt_min (`float`, *optional*, defaults to 0.001):
+            Minimum value for the time step in Mamba.
+        mamba_dt_max (`float`, *optional*, defaults to 0.1):
+            Maximum value for the time step in Mamba.
+        mamba_dt_limit (`tuple`, *optional*, defaults to (0.0, float("inf"))):
+            Limits for the time step in Mamba.
+        mamba_dt_init_floor (`float`, *optional*, defaults to 1e-4):
+            Floor value for time step initialization in Mamba.
+        mamba_conv_bias (`bool`, *optional*, defaults to `True`):
+            Whether to use bias in the convolution layer of the mamba mixer
+            block.
+        mamba_proj_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use bias in the input and output projections of the
+            mamba mixer block.
+        mamba_chunk_size (`int`, *optional*, defaults to 256):
+            Size of chunks for Mamba processing.
+        rescale_prenorm_residual (`bool`, *optional*, defaults to `True`):
+            Whether to rescale the pre-normalization residual connections.
+    """
+
+    model_type = "nemotron_h"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=131072,
+        tie_word_embeddings=False,
+        hidden_size=4096,
+        intermediate_size=21504,
+        num_hidden_layers=52,
+        hybrid_override_pattern="M-M-M-M*-M-M-M-M-M*-M-M-M-M-M*-M-M-M-M-M*-M-M-M-M-M-",
+        num_attention_heads=32,
+        head_dim=128,
+        num_key_value_heads=8,  # nemo: num_query_groups
+        mlp_hidden_act="relu2",
+        attention_bias=False,
+        mlp_bias=False,
+        use_bias=False,
+        initializer_range=0.02,  # nemo: init_method_std
+        layer_norm_epsilon=1e-5,  # nemo: layernorm_epsilon
+        residual_in_fp32=False,  #  Megatron Core default value
+        use_cache=True,
+        num_logits_to_keep=1,
+        pad_token_id=0,
+        bos_token_id=1,
+        eos_token_id=2,
+        sliding_window=None,
+        max_position_embeddings=4096,
+        attention_dropout=0.0,
+        hidden_dropout=0.0,  # * ADDED
+        use_mamba_kernels=True,
+        ssm_state_size=128,  # mamba_state_size
+        mamba_num_heads=128,
+        mamba_n_groups=8,  # nemo: mamba_ssm_ngroups = num_heads
+        mamba_head_dim=64,
+        mamba_d_conv=4,
+        mamba_expand=2,
+        mamba_hidden_act="silu",
+        mamba_dt_min=0.001,
+        mamba_dt_max=0.1,
+        mamba_dt_limit=(0.0, float("inf")),
+        mamba_dt_init_floor=1e-4,
+        mamba_conv_bias=True,
+        mamba_proj_bias=False,
+        mamba_chunk_size=256,
+        rescale_prenorm_residual=True,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.tie_word_embeddings = tie_word_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.hybrid_override_pattern = hybrid_override_pattern
+        self.num_attention_heads = num_attention_heads
+        self.head_dim = head_dim
+        self.sliding_window = sliding_window
+        self.max_position_embeddings = max_position_embeddings
+        self.attention_dropout = attention_dropout
+        self.hidden_dropout = hidden_dropout
+
+        # Validate hybrid_override_pattern
+        # M: Mamba2, *: Attention, -: MLP
+        assert len(self.hybrid_override_pattern) == self.num_hidden_layers, (
+            "hybrid_override_pattern must have same length as "
+            "num_hidden_layers")
+        assert re.match(r"^[*-M]+$", self.hybrid_override_pattern), (
+            "hybrid_override_pattern must only contain characters "
+            "'M', '*', or '-'")
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.mlp_hidden_act = mlp_hidden_act
+        self.attention_bias = attention_bias
+        self.mlp_bias = mlp_bias
+        self.use_bias = use_bias
+        self.initializer_range = initializer_range
+        self.layer_norm_epsilon = layer_norm_epsilon
+        self.residual_in_fp32 = residual_in_fp32
+
+        self.use_cache = use_cache
+        self.num_logits_to_keep = num_logits_to_keep
+
+        self.use_mamba_kernels = use_mamba_kernels
+        self.n_groups = mamba_n_groups
+        self.mamba_head_dim = mamba_head_dim
+        self.ssm_state_size = ssm_state_size
+        self.mamba_num_heads = mamba_num_heads
+        self.conv_kernel = mamba_d_conv
+        self.expand = mamba_expand
+        self.mamba_hidden_act = mamba_hidden_act
+        self.time_step_min = mamba_dt_min
+        self.time_step_max = mamba_dt_max
+        self.time_step_limit = mamba_dt_limit
+        self.time_step_floor = mamba_dt_init_floor
+        self.use_conv_bias = mamba_conv_bias
+        self.mamba_proj_bias = mamba_proj_bias
+        self.chunk_size = mamba_chunk_size
+        self.rescale_prenorm_residual = rescale_prenorm_residual
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+    @property
+    def layers_block_type(self):
+        return [
+            "mamba" if self.hybrid_override_pattern[i] == "M" else
+            "attention" if self.hybrid_override_pattern[i] == "*" else "mlp"
+            for i in range(self.num_hidden_layers)
+        ]

vllm/transformers_utils/configs/nemotron_vl.py

@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# yapf: disable
+# ruff: noqa: E501
+# Adapted from
+# https://huggingface.co/nvidia/Llama-3.1-Nemotron-Nano-VL-8B-V1/blob/main/configuration.py
+# --------------------------------------------------------
+# Adapted from https://huggingface.co/OpenGVLab/InternVL2-Llama3-76B under MIT License
+#     LICENSE is in incl_licenses directory.
+# --------------------------------------------------------
+
+from transformers import LlamaConfig
+from transformers.configuration_utils import PretrainedConfig
+from transformers.dynamic_module_utils import get_class_from_dynamic_module
+
+
+class Nemotron_Nano_VL_Config(PretrainedConfig):
+    model_type = 'Llama_Nemotron_Nano_VL'
+    is_composition = True
+
+    def __init__(
+        self,
+        vision_config=None,
+        llm_config=None,
+        force_image_size=None,
+        downsample_ratio=0.5,
+        template=None,
+        ps_version='v1',
+        image_tag_type="internvl",
+        projector_hidden_size=4096,
+        vit_hidden_size=1280,
+        **kwargs
+    ):
+        super().__init__(**kwargs)
+
+        if vision_config is not None:
+            assert "auto_map" in vision_config and "AutoConfig" in vision_config["auto_map"]
+            vision_auto_config = get_class_from_dynamic_module(*vision_config["auto_map"]["AutoConfig"].split("--")[::-1])
+            self.vision_config = vision_auto_config(**vision_config)
+        else:
+            self.vision_config = PretrainedConfig()
+
+        if llm_config is None:
+            self.text_config = LlamaConfig()
+        else:
+            self.text_config = LlamaConfig(**llm_config)
+
+        # Assign configuration values
+        self.force_image_size = force_image_size
+        self.downsample_ratio = downsample_ratio
+        self.template = template  # TODO move out of here and into the tokenizer
+        self.ps_version = ps_version  # Pixel shuffle version
+        self.image_tag_type = image_tag_type # TODO: into the tokenizer too?
+        self.projector_hidden_size = projector_hidden_size
+        self.vit_hidden_size = vit_hidden_size

vllm/transformers_utils/configs/olmo3.py

@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from transformers.configuration_utils import PretrainedConfig
+
+
+class Olmo3Config(PretrainedConfig):
+
+    model_type = "olmo3"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=50304,
+        hidden_size=4096,
+        intermediate_size=11008,
+        num_hidden_layers=32,
+        num_attention_heads=32,
+        num_key_value_heads=None,
+        hidden_act="silu",
+        max_position_embeddings=2048,
+        initializer_range=0.02,
+        use_cache=True,
+        pad_token_id=1,
+        bos_token_id=None,
+        eos_token_id=50279,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        attention_bias=False,
+        attention_dropout=0.0,
+        rms_norm_eps=1e-5,
+        sliding_window=4096,
+        layer_types=None,
+        **kwargs,
+    ):
+        # This model uses Olmo3ForCausalLM in transformers but Olmo2ForCausalLM
+        # in vLLM.
+        if "architectures" not in kwargs:
+            kwargs["architectures"] = ["Olmo2ForCausalLM"]
+        elif "Olmo3ForCausalLM" in kwargs["architectures"]:
+            kwargs["architectures"].remove("Olmo3ForCausalLM")
+            kwargs["architectures"].append("Olmo2ForCausalLM")
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.attention_bias = attention_bias
+        self.attention_dropout = attention_dropout
+
+        self.rms_norm_eps = rms_norm_eps
+
+        self.sliding_window = sliding_window
+        self.layer_types = layer_types
+        if self.layer_types is None:
+            self.layer_types = [
+                "sliding_attention" if (i + 1) % 4 != 0 else "full_attention"
+                for i in range(self.num_hidden_layers)
+            ]

vllm/transformers_utils/configs/ovis.py

@@ -0,0 +1,176 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# yapf: disable
+# ruff: noqa: E501
+# adapted from https://huggingface.co/AIDC-AI/Ovis2-1B/blob/main/configuration_aimv2.py
+# and https://huggingface.co/AIDC-AI/Ovis2-1B/blob/main/configuration_ovis.py
+# Ovis Config with AimV2 config registration removed for Transformers compatibility
+from typing import Any, Optional, Union
+
+from transformers import AutoConfig, PretrainedConfig
+
+
+class AIMv2Config(PretrainedConfig):
+    """This is the configuration class to store the configuration of an [`AIMv2Model`].
+    Instantiating a configuration with the defaults will yield a similar configuration
+    to that of the [apple/aimv2-large-patch14-224](https://huggingface.co/apple/aimv2-large-patch14-224).
+    Args:
+        hidden_size: Dimension of the hidden representations.
+        intermediate_size: Dimension of the SwiGLU representations.
+        num_hidden_layers: Number of hidden layers in the Transformer.
+        num_attention_heads: Number of attention heads for each attention layer
+            in the Transformer.
+        num_channels: Number of input channels.
+        image_size: Image size.
+        patch_size: Patch size.
+        rms_norm_eps: Epsilon value used for the RMS normalization layer.
+        attention_dropout: Dropout ratio for attention probabilities.
+        projection_dropout: Dropout ratio for the projection layer after the attention.
+        qkv_bias: Whether to add a bias to the queries, keys and values.
+        use_bias: Whether to add a bias in the feed-forward and projection layers.
+        kwargs: Keyword arguments for the [`PretrainedConfig`].
+    """
+
+    model_type: str = "aimv2"
+
+    def __init__(
+        self,
+        hidden_size: int = 1024,
+        intermediate_size: int = 2816,
+        num_hidden_layers: int = 24,
+        num_attention_heads: int = 8,
+        num_channels: int = 3,
+        image_size: int = 224,
+        patch_size: int = 14,
+        rms_norm_eps: float = 1e-5,
+        attention_dropout: float = 0.0,
+        projection_dropout: float = 0.0,
+        qkv_bias: bool = False,
+        use_bias: bool = False,
+        **kwargs: Any,
+    ):
+        super().__init__(**kwargs)
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.num_channels = num_channels
+        self.patch_size = patch_size
+        self.image_size = image_size
+        self.attention_dropout = attention_dropout
+        self.rms_norm_eps = rms_norm_eps
+
+        self.projection_dropout = projection_dropout
+        self.qkv_bias = qkv_bias
+        self.use_bias = use_bias
+
+
+# ----------------------------------------------------------------------
+#                     Visual Tokenizer Configuration
+# ----------------------------------------------------------------------
+class BaseVisualTokenizerConfig(PretrainedConfig):
+
+    def __init__(self,
+                 vocab_size=16384,
+                 tokenize_function="softmax",
+                 tau=1.0,
+                 depths=None,
+                 drop_cls_token=False,
+                 backbone_config: Optional[Union[PretrainedConfig,
+                                                 dict]] = None,
+                 hidden_stride: int = 1,
+                 **kwargs):
+        super().__init__(**kwargs)
+        self.vocab_size = vocab_size
+        self.tokenize_function = tokenize_function
+        self.tau = tau
+        if isinstance(depths, str):
+            depths = [int(x) for x in depths.split('|')]
+        self.depths = depths
+        self.backbone_kwargs = dict[str, Any]()
+        self.drop_cls_token = drop_cls_token
+        if backbone_config is not None:
+            assert isinstance(backbone_config, (PretrainedConfig, dict)), \
+                f"expect `backbone_config` to be instance of PretrainedConfig or dict, but got {type(backbone_config)} type"
+            if not isinstance(backbone_config, PretrainedConfig):
+                model_type = backbone_config['model_type']
+                if model_type != "aimv2":
+                    backbone_config.pop('model_type')
+                    backbone_config = AutoConfig.for_model(model_type, **backbone_config)
+                else:
+                    backbone_config = AIMv2Config(**backbone_config)
+        self.backbone_config = backbone_config
+        self.hidden_stride = hidden_stride
+
+
+class Aimv2VisualTokenizerConfig(BaseVisualTokenizerConfig):
+    model_type = "aimv2_visual_tokenizer"
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        if self.drop_cls_token:
+            self.drop_cls_token = False
+        if self.depths:
+            assert len(self.depths) == 1
+            self.backbone_kwargs['num_hidden_layers'] = self.depths[0]
+
+
+class SiglipVisualTokenizerConfig(BaseVisualTokenizerConfig):
+    model_type = "siglip_visual_tokenizer"
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        if self.drop_cls_token:
+            self.drop_cls_token = False
+        if self.depths:
+            assert len(self.depths) == 1
+            self.backbone_kwargs['num_hidden_layers'] = self.depths[0]
+
+
+AutoConfig.register("siglip_visual_tokenizer", SiglipVisualTokenizerConfig)
+AutoConfig.register("aimv2_visual_tokenizer", Aimv2VisualTokenizerConfig)
+
+
+# ----------------------------------------------------------------------
+#                           Ovis Configuration
+# ----------------------------------------------------------------------
+class OvisConfig(PretrainedConfig):
+    model_type = "ovis"
+
+    def __init__(self,
+                 llm_config: Optional[Union[PretrainedConfig, dict]] = None,
+                 visual_tokenizer_config: Optional[Union[PretrainedConfig,
+                                                         dict]] = None,
+                 multimodal_max_length=8192,
+                 hidden_size=None,
+                 conversation_formatter_class=None,
+                 llm_attn_implementation=None,
+                 disable_tie_weight=False,
+                 **kwargs):
+        super().__init__(**kwargs)
+        if llm_config is not None:
+            assert isinstance(llm_config, (PretrainedConfig, dict)), \
+                f"expect `llm_config` to be instance of PretrainedConfig or dict, but got {type(llm_config)} type"
+            if not isinstance(llm_config, PretrainedConfig):
+                model_type = llm_config['model_type']
+                llm_config.pop('model_type')
+                llm_config = AutoConfig.for_model(model_type, **llm_config)
+
+        # map llm_config to text_config
+        self.text_config = llm_config
+        if visual_tokenizer_config is not None:
+            assert isinstance(visual_tokenizer_config, (PretrainedConfig, dict)), \
+                f"expect `visual_tokenizer_config` to be instance of PretrainedConfig or dict, but got {type(visual_tokenizer_config)} type"
+            if not isinstance(visual_tokenizer_config, PretrainedConfig):
+                model_type = visual_tokenizer_config['model_type']
+                visual_tokenizer_config.pop('model_type')
+                visual_tokenizer_config = AutoConfig.for_model(
+                    model_type, **visual_tokenizer_config)
+
+        self.visual_tokenizer_config = visual_tokenizer_config
+        self.multimodal_max_length = multimodal_max_length
+        self.hidden_size = hidden_size
+        self.conversation_formatter_class = conversation_formatter_class
+        self.llm_attn_implementation = llm_attn_implementation
+        self.disable_tie_weight = disable_tie_weight

vllm/transformers_utils/configs/qwen3_next.py

@@ -0,0 +1,275 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# Copyright 2025 The Qwen team, Alibaba Group and the HuggingFace Inc. team.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Qwen3-Next model configuration"""
+
+from transformers.configuration_utils import (PretrainedConfig,
+                                              layer_type_validation)
+from transformers.modeling_rope_utils import rope_config_validation
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+
+class Qwen3NextConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a [`Qwen3NextModel`]. It is used to instantiate a
+    Qwen3-Next model according to the specified arguments, defining the model architecture.
+    Instantiating a configuration with the defaults will yield a similar configuration to that of
+    Qwen3-Next-80B-A3B-Instruct [Qwen/Qwen3-Next-80B-A3B-Instruct](https://huggingface.co/Qwen/Qwen3-Next-80B-A3B-Instruct).
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+
+    Args:
+        vocab_size (`int`, *optional*, defaults to 151936):
+            Vocabulary size of the model. Defines the number of different tokens that can be represented by the
+            `inputs_ids`.
+        hidden_size (`int`, *optional*, defaults to 2048):
+            Dimension of the hidden representations.
+        intermediate_size (`int`, *optional*, defaults to 5632):
+            Dimension of the MLP representations.
+        num_hidden_layers (`int`, *optional*, defaults to 48):
+            Number of hidden layers in the Transformer encoder.
+        num_attention_heads (`int`, *optional*, defaults to 16):
+            Number of attention heads for each attention layer in the Transformer encoder.
+        num_key_value_heads (`int`, *optional*, defaults to 2):
+            This is the number of key_value heads that should be used to implement Grouped Query Attention. If
+            `num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
+            `num_key_value_heads=1` the model will use Multi Query Attention (MQA) otherwise GQA is used. When
+            converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
+            by meanpooling all the original heads within that group. For more details checkout [this
+            paper](https://arxiv.org/pdf/2305.13245.pdf). If it is not specified, will default to `32`.
+        hidden_act (`str`, *optional*, defaults to `"silu"`):
+            The non-linear activation function in the decoder.
+        max_position_embeddings (`int`, *optional*, defaults to 32768):
+            The maximum sequence length that this model might ever be used with.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
+        rms_norm_eps (`float`, *optional*, defaults to 1e-06):
+            The epsilon used by the rms normalization layers.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values attentions (not used by all models). Only
+            relevant if `config.is_decoder=True`.
+        tie_word_embeddings (`bool`, *optional*, defaults to `False`):
+            Whether the model's input and output word embeddings should be tied.
+        rope_theta (`float`, *optional*, defaults to 10000.0):
+            The base period of the RoPE embeddings.
+        rope_scaling (`Dict`, *optional*):
+            Dictionary containing the scaling configuration for the RoPE embeddings. NOTE: if you apply new rope type
+            and you expect the model to work on longer `max_position_embeddings`, we recommend you to update this value
+            accordingly.
+            Expected contents:
+                `rope_type` (`str`):
+                    The sub-variant of RoPE to use. Can be one of ['default', 'linear', 'dynamic', 'yarn', 'longrope',
+                    'llama3'], with 'default' being the original RoPE implementation.
+                `factor` (`float`, *optional*):
+                    Used with all rope types except 'default'. The scaling factor to apply to the RoPE embeddings. In
+                    most scaling types, a `factor` of x will enable the model to handle sequences of length x *
+                    original maximum pre-trained length.
+                `original_max_position_embeddings` (`int`, *optional*):
+                    Used with 'dynamic', 'longrope' and 'llama3'. The original max position embeddings used during
+                    pretraining.
+                `attention_factor` (`float`, *optional*):
+                    Used with 'yarn' and 'longrope'. The scaling factor to be applied on the attention
+                    computation. If unspecified, it defaults to value recommended by the implementation, using the
+                    `factor` field to infer the suggested value.
+                `beta_fast` (`float`, *optional*):
+                    Only used with 'yarn'. Parameter to set the boundary for extrapolation (only) in the linear
+                    ramp function. If unspecified, it defaults to 32.
+                `beta_slow` (`float`, *optional*):
+                    Only used with 'yarn'. Parameter to set the boundary for interpolation (only) in the linear
+                    ramp function. If unspecified, it defaults to 1.
+                `short_factor` (`List[float]`, *optional*):
+                    Only used with 'longrope'. The scaling factor to be applied to short contexts (<
+                    `original_max_position_embeddings`). Must be a list of numbers with the same length as the hidden
+                    size divided by the number of attention heads divided by 2
+                `long_factor` (`List[float]`, *optional*):
+                    Only used with 'longrope'. The scaling factor to be applied to long contexts (<
+                    `original_max_position_embeddings`). Must be a list of numbers with the same length as the hidden
+                    size divided by the number of attention heads divided by 2
+                `low_freq_factor` (`float`, *optional*):
+                    Only used with 'llama3'. Scaling factor applied to low frequency components of the RoPE
+                `high_freq_factor` (`float`, *optional*):
+                    Only used with 'llama3'. Scaling factor applied to high frequency components of the RoPE
+        partial_rotary_factor (`float`, *optional*, defaults to 0.25):
+            Percentage of the query and keys which will have rotary embedding.
+        attention_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use a bias in the query, key, value and output projection layers during self-attention.
+        attention_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the attention probabilities.
+        head_dim (`int`, *optional*, defaults to 256):
+            Projection weights dimension in multi-head attention.
+        linear_conv_kernel_dim (`int`, *optional*, defaults to 4):
+            Kernel size of the convolution used in linear attention layers.
+        linear_key_head_dim (`int`, *optional*, defaults to 128):
+            Dimension of each key head in linear attention.
+        linear_value_head_dim (`int`, *optional*, defaults to 128):
+            Dimension of each value head in linear attention.
+        linear_num_key_heads (`int`, *optional*, defaults to 16):
+            Number of key heads used in linear attention layers.
+        linear_num_value_heads (`int`, *optional*, defaults to 32):
+            Number of value heads used in linear attention layers.
+        decoder_sparse_step (`int`, *optional*, defaults to 1):
+            The frequency of the MoE layer.
+        moe_intermediate_size (`int`, *optional*, defaults to 512):
+            Intermediate size of the routed expert.
+        shared_expert_intermediate_size (`int`, *optional*, defaults to 512):
+            Intermediate size of the shared expert.
+        num_experts_per_tok (`int`, *optional*, defaults to 10):
+            Number of selected experts.
+        num_experts (`int`, *optional*, defaults to 512):
+            Number of routed experts.
+        norm_topk_prob (`bool`, *optional*, defaults to `True`):
+            Whether to normalize the topk probabilities.
+        output_router_logits (`bool`, *optional*, defaults to `False`):
+            Whether or not the router logits should be returned by the model. Enabling this will also
+            allow the model to output the auxiliary loss, including load balancing loss and router z-loss.
+        router_aux_loss_coef (`float`, *optional*, defaults to 0.001):
+            The aux loss factor for the total loss.
+        mlp_only_layers (`list[int]`, *optional*, defaults to `[]`):
+            Indicate which layers use Qwen3NextMLP rather than Qwen3NextSparseMoeBlock
+            The list contains layer index, from 0 to num_layers-1 if we have num_layers layers
+            If `mlp_only_layers` is empty, `decoder_sparse_step` is used to determine the sparsity.
+        layer_types (`list[str]`, *optional*):
+            Types of each layer (attention or linear).
+
+    ```python
+    >>> from transformers import Qwen3NextModel, Qwen3NextConfig
+
+    >>> # Initializing a Qwen3Next style configuration
+    >>> configuration =  Qwen3NextConfig()
+
+    >>> # Initializing a model from the Qwen3-Next-80B-A3B style configuration
+    >>> model = Qwen3NextModel(configuration)
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```
+    """  # noqa: E501
+
+    model_type = "qwen3_next"
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    base_model_tp_plan = {
+        "layers.*.self_attn.q_proj": "colwise",
+        "layers.*.self_attn.k_proj": "colwise",
+        "layers.*.self_attn.v_proj": "colwise",
+        "layers.*.self_attn.o_proj": "rowwise",
+        "layers.*.mlp.experts.*.gate_proj": "colwise",
+        "layers.*.mlp.experts.*.up_proj": "colwise",
+        "layers.*.mlp.experts.*.down_proj": "rowwise",
+        "layers.*.mlp.shared_experts.gate_proj": "colwise",
+        "layers.*.mlp.shared_experts.up_proj": "colwise",
+        "layers.*.mlp.shared_experts.down_proj": "rowwise",
+        "layers.*.mlp.gate_proj": "colwise",
+        "layers.*.mlp.up_proj": "colwise",
+        "layers.*.mlp.down_proj": "rowwise",
+    }
+    base_model_pp_plan = {
+        "embed_tokens": (["input_ids"], ["inputs_embeds"]),
+        "layers": (["hidden_states", "attention_mask"], ["hidden_states"]),
+        "norm": (["hidden_states"], ["hidden_states"]),
+    }
+
+    def __init__(
+        self,
+        vocab_size=151936,
+        hidden_size=2048,
+        intermediate_size=5632,
+        num_hidden_layers=48,
+        num_attention_heads=16,
+        num_key_value_heads=2,
+        hidden_act="silu",
+        max_position_embeddings=32768,
+        initializer_range=0.02,
+        rms_norm_eps=1e-6,
+        use_cache=True,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        partial_rotary_factor=0.25,
+        attention_bias=False,
+        attention_dropout=0.0,
+        head_dim=256,
+        linear_conv_kernel_dim=4,
+        linear_key_head_dim=128,
+        linear_value_head_dim=128,
+        linear_num_key_heads=16,
+        linear_num_value_heads=32,
+        decoder_sparse_step=1,
+        moe_intermediate_size=512,
+        shared_expert_intermediate_size=512,
+        num_experts_per_tok=10,
+        num_experts=512,
+        norm_topk_prob=True,
+        output_router_logits=False,
+        router_aux_loss_coef=0.001,
+        mlp_only_layers=None,
+        layer_types=None,
+        **kwargs,
+    ):
+        if mlp_only_layers is None:
+            mlp_only_layers = []
+        super().__init__(tie_word_embeddings=tie_word_embeddings, **kwargs)
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.partial_rotary_factor = partial_rotary_factor
+        self.attention_bias = attention_bias
+        self.attention_dropout = attention_dropout
+        self.head_dim = head_dim
+        rope_config_validation(self)
+
+        self.layer_types = layer_types
+        if self.layer_types is None:
+            self.layer_types = [
+                "linear_attention" if bool((i + 1) % 4) else "full_attention"
+                for i in range(self.num_hidden_layers)
+            ]
+        layer_type_validation(self.layer_types)
+
+        # linear attention part
+        self.linear_conv_kernel_dim = linear_conv_kernel_dim
+        self.linear_key_head_dim = linear_key_head_dim
+        self.linear_value_head_dim = linear_value_head_dim
+        self.linear_num_key_heads = linear_num_key_heads
+        self.linear_num_value_heads = linear_num_value_heads
+
+        # MoE arguments
+        self.decoder_sparse_step = decoder_sparse_step
+        self.moe_intermediate_size = moe_intermediate_size
+        self.shared_expert_intermediate_size = shared_expert_intermediate_size
+        self.num_experts_per_tok = num_experts_per_tok
+        self.num_experts = num_experts
+        self.norm_topk_prob = norm_topk_prob
+        self.output_router_logits = output_router_logits
+        self.router_aux_loss_coef = router_aux_loss_coef
+        self.mlp_only_layers = mlp_only_layers
+
+
+__all__ = ["Qwen3NextConfig"]

vllm/transformers_utils/configs/radio.py

@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""Radio vision model configuration"""
+
+from typing import Optional, Union
+
+from transformers.configuration_utils import PretrainedConfig
+from transformers.utils import logging
+
+logger = logging.get_logger(__name__)
+
+VIT_TIMM_DIM_BY_NAME: dict[str, tuple[int, int, int, int]] = {
+    "vit_small_patch16_224": (384, 12, 6, 1536),
+    "vit_base_patch16_224": (768, 12, 12, 3072),
+    "vit_large_patch16_224": (1024, 24, 16, 4096),
+    "vit_huge_patch16_224": (1280, 32, 16, 5120),
+}
+
+OPENAI_CLIP_MEAN = (0.48145466, 0.4578275, 0.40821073)
+OPENAI_CLIP_STD = (0.26862954, 0.26130258, 0.27577711)
+
+
+class RadioConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a Radio
+    vision model. It is used to instantiate a Radio model according to the
+    specified arguments, defining the model architecture.
+
+    Args:
+        model_name: Name of the vision transformer model
+            (e.g., "vit_base_patch16_224"). Used to determine architecture
+            dimensions from `VIT_TIMM_DIM_BY_NAME`.
+        image_size: The size (resolution) of each image.
+        patch_size: The size (resolution) of each patch.
+        qkv_bias: Whether to add a bias to the queries, keys and values.
+        qk_normalization: Whether to apply normalization to queries and keys.
+        norm_type: The normalization type to use.
+        layer_norm_eps: The epsilon used by the layer normalization layers.
+        initializer_factor: A factor for initializing all weight matrices.
+        hidden_act: The non-linear activation function in the encoder.
+        max_img_size: Maximum image size for position embeddings.
+        norm_mean: Mean values for image normalization (RGB channels).
+            Defaults to (0.48145466, 0.4578275, 0.40821073)).
+        norm_std: Standard deviation values for image normalization
+            (RGB channels). Defaults to (0.26862954, 0.26130258, 0.27577711)).
+        reg_tokens: Number of register tokens to use.
+    """
+
+    model_type = "radio"
+
+    def __init__(
+        self,
+        model_name: str,
+        image_size: int = 224,
+        patch_size: int = 16,
+        qkv_bias: bool = True,
+        qk_normalization: bool = False,
+        norm_type: str = "layer_norm",
+        layer_norm_eps: float = 1e-6,
+        initializer_factor: float = 1.0,
+        hidden_act: str = "gelu",
+        max_img_size: int = 2048,
+        norm_mean: Union[tuple[float, float, float], list] = OPENAI_CLIP_MEAN,
+        norm_std: Union[tuple[float, float, float], list] = OPENAI_CLIP_STD,
+        reg_tokens: Optional[int] = None,
+        **kwargs,
+    ):
+        self.model_name = model_name
+        (
+            self.hidden_size,
+            self.num_hidden_layers,
+            self.num_attention_heads,
+            self.intermediate_size,
+        ) = VIT_TIMM_DIM_BY_NAME[model_name]
+        self.image_size = image_size
+        self.patch_size = patch_size
+        self.qkv_bias = qkv_bias
+        self.qk_normalization = qk_normalization
+        self.norm_type = norm_type
+        self.layer_norm_eps = layer_norm_eps
+        self.initializer_factor = initializer_factor
+        self.hidden_act = hidden_act
+        self.max_img_size = max_img_size
+        self.norm_mean = list(norm_mean) if isinstance(norm_mean,
+                                                       (tuple,
+                                                        list)) else norm_mean
+        self.norm_std = list(norm_std) if isinstance(norm_std,
+                                                     (tuple,
+                                                      list)) else norm_std
+        self.reg_tokens = reg_tokens
+        super().__init__(**kwargs)

vllm/transformers_utils/configs/speculators/__init__.py

@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project

vllm/transformers_utils/configs/speculators/algos.py

@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+SUPPORTED_SPECULATORS_TYPES = {}
+
+
+def register_speculator(name):
+
+    def decorator(fn):
+        SUPPORTED_SPECULATORS_TYPES[name] = fn
+        return fn
+
+    return decorator
+
+
+@register_speculator("eagle3")
+def update_eagle3(config_dict: dict, vllm_config: dict) -> None:
+    """
+    Apply Eagle-3 specific configuration transformations.
+    
+    Eagle-3 specific fields:
+    - draft_vocab_size: Size of the draft model's vocabulary
+    - target_hidden_size: Hidden size of the target model
+    - norm_before_residual: Whether to apply norm before residual connection
+    """
+
+    vllm_config["draft_vocab_size"] = config_dict.get("draft_vocab_size")
+    if config_dict.get("target_hidden_size") is not None:
+        vllm_config["target_hidden_size"] = config_dict["target_hidden_size"]
+    vllm_config["norm_before_residual"] = config_dict.get(
+        "norm_before_residual", True)
+    vllm_config["architectures"] = ["Eagle3LlamaForCausalLM"]

vllm/transformers_utils/configs/speculators/base.py

@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import os
+from typing import Any, Union
+
+from transformers import PretrainedConfig
+
+from vllm.transformers_utils.configs.speculators.algos import (
+    SUPPORTED_SPECULATORS_TYPES)
+
+__all__ = ["SpeculatorsConfig"]
+
+
+class SpeculatorsConfig(PretrainedConfig):
+    model_type = "speculators"
+
+    @classmethod
+    def from_pretrained(
+        cls,
+        pretrained_model_name_or_path: Union[str, os.PathLike],
+        **kwargs,
+    ) -> "SpeculatorsConfig":
+        """Load speculators Eagle config and convert to vLLM format."""
+        config_dict, _ = cls.get_config_dict(pretrained_model_name_or_path,
+                                             **kwargs)
+
+        vllm_config = cls.extract_vllm_speculative_config(config_dict)
+        return cls(**vllm_config)
+
+    @classmethod
+    def extract_vllm_speculative_config(
+            cls, config_dict: dict[str, Any]) -> dict[str, Any]:
+        speculators_model_type = config_dict.get("speculators_model_type")
+        if speculators_model_type not in SUPPORTED_SPECULATORS_TYPES:
+            raise ValueError(
+                f"Expected one of: {SUPPORTED_SPECULATORS_TYPES}. "
+                "Please ensure you're loading a speculators-format model.")
+
+        # validate fields
+        # TODO: @dsikka - use speculators pydantic model to validate
+        cls.validate_speculators_config(config_dict=config_dict)
+        # Convert from speculators config -> format that can be ingested by vLLM
+        vllm_config = cls.build_vllm_speculative_config(
+            config_dict=config_dict)
+        # Apply anything specific to the supported algorithm
+        algo_updater = SUPPORTED_SPECULATORS_TYPES[speculators_model_type]
+        algo_updater(config_dict=config_dict, vllm_config=vllm_config)
+        return vllm_config
+
+    @classmethod
+    def validate_speculators_config(cls, config_dict: dict[str, Any]) -> None:
+        try:
+            spec_config = config_dict["speculators_config"]
+            methods = spec_config["proposal_methods"]
+            first_method = methods[0]
+            _ = first_method["speculative_tokens"]
+            _ = spec_config["verifier"]["name_or_path"]
+            _ = config_dict["speculators_model_type"]
+        except (KeyError, IndexError, TypeError) as e:
+            raise ValueError("Invalid speculators config structure") from e
+
+        if "transformer_layer_config" not in config_dict:
+            raise ValueError("Must provide transformer_layer_config")
+
+        if not isinstance(config_dict["transformer_layer_config"], dict):
+            raise TypeError(
+                "'transformer_layer_config' must be a dictionary if provided")
+
+    @classmethod
+    def build_vllm_speculative_config(
+            cls, config_dict: dict[str, Any]) -> dict[str, Any]:
+        """
+        Build vLLM-compatible speculative configuration from speculators format.
+
+        This method extracts and transforms speculative configuration from the
+        speculators format into the structure expected by vLLM.
+
+        Args:
+            config_dict: Configuration dictionary in speculators format
+
+        Returns:
+            Dictionary with vLLM-compatible speculative configuration
+        """
+        # Extract speculators configuration
+        spec_config = config_dict["speculators_config"]
+
+        # Currently we only support one proposal method
+        proposal_methods = spec_config.get("proposal_methods")
+        if not proposal_methods:
+            raise ValueError("No proposal methods found in speculators config")
+
+        first_method = proposal_methods[0]
+        num_speculative_tokens = first_method.get("speculative_tokens")
+
+        if num_speculative_tokens is None:
+            raise ValueError(
+                "Missing 'speculative_tokens' in proposal method. "
+                f"Got: {first_method}")
+
+        # Build base vLLM speculative configuration
+        vllm_config = {
+            "method": config_dict.get("speculators_model_type"),
+            "num_speculative_tokens": num_speculative_tokens,
+            "target_model": spec_config.get("verifier")["name_or_path"]
+        }
+
+        # Merge transformer layer configuration if present
+        transformer_config = config_dict.get("transformer_layer_config", {})
+        vllm_config.update(transformer_config)
+
+        return vllm_config

vllm/transformers_utils/configs/step3_vl.py

@@ -0,0 +1,123 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from typing import Any, Optional, Union
+
+from transformers.configuration_utils import PretrainedConfig
+
+
+class Step3VisionEncoderConfig(PretrainedConfig):
+    model_type = "step3_vision_encoder"
+
+    def __init__(
+        self,
+        hidden_size=1792,
+        intermediate_size=3072,
+        output_hidden_size=4096,
+        num_hidden_layers=63,
+        num_attention_heads=16,
+        num_channels=3,
+        image_size=728,
+        patch_size=14,
+        hidden_act="quick_gelu",
+        layer_norm_eps=1e-5,
+        **kwargs,
+    ):
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.output_hidden_size = output_hidden_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.num_channels = num_channels
+        self.patch_size = patch_size
+        self.image_size = image_size
+        self.layer_norm_eps = layer_norm_eps
+        self.hidden_act = hidden_act
+        super().__init__(**kwargs)
+
+
+class Step3TextConfig(PretrainedConfig):
+    model_type = "step3_text"
+    architectures = ["Step3TextForCausalLM"]
+
+    def __init__(
+        self,
+        hidden_size: int = 7168,
+        intermediate_size: int = 18432,
+        num_attention_heads: int = 64,
+        num_attention_groups: int = 1,
+        num_hidden_layers: int = 61,
+        max_seq_len: int = 65536,
+        vocab_size: int = 128815,
+        rms_norm_eps: float = 1e-5,
+        moe_intermediate_size: int = 5120,
+        moe_num_experts: int = 48,
+        moe_top_k: int = 3,
+        rope_theta: float = 500000,
+        rope_scaling: Optional[dict[str, Any]] = None,
+        max_position_embedding: int = 65536,
+        share_expert_dim: int = 5120,
+        share_q_dim: int = 2048,
+        head_dim: int = 256,
+        norm_expert_weight: bool = False,
+        moe_layers_enum: tuple[int,
+                               ...] = (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+                                       15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
+                                       25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+                                       35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
+                                       45, 46, 47, 48, 49, 50, 51, 52, 53, 54,
+                                       55, 56, 57, 58, 59),
+        **kwargs,
+    ) -> None:
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_attention_heads = num_attention_heads
+        self.num_attention_groups = num_attention_groups
+        self.num_hidden_layers = num_hidden_layers
+        self.max_seq_len = max_seq_len
+        self.vocab_size = vocab_size
+        self.rms_norm_eps = rms_norm_eps
+        self.moe_intermediate_size = moe_intermediate_size
+        self.moe_num_experts = moe_num_experts
+        self.moe_top_k = moe_top_k
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.max_position_embedding = max_position_embedding
+        self.share_expert_dim = share_expert_dim
+        self.share_q_dim = share_q_dim
+        self.head_dim = head_dim
+        self.norm_expert_weight = norm_expert_weight
+        self.moe_layers_enum = moe_layers_enum
+
+        super().__init__(**kwargs)
+
+
+class Step3VLConfig(PretrainedConfig):
+    model_type = "step3_vl"
+
+    def __init__(
+        self,
+        vision_config: Optional[Union[dict, Step3VisionEncoderConfig]] = None,
+        text_config: Optional[Union[dict, Step3TextConfig]] = None,
+        understand_projector_stride: int = 1,
+        projector_bias: bool = True,
+        image_token_id: int = 128001,
+        **kwargs,
+    ) -> None:
+        if vision_config is None:
+            vision_config = Step3VisionEncoderConfig()
+        elif isinstance(vision_config, dict):
+            vision_config = Step3VisionEncoderConfig(**vision_config)
+        self.vision_config = vision_config
+
+        if text_config is None:
+            text_config = Step3TextConfig()
+        elif isinstance(text_config, dict):
+            text_config = Step3TextConfig(**text_config)
+        self.text_config = text_config
+
+        self.understand_projector_stride = understand_projector_stride
+        self.projector_bias = projector_bias
+        self.hidden_size = text_config.hidden_size
+        self.image_token_id = image_token_id
+
+        super().__init__(**kwargs)

vllm/transformers_utils/configs/ultravox.py

@@ -0,0 +1,116 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# Adapted from https://github.com/fixie-ai/ultravox/blob/ecd58c4041030bae2ad15aa6bcf04ab43199ea02/ultravox/model/ultravox_config.py
+from typing import Any, Optional
+
+import transformers
+
+
+class UltravoxConfig(transformers.PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a
+    [`UltravoxForConditionalGeneration`]. It is used to instantiate an
+    Ultravox model according to the specified arguments, defining the model
+    architecture.
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to
+    control the model outputs. Read the documentation from [`PretrainedConfig`]
+    for more information.
+
+    Args:
+        audio_config (`Union[AutoConfig, dict]`,  *optional*):
+            Custom audio config or dict.
+        text_config (`Union[AutoConfig, dict]`, *optional*):
+            The config object of the text backbone.
+        audio_model_id (`str`, *optional*):
+            The model ID of the audio backbone.
+        text_model_id (`str`, *optional*):
+            The model ID of the text backbone.
+        ignore_index (`int`, *optional*, defaults to -100):
+            The ignore index for the loss function.
+        audio_token_index (`int`, *optional*, defaults to 32000):
+            The audio token index to encode the audio prompt.
+        stack_factor (`int`, *optional*, defaults to 8):
+            Audio downsampling factor for the multimodal projector.
+        norm_init (`float`, *optional*, defaults to 0.4):
+            The initialization value for the layer normalization.
+        projector_act (`str`, *optional*, defaults to `"swiglu"`):
+            The activation function used by the multimodal projector.
+        projector_ln_mid (`bool`, *optional*, defaults to `False`):
+            Whether to apply layer normalization at the middle of the
+            projector or at the end. Versions v0.4.1 and below
+            use `False`, but v0.5 and above use `True`.
+    """
+    wrapped_model_config: transformers.PretrainedConfig
+    model_type = "ultravox"
+    audio_token = "<|audio|>"
+    is_composition = False
+
+    def __init__(
+        self,
+        audio_config: Optional[dict[str, Any]] = None,
+        text_config: Optional[dict[str, Any]] = None,
+        audio_model_id: Optional[str] = None,
+        text_model_id: Optional[str] = None,
+        ignore_index: int = -100,
+        audio_token_index: int = 32000,
+        hidden_size: int = 4096,
+        stack_factor: int = 8,
+        norm_init: float = 0.4,
+        projector_act: str = "swiglu",
+        projector_ln_mid: bool = False,
+        **kwargs,
+    ):
+        self.ignore_index = ignore_index
+        self.audio_token_index = audio_token_index
+
+        self.hidden_size = hidden_size
+        self.stack_factor = stack_factor
+        self.norm_init = norm_init
+        self.projector_act = projector_act
+        self.projector_ln_mid = projector_ln_mid
+
+        # N.B. May set the wrapped_model_config below.
+        self.text_model_id = text_model_id
+        if text_model_id is None:
+            text_config = text_config or {}
+            self.wrapped_model_config = transformers.CONFIG_MAPPING[
+                text_config.get("model_type", "llama")](**text_config)
+
+        # N.B. May set the audio_config below.
+        self.audio_model_id = audio_model_id
+        if audio_model_id is None:
+            self.audio_model_id = None
+            audio_config = audio_config or {}
+            self.audio_config = transformers.CONFIG_MAPPING[audio_config.get(
+                "model_type", "whisper")](**audio_config)
+
+        super().__init__(**kwargs)
+
+    def __setattr__(self, key, value):
+        # Since --hf-overrides are applied _after_ the UltravoxConfig is
+        # instantiated, load the configs implicitly when assigning text_model_id
+        # or audio_model_id. This allows:
+        #
+        #   --hf-overrides.text_model_id=<quantized variant>
+        #
+        # to behave as intended.
+        if key == "text_model_id" and value is not None:
+            from vllm.transformers_utils.config import get_config
+
+            self.wrapped_model_config = get_config(value,
+                                                   trust_remote_code=False)
+        elif key == "audio_model_id" and value is not None:
+            from vllm.transformers_utils.config import get_config
+
+            self.audio_config = get_config(value, trust_remote_code=False)
+
+        return super().__setattr__(key, value)
+
+    @property
+    def text_config(self) -> transformers.PretrainedConfig:
+        # When Ultravox wraps a multi-modal model (e.g. Gemma), we instantiate
+        # the full model, but the text config is the text config of the inner
+        # model.
+        return self.wrapped_model_config.get_text_config()

vllm/transformers_utils/detokenizer_utils.py

@@ -0,0 +1,199 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from typing import Optional
+
+from .tokenizer import AnyTokenizer
+
+
+def _replace_none_with_empty(tokens: list[Optional[str]]):
+    for i, token in enumerate(tokens):
+        if token is None:
+            tokens[i] = ""
+
+
+def _convert_tokens_to_string_with_added_encoders(
+    tokenizer: AnyTokenizer,
+    output_tokens: list[str],
+    skip_special_tokens: bool,
+    spaces_between_special_tokens: bool,
+) -> str:
+    # Adapted from
+    # https://github.com/huggingface/transformers/blob/v4.28.0/src/transformers/tokenization_utils.py#L921
+    # NOTE(woosuk): The following code is slow because it runs a for loop over
+    # the output_tokens. In Python, running a for loop over a list can be slow
+    # even when the loop body is very simple.
+    # Performance improvements: avoid repeated attribute and function lookups;
+    # localize frequently used objects;
+
+    sub_texts: list[str] = []
+    current_sub_text: list[str] = []
+    convert_tokens_to_string = tokenizer.convert_tokens_to_string
+    added_vocab_set = set(tokenizer.get_added_vocab())
+    all_special_tokens = set(
+        tokenizer.all_special_tokens) if skip_special_tokens else ()
+
+    for token in output_tokens:
+        # Use precomputed set for skip-special check
+        if token in all_special_tokens:
+            continue
+        if token in added_vocab_set:
+            if current_sub_text:
+                sub_texts.append(convert_tokens_to_string(current_sub_text))
+                current_sub_text.clear()
+            sub_texts.append(token)
+        else:
+            current_sub_text.append(token)
+    if current_sub_text:
+        sub_texts.append(convert_tokens_to_string(current_sub_text))
+    if spaces_between_special_tokens:
+        return " ".join(sub_texts)
+    return "".join(sub_texts)
+
+
+# 5 is an arbitrary value that should work for all
+# tokenizers (bigger = more conservative).
+INITIAL_INCREMENTAL_DETOKENIZATION_OFFSET = 5
+
+
+def convert_prompt_ids_to_tokens(
+    tokenizer: AnyTokenizer,
+    prompt_ids: list[int],
+    skip_special_tokens: bool = False,
+) -> tuple[list[str], int, int]:
+    """Converts the prompt ids to tokens and returns the tokens and offsets
+    for incremental detokenization.
+
+    Note that not all tokens are converted to strings. Only the tokens that
+    are necessary for incremental detokenization are converted to strings.
+    """
+    # We do not need to convert the whole prompt to tokens.
+    # Offset a little more in case we have special tokens.
+    new_tokens = tokenizer.convert_ids_to_tokens(
+        prompt_ids[-INITIAL_INCREMENTAL_DETOKENIZATION_OFFSET - 2:],
+        skip_special_tokens=skip_special_tokens)
+    read_offset = len(new_tokens)
+    prefix_offset = max(
+        read_offset - INITIAL_INCREMENTAL_DETOKENIZATION_OFFSET, 0)
+    # This is required to guard against out-of-vocab prompt token ids
+    _replace_none_with_empty(new_tokens)  # type: ignore[arg-type]
+    return new_tokens, prefix_offset, read_offset
+
+
+def convert_ids_list_to_tokens(
+    tokenizer: AnyTokenizer,
+    token_ids: list[int],
+) -> list[str]:
+    """Detokenize the input ids individually.
+
+    Args:
+      tokenizer: tokenizer used by model under test
+      token_ids: convert these tokens (Python list form)
+
+    Returns:
+      Python list of token string representations
+    
+    """
+    token_str_lst = []
+    for token_id in token_ids:
+        # use default skip_special_tokens.
+        token_str = tokenizer.decode([token_id])
+        if token_str is None:
+            token_str = ""
+        token_str_lst.append(token_str)
+    return token_str_lst
+
+
+# Based on
+# https://github.com/huggingface/text-generation-inference/blob/v0.9.4/server/text_generation_server/models/model.py#L62C9-L62C15
+# under Apache 2.0 license
+def detokenize_incrementally(
+    tokenizer: AnyTokenizer,
+    all_input_ids: list[int],
+    prev_tokens: Optional[list[str]],
+    prefix_offset: int,
+    read_offset: int,
+    skip_special_tokens: bool = False,
+    spaces_between_special_tokens: bool = True,
+) -> tuple[list[str], str, int, int]:
+    """Detokenizes the input ids incrementally and returns the new tokens
+    and the new text.
+
+    If `prev_tokens` is None, this function will convert the input ids to
+    tokens and return the tokens and the new text. Otherwise, it will return the
+    new tokens and the new text.
+
+    This function will also return the new prefix offset and the new read
+    offset to be used in the next iteration.
+
+    The offsets are necessary to defeat cleanup algorithms in the decode which
+    decide to add a space or not depending on the surrounding ids.
+
+    Args:
+        tokenizer: The tokenizer to use.
+        all_input_ids: The input ids. The last id is the new token id.
+        prev_tokens: The previous tokens. If None, this function will convert
+            the input ids to tokens and return the tokens and the new text.
+        prefix_offset: The prefix offset.
+        read_offset: The read offset.
+        skip_special_tokens: Whether to skip special tokens.
+        spaces_between_special_tokens: Whether to add spaces between special
+            tokens.
+    """
+    new_token_id = all_input_ids[-1]
+    # This is the first iteration for this sequence
+    is_first_iter = prev_tokens is None
+    if is_first_iter:
+        (prev_tokens, prefix_offset,
+         read_offset) = convert_prompt_ids_to_tokens(
+             tokenizer,
+             all_input_ids[:-1],
+             skip_special_tokens=skip_special_tokens)
+    assert prev_tokens is not None
+
+    # If the new token id is out of bounds, return an empty string.
+    if 0 <= new_token_id < len(tokenizer):
+        # Put new_token_id in a list so skip_special_tokens is respected
+        new_tokens = tokenizer.convert_ids_to_tokens(
+            [new_token_id], skip_special_tokens=skip_special_tokens)
+        if isinstance(new_tokens, str):
+            new_tokens = [new_tokens]
+    else:
+        new_tokens = [""]
+    output_tokens = prev_tokens + new_tokens
+
+    # If this is the first iteration, return all tokens.
+    if is_first_iter:
+        new_tokens = output_tokens
+
+    # The prefix text is necessary only to defeat cleanup algorithms in
+    # the decode which decide to add a space or not depending on the
+    # surrounding ids.
+    if tokenizer.is_fast or not tokenizer.get_added_vocab():
+        prefix_text = tokenizer.convert_tokens_to_string(
+            output_tokens[prefix_offset:read_offset])
+        new_text = tokenizer.convert_tokens_to_string(
+            output_tokens[prefix_offset:])
+    else:
+        prefix_text = _convert_tokens_to_string_with_added_encoders(
+            tokenizer,
+            output_tokens[prefix_offset:read_offset],
+            skip_special_tokens=skip_special_tokens,
+            spaces_between_special_tokens=spaces_between_special_tokens,
+        )
+        new_text = _convert_tokens_to_string_with_added_encoders(
+            tokenizer,
+            output_tokens[prefix_offset:],
+            skip_special_tokens=skip_special_tokens,
+            spaces_between_special_tokens=spaces_between_special_tokens,
+        )
+
+    if len(new_text) <= len(prefix_text) or new_text.endswith("<EFBFBD>"):
+        # utf-8 char at the end means it's a potential unfinished byte sequence
+        # from byte fallback tokenization.
+        # If it's in the middle, it's probably a real invalid id generated
+        # by the model
+        return new_tokens, "", prefix_offset, read_offset
+
+    new_text = new_text[len(prefix_text):]
+    return new_tokens, new_text, read_offset, len(output_tokens)

vllm/transformers_utils/dynamic_module.py

@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import os
+from typing import Optional, Union
+
+from transformers.dynamic_module_utils import get_class_from_dynamic_module
+
+import vllm.envs as envs
+from vllm.logger import init_logger
+
+logger = init_logger(__name__)
+
+
+def try_get_class_from_dynamic_module(
+    class_reference: str,
+    pretrained_model_name_or_path: str,
+    cache_dir: Optional[Union[str, os.PathLike]] = None,
+    force_download: bool = False,
+    resume_download: Optional[bool] = None,
+    proxies: Optional[dict[str, str]] = None,
+    token: Optional[Union[bool, str]] = None,
+    revision: Optional[str] = None,
+    local_files_only: bool = False,
+    repo_type: Optional[str] = None,
+    code_revision: Optional[str] = None,
+    warn_on_fail: bool = True,
+    **kwargs,
+) -> Optional[type]:
+    """
+    As `transformers.dynamic_module_utils.get_class_from_dynamic_module`,
+    but ignoring any errors.
+    """
+    try:
+        return get_class_from_dynamic_module(
+            class_reference,
+            pretrained_model_name_or_path,
+            cache_dir=cache_dir,
+            force_download=force_download,
+            resume_download=resume_download,
+            proxies=proxies,
+            token=token,
+            revision=revision,
+            local_files_only=local_files_only,
+            repo_type=repo_type,
+            code_revision=code_revision,
+            **kwargs,
+        )
+    except Exception:
+        location = "ModelScope" if envs.VLLM_USE_MODELSCOPE else "HF Hub"
+
+        if warn_on_fail:
+            logger.warning(
+                "Unable to load %s from %s on %s.",
+                class_reference,
+                pretrained_model_name_or_path,
+                location,
+                exc_info=True,
+            )
+
+        return None

vllm/transformers_utils/processor.py

@@ -0,0 +1,299 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from functools import lru_cache
+from typing import TYPE_CHECKING, Any, Optional, Union, cast
+
+from transformers import (AutoFeatureExtractor, AutoImageProcessor,
+                          AutoProcessor, AutoVideoProcessor)
+from transformers.feature_extraction_utils import FeatureExtractionMixin
+from transformers.image_processing_utils import BaseImageProcessor
+from transformers.processing_utils import ProcessorMixin
+from transformers.video_processing_utils import BaseVideoProcessor
+from typing_extensions import TypeVar
+
+from vllm.utils import get_allowed_kwarg_only_overrides
+
+if TYPE_CHECKING:
+    from vllm.config import ModelConfig
+
+_P = TypeVar("_P", bound=ProcessorMixin, default=ProcessorMixin)
+_V = TypeVar("_V", bound=BaseVideoProcessor, default=BaseVideoProcessor)
+
+
+class HashableDict(dict):
+    """
+    A dictionary that can be hashed by lru_cache.
+    """
+
+    # NOTE: pythonic dict is not hashable,
+    # we override on it directly for simplicity
+    def __hash__(self) -> int:  # type: ignore[override]
+        return hash(frozenset(self.items()))
+
+
+class HashableList(list):
+    """
+    A list that can be hashed by lru_cache.
+    """
+
+    def __hash__(self) -> int:  # type: ignore[override]
+        return hash(tuple(self))
+
+
+def _get_processor_factory_fn(processor_cls: Union[type, tuple[type, ...]]):
+    if isinstance(processor_cls, tuple) or processor_cls == ProcessorMixin:
+        return AutoProcessor.from_pretrained
+    if hasattr(processor_cls, "from_pretrained"):
+        return processor_cls.from_pretrained
+
+    return processor_cls
+
+
+def _merge_mm_kwargs(
+    model_config: "ModelConfig",
+    processor_cls: Union[type, tuple[type, ...]],
+    /,
+    **kwargs,
+):
+    mm_config = model_config.get_multimodal_config()
+    merged_kwargs = mm_config.merge_mm_processor_kwargs(kwargs)
+
+    factory = _get_processor_factory_fn(processor_cls)
+    allowed_kwargs = get_allowed_kwarg_only_overrides(
+        factory,
+        merged_kwargs,
+        requires_kw_only=False,
+        allow_var_kwargs=True,
+    )
+
+    # NOTE: Pythonic dict is not hashable and will raise unhashable type
+    # error when calling `cached_get_processor`, therefore we need to
+    # wrap it to a hashable dict.
+    for key, value in allowed_kwargs.items():
+        if isinstance(value, dict):
+            allowed_kwargs[key] = HashableDict(value)
+        if isinstance(value, list):
+            allowed_kwargs[key] = HashableList(value)
+
+    return allowed_kwargs
+
+
+def get_processor(
+    processor_name: str,
+    *args: Any,
+    revision: Optional[str] = None,
+    trust_remote_code: bool = False,
+    processor_cls: Union[type[_P], tuple[type[_P], ...]] = ProcessorMixin,
+    **kwargs: Any,
+) -> _P:
+    """Load a processor for the given model name via HuggingFace."""
+    if revision is None:
+        revision = "main"
+
+    try:
+        if isinstance(processor_cls, tuple) or processor_cls == ProcessorMixin:
+            processor = AutoProcessor.from_pretrained(
+                processor_name,
+                *args,
+                revision=revision,
+                trust_remote_code=trust_remote_code,
+                **kwargs,
+            )
+        elif issubclass(processor_cls, ProcessorMixin):
+            processor = processor_cls.from_pretrained(
+                processor_name,
+                *args,
+                revision=revision,
+                trust_remote_code=trust_remote_code,
+                **kwargs,
+            )
+        else:
+            # Processors that are standalone classes unrelated to HF
+            processor = processor_cls(*args, **kwargs)
+    except ValueError as e:
+        # If the error pertains to the processor class not existing or not
+        # currently being imported, suggest using the --trust-remote-code flag.
+        # Unlike AutoTokenizer, AutoProcessor does not separate such errors
+        if not trust_remote_code:
+            err_msg = (
+                "Failed to load the processor. If the processor is "
+                "a custom processor not yet available in the HuggingFace "
+                "transformers library, consider setting "
+                "`trust_remote_code=True` in LLM or using the "
+                "`--trust-remote-code` flag in the CLI.")
+            raise RuntimeError(err_msg) from e
+        else:
+            raise e
+
+    if not isinstance(processor, processor_cls):
+        raise TypeError("Invalid type of HuggingFace processor. "
+                        f"Expected type: {processor_cls}, but "
+                        f"found type: {type(processor)}")
+
+    return processor
+
+
+cached_get_processor = lru_cache(get_processor)
+
+
+def cached_processor_from_config(
+    model_config: "ModelConfig",
+    processor_cls: Union[type[_P], tuple[type[_P], ...]] = ProcessorMixin,
+    **kwargs: Any,
+) -> _P:
+    return cached_get_processor(
+        model_config.model,
+        revision=model_config.revision,
+        trust_remote_code=model_config.trust_remote_code,
+        processor_cls=processor_cls,  # type: ignore[arg-type]
+        **_merge_mm_kwargs(model_config, processor_cls, **kwargs),
+    )
+
+
+def get_feature_extractor(
+    processor_name: str,
+    *args: Any,
+    revision: Optional[str] = None,
+    trust_remote_code: bool = False,
+    **kwargs: Any,
+):
+    """Load an audio feature extractor for the given model name 
+    via HuggingFace."""
+    try:
+        feature_extractor = AutoFeatureExtractor.from_pretrained(
+            processor_name,
+            *args,
+            revision=revision,
+            trust_remote_code=trust_remote_code,
+            **kwargs)
+    except ValueError as e:
+        # If the error pertains to the processor class not existing or not
+        # currently being imported, suggest using the --trust-remote-code flag.
+        # Unlike AutoTokenizer, AutoImageProcessor does not separate such errors
+        if not trust_remote_code:
+            err_msg = (
+                "Failed to load the feature extractor. If the feature "
+                "extractor is a custom extractor not yet available in the "
+                "HuggingFace transformers library, consider setting "
+                "`trust_remote_code=True` in LLM or using the "
+                "`--trust-remote-code` flag in the CLI.")
+            raise RuntimeError(err_msg) from e
+        else:
+            raise e
+    return cast(FeatureExtractionMixin, feature_extractor)
+
+
+cached_get_feature_extractor = lru_cache(get_feature_extractor)
+
+
+def cached_feature_extractor_from_config(
+    model_config: "ModelConfig",
+    **kwargs: Any,
+):
+    return cached_get_feature_extractor(
+        model_config.model,
+        revision=model_config.revision,
+        trust_remote_code=model_config.trust_remote_code,
+        **_merge_mm_kwargs(model_config, AutoFeatureExtractor, **kwargs),
+    )
+
+
+def get_image_processor(
+    processor_name: str,
+    *args: Any,
+    revision: Optional[str] = None,
+    trust_remote_code: bool = False,
+    **kwargs: Any,
+):
+    """Load an image processor for the given model name via HuggingFace."""
+    try:
+        processor = AutoImageProcessor.from_pretrained(
+            processor_name,
+            *args,
+            revision=revision,
+            trust_remote_code=trust_remote_code,
+            **kwargs)
+    except ValueError as e:
+        # If the error pertains to the processor class not existing or not
+        # currently being imported, suggest using the --trust-remote-code flag.
+        # Unlike AutoTokenizer, AutoImageProcessor does not separate such errors
+        if not trust_remote_code:
+            err_msg = (
+                "Failed to load the image processor. If the image processor is "
+                "a custom processor not yet available in the HuggingFace "
+                "transformers library, consider setting "
+                "`trust_remote_code=True` in LLM or using the "
+                "`--trust-remote-code` flag in the CLI.")
+            raise RuntimeError(err_msg) from e
+        else:
+            raise e
+
+    return cast(BaseImageProcessor, processor)
+
+
+cached_get_image_processor = lru_cache(get_image_processor)
+
+
+def cached_image_processor_from_config(
+    model_config: "ModelConfig",
+    **kwargs: Any,
+):
+    return cached_get_image_processor(
+        model_config.model,
+        revision=model_config.revision,
+        trust_remote_code=model_config.trust_remote_code,
+        **_merge_mm_kwargs(model_config, AutoImageProcessor, **kwargs),
+    )
+
+
+def get_video_processor(
+    processor_name: str,
+    *args: Any,
+    revision: Optional[str] = None,
+    trust_remote_code: bool = False,
+    processor_cls_overrides: Optional[type[_V]] = None,
+    **kwargs: Any,
+):
+    """Load a video processor for the given model name via HuggingFace."""
+    try:
+        processor_cls = processor_cls_overrides or AutoVideoProcessor
+        processor = processor_cls.from_pretrained(
+            processor_name,
+            *args,
+            revision=revision,
+            trust_remote_code=trust_remote_code,
+            **kwargs)
+    except ValueError as e:
+        # If the error pertains to the processor class not existing or not
+        # currently being imported, suggest using the --trust-remote-code flag.
+        # Unlike AutoTokenizer, AutoVideoProcessor does not separate such errors
+        if not trust_remote_code:
+            err_msg = (
+                "Failed to load the video processor. If the video processor is "
+                "a custom processor not yet available in the HuggingFace "
+                "transformers library, consider setting "
+                "`trust_remote_code=True` in LLM or using the "
+                "`--trust-remote-code` flag in the CLI.")
+            raise RuntimeError(err_msg) from e
+        else:
+            raise e
+
+    return cast(BaseVideoProcessor, processor)
+
+
+cached_get_video_processor = lru_cache(get_video_processor)
+
+
+def cached_video_processor_from_config(
+    model_config: "ModelConfig",
+    processor_cls: Optional[type[_V]] = None,
+    **kwargs: Any,
+):
+    return cached_get_video_processor(
+        model_config.model,
+        revision=model_config.revision,
+        trust_remote_code=model_config.trust_remote_code,
+        processor_cls_overrides=processor_cls,  # type: ignore[arg-type]
+        **_merge_mm_kwargs(model_config, AutoVideoProcessor, **kwargs),
+    )

vllm/transformers_utils/processors/__init__.py

@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""
+Multi-modal processors may be defined in this directory for the following
+reasons:
+
+- There is no processing file defined by HF Hub or Transformers library.
+- There is a need to override the existing processor to support vLLM.
+"""
+
+from vllm.transformers_utils.processors.deepseek_vl2 import (
+    DeepseekVLV2Processor)
+from vllm.transformers_utils.processors.ovis import OvisProcessor
+from vllm.transformers_utils.processors.ovis2_5 import Ovis2_5Processor
+
+__all__ = ["DeepseekVLV2Processor", "OvisProcessor", "Ovis2_5Processor"]

vllm/transformers_utils/processors/deepseek_vl2.py

@@ -0,0 +1,362 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# yapf: disable
+# ruff: noqa: E501
+# coding=utf-8
+# adapted from https://github.com/deepseek-ai/DeepSeek-VL2/blob/ff23960c5cf9e6874b44be38af930cfb0ccbb620/deepseek_vl2/models/processing_deepseek_vl_v2.py
+# Copyright (c) 2023-2024 DeepSeek.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of
+# this software and associated documentation files (the "Software"), to deal in
+# the Software without restriction, including without limitation the rights to
+# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+# the Software, and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import math
+from typing import Any
+
+import torch
+import torchvision.transforms as T
+from PIL import Image, ImageOps
+from transformers import AutoProcessor, BatchFeature, LlamaTokenizerFast
+from transformers.processing_utils import ProcessorMixin
+
+
+class ImageTransform:
+
+    def __init__(self,
+                 mean: tuple[float, float, float] = (0.5, 0.5, 0.5),
+                 std: tuple[float, float, float] = (0.5, 0.5, 0.5),
+                 normalize: bool = True):
+        self.mean = mean
+        self.std = std
+        self.normalize = normalize
+
+        transform_pipelines = [T.ToTensor()]
+
+        if normalize:
+            transform_pipelines.append(T.Normalize(mean, std))
+
+        self.transform = T.Compose(transform_pipelines)
+
+    def __call__(self, pil_img: Image.Image):
+        x = self.transform(pil_img)
+        return x
+
+
+class DeepseekVLV2Processor(ProcessorMixin):
+    tokenizer_class = ("LlamaTokenizer", "LlamaTokenizerFast")
+    attributes = ["tokenizer"]
+
+    def __init__(
+        self,
+        tokenizer: LlamaTokenizerFast,
+        candidate_resolutions: tuple[tuple[int, int]],
+        patch_size: int,
+        downsample_ratio: int,
+        image_mean: tuple[float, float, float] = (0.5, 0.5, 0.5),
+        image_std: tuple[float, float, float] = (0.5, 0.5, 0.5),
+        normalize: bool = True,
+        image_token: str = "<image>",
+        pad_token: str = "<｜▁pad▁｜>",
+        add_special_token: bool = False,
+        sft_format: str = "deepseek",
+        mask_prompt: bool = True,
+        ignore_id: int = -100,
+        **kwargs,
+    ):
+
+        self.candidate_resolutions = candidate_resolutions
+        self.image_size = candidate_resolutions[0][0]
+        self.patch_size = patch_size
+        self.image_mean = image_mean
+        self.image_std = image_std
+        self.normalize = normalize
+        self.downsample_ratio = downsample_ratio
+
+        self.image_transform = ImageTransform(mean=image_mean, std=image_std, normalize=normalize)
+        self.tokenizer = tokenizer
+        self.tokenizer.padding_side = 'left'  # must set this，padding side with make a difference in batch inference
+
+        # add the pad_token as special token to use 'tokenizer.pad_token' and 'tokenizer.pad_token_id'
+        if tokenizer.pad_token is None:
+            self.tokenizer.add_special_tokens({'pad_token': pad_token})
+
+        # add image token
+        image_token_id = self.tokenizer.vocab.get(image_token)
+        if image_token_id is None:
+            special_tokens = [image_token]
+            special_tokens_dict = {"additional_special_tokens": special_tokens}
+            self.tokenizer.add_special_tokens(special_tokens_dict)
+        self.image_token_id = self.tokenizer.vocab.get(image_token)
+
+        # add five special tokens for grounding-related tasks
+        # <|ref|>, <|/ref|>, <|det|>, <|/det|>, <|grounding|>
+        special_tokens = ['<|ref|>', '<|/ref|>', '<|det|>', '<|/det|>', '<|grounding|>']
+        special_tokens_dict = {"additional_special_tokens": special_tokens}
+        self.tokenizer.add_special_tokens(special_tokens_dict)
+
+        # add special tokens for SFT data
+        special_tokens = ["<|User|>", "<|Assistant|>"]
+        special_tokens_dict = {"additional_special_tokens": special_tokens}
+        self.tokenizer.add_special_tokens(special_tokens_dict)
+
+        self.image_token = image_token
+        self.pad_token = pad_token
+        self.add_special_token = add_special_token
+        self.sft_format = sft_format
+        self.mask_prompt = mask_prompt
+        self.ignore_id = ignore_id
+
+        super().__init__(
+            tokenizer,
+            **kwargs,
+        )
+
+    def select_best_resolution(self, image_size):
+        # used for cropping
+        original_width, original_height = image_size
+        best_fit = None
+        max_effective_resolution = 0
+        min_wasted_resolution = float("inf")
+
+        for width, height in self.candidate_resolutions:
+            scale = min(width / original_width, height / original_height)
+            downscaled_width, downscaled_height = int(
+                original_width * scale), int(original_height * scale)
+            effective_resolution = min(downscaled_width * downscaled_height,
+                                       original_width * original_height)
+            wasted_resolution = (width * height) - effective_resolution
+
+            if effective_resolution > max_effective_resolution or (
+                    effective_resolution == max_effective_resolution
+                    and wasted_resolution < min_wasted_resolution):
+                max_effective_resolution = effective_resolution
+                min_wasted_resolution = wasted_resolution
+                best_fit = (width, height)
+
+        return best_fit
+
+    @property
+    def bos_id(self):
+        return self.tokenizer.bos_token_id
+
+    @property
+    def eos_id(self):
+        return self.tokenizer.eos_token_id
+
+    @property
+    def pad_id(self):
+        return self.tokenizer.pad_token_id
+
+    def encode(self, text: str, bos: bool = True, eos: bool = False):
+        t = self.tokenizer.encode(text, add_special_tokens=False)
+
+        if bos:
+            t = [self.bos_id] + t
+        if eos:
+            t = t + [self.eos_id]
+
+        return t
+
+    def decode(self, t: list[int], **kwargs) -> str:
+        return self.tokenizer.decode(t, **kwargs)
+
+    def process_one(
+        self,
+        prompt: str,
+        images: list[Image.Image],
+        inference_mode: bool = True,
+        **kwargs: Any,
+    ):
+        """
+
+        Args:
+            prompt (str): the formatted prompt;
+            images (list[ImageType]): the list of images;
+            inference_mode (bool): if True, then remove the last eos token;
+            **kwargs: Additional keyword arguments.
+
+        Returns:
+            outputs (BaseProcessorOutput): the output of the processor,
+                - input_ids (torch.LongTensor): [N + image tokens]
+                - target_ids (torch.LongTensor): [N + image tokens]
+                - pixel_values (torch.FloatTensor): [n_patches, 3, H, W]
+                - image_id (int): the id of the image token
+                - num_image_tokens (list[int]): the number of image tokens
+        """
+
+        assert (prompt is not None and images is not None
+                ), "prompt and images must be used at the same time."
+
+        sft_format = prompt
+        tokenized_str, images_list, images_seq_mask, images_spatial_crop, num_image_tokens = self.tokenize_with_images(
+            sft_format, images, bos=True, eos=True, cropping=len(images) <= 2)
+        masked_tokenized_str = []
+        for token_index in tokenized_str:
+            if token_index != self.image_token_id:
+                masked_tokenized_str.append(token_index)
+            else:
+                masked_tokenized_str.append(self.ignore_id)
+
+        assert len(tokenized_str) == len(images_seq_mask) == len(masked_tokenized_str), \
+            (f"tokenized_str's length {len(tokenized_str)}, input_ids' length {len(masked_tokenized_str)}, "
+             f"imags_seq_mask's length {len(images_seq_mask)}, are not equal")
+
+        input_ids = torch.LongTensor(tokenized_str)
+        target_ids = torch.LongTensor(masked_tokenized_str)
+        images_seq_mask = torch.tensor(images_seq_mask, dtype=torch.bool)
+
+        # set input_ids < 0 | input_ids == self.image_token_id as ignore_id
+        target_ids[(input_ids < 0) |
+                   (input_ids == self.image_token_id)] = self.ignore_id
+        input_ids[input_ids < 0] = self.pad_id
+
+        if inference_mode:
+            # Remove the ending eos token
+            assert input_ids[-1] == self.eos_id
+            input_ids = input_ids[:-1]
+            target_ids = target_ids[:-1]
+            images_seq_mask = images_seq_mask[:-1]
+
+        if len(images_list) == 0:
+            pixel_values = torch.zeros((1, 3, self.image_size, self.image_size))
+            images_spatial_crop = torch.zeros((1, 2), dtype=torch.long)
+        else:
+            pixel_values = torch.stack(images_list, dim=0)
+            images_spatial_crop = torch.tensor(images_spatial_crop, dtype=torch.long)
+
+        input_ids = input_ids.unsqueeze(0)
+
+        prepare = BatchFeature(
+            data=dict(
+                input_ids=input_ids,
+                pixel_values=pixel_values,
+                images_seq_mask=images_seq_mask,
+                images_spatial_crop=images_spatial_crop,
+                num_image_tokens=num_image_tokens,
+            ),
+            tensor_type="pt",
+        )
+        return prepare
+
+    def __call__(
+        self,
+        *,
+        text: str,
+        images: list[Image.Image],
+        inference_mode: bool = True,
+        **kwargs: Any,
+    ):
+        """
+
+        Args:
+            text (str): the formatted prompt;
+            images (list[ImageType]): the list of images;
+            inference_mode (bool): if True, then remove the last eos token;
+            **kwargs:
+
+        Returns:
+            outputs (BaseProcessorOutput): the output of the processor,
+                - input_ids (torch.LongTensor): [N + image tokens]
+                - images (torch.FloatTensor): [n_images, 3, H, W]
+                - image_id (int): the id of the image token
+                - num_image_tokens (list[int]): the number of image tokens
+        """
+
+        prepare = self.process_one(
+            prompt=text,
+            images=images,
+            inference_mode=inference_mode,
+        )
+
+        return prepare
+
+    def tokenize_with_images(
+        self,
+        conversation: str,
+        images: list[Image.Image],
+        bos: bool = True,
+        eos: bool = True,
+        cropping: bool = True,
+    ):
+        """Tokenize text with <image> tags."""
+        assert conversation.count(self.image_token) == len(images)
+        text_splits = conversation.split(self.image_token)
+        images_list, images_seq_mask, images_spatial_crop = [], [], []
+        num_image_tokens = []
+        tokenized_str = []
+        for text_sep, image in zip(text_splits, images):
+            """encode text_sep"""
+            tokenized_sep = self.encode(text_sep, bos=False, eos=False)
+            tokenized_str += tokenized_sep
+            images_seq_mask += [False] * len(tokenized_sep)
+
+            """select best resolution for anyres"""
+            if cropping:
+                best_width, best_height = self.select_best_resolution(image.size)
+            else:
+                best_width, best_height = self.image_size, self.image_size
+
+            """process the global view"""
+            global_view = ImageOps.pad(image, (self.image_size, self.image_size),
+                                       color=tuple(int(x * 255) for x in self.image_transform.mean))
+            images_list.append(self.image_transform(global_view))
+
+            """process the local views"""
+            local_view = ImageOps.pad(image, (best_width, best_height),
+                                      color=tuple(int(x * 255) for x in self.image_transform.mean))
+            for i in range(0, best_height, self.image_size):
+                for j in range(0, best_width, self.image_size):
+                    images_list.append(
+                        self.image_transform(local_view.crop((j, i, j + self.image_size, i + self.image_size))))
+
+            """record height / width crop num"""
+            num_width_tiles, num_height_tiles = best_width // self.image_size, best_height // self.image_size
+            images_spatial_crop.append([num_width_tiles, num_height_tiles])
+
+            """add image tokens"""
+            h = w = math.ceil((self.image_size // self.patch_size) / self.downsample_ratio)
+            # global views tokens h * (w + 1), 1 is for line separator
+            tokenized_image = [self.image_token_id] * h * (w + 1)
+            # add a separator between global and local views
+            tokenized_image += [self.image_token_id]
+            # local views tokens, (num_height_tiles * h) * (num_width_tiles * w + 1)
+            tokenized_image += [self.image_token_id] * (num_height_tiles * h) * (num_width_tiles * w + 1)
+
+            tokenized_str += tokenized_image
+            images_seq_mask += [True] * len(tokenized_image)
+            num_image_tokens.append(len(tokenized_image))
+
+        """process the last text split"""
+        tokenized_sep = self.encode(text_splits[-1], bos=False, eos=False)
+        tokenized_str += tokenized_sep
+        images_seq_mask += [False] * len(tokenized_sep)
+
+        """add the bos and eos tokens"""
+        if bos:
+            tokenized_str = [self.bos_id] + tokenized_str
+            images_seq_mask = [False] + images_seq_mask
+        if eos:
+            tokenized_str = tokenized_str + [self.eos_id]
+            images_seq_mask = images_seq_mask + [False]
+
+        assert len(tokenized_str) == len(
+            images_seq_mask), f"tokenize_with_images func: tokenized_str's length {len(tokenized_str)} is not equal to imags_seq_mask's length {len(images_seq_mask)}"
+
+        return tokenized_str, images_list, images_seq_mask, images_spatial_crop, num_image_tokens
+
+
+AutoProcessor.register("DeepseekVLV2Processor", DeepseekVLV2Processor)

vllm/transformers_utils/processors/ovis.py

@@ -0,0 +1,420 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+# yapf: disable
+# ruff: noqa: E501
+# coding=utf-8
+# adapted from https://github.com/AIDC-AI/Ovis/blob/35ab51a1a1e3542fa6db260a1084cefbc8f164bb/ovis/vllm/processing_ovis.py
+# Copyright 2025 The Qwen Team and The HuggingFace Inc. team. All rights reserved.
+#
+# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
+# and OPT implementations in this library. It has been modified from its
+# original forms to accommodate minor architectural differences compared
+# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from functools import cached_property
+from typing import Union
+
+import PIL
+import torch
+from transformers import AutoProcessor, BatchFeature
+from transformers.image_utils import ImageInput
+from transformers.processing_utils import (ProcessingKwargs, ProcessorMixin,
+                                           Unpack)
+from transformers.tokenization_utils_base import PreTokenizedInput, TextInput
+
+from vllm.multimodal.image import convert_image_mode
+
+__all__ = ['OvisProcessor']
+IGNORE_ID = -100
+
+class OvisProcessorKwargs(ProcessingKwargs, total=False):   # type: ignore[call-arg]
+    _defaults = {
+        "text_kwargs": {
+            "padding": False,
+        },
+        "images_kwargs": {
+            'max_partition':9,
+            'covering_threshold':0.9,
+            'convert_to_rgb':True,
+        'return_tensors':'pt'},
+    }
+
+
+
+class OvisProcessor(ProcessorMixin):
+    r"""
+    Constructs an Ovis processor which wraps an Ovis image processor and a Qwen2 tokenizer into a single processor.
+    [`OvisProcessor`] offers all the functionalities of [`Qwen2VLImageProcessor`] and [`Qwen2TokenizerFast`]. See the
+    [`~OvisProcessor.__call__`] and [`~OvisProcessor.decode`] for more information.
+    Args:
+        image_processor ([`Qwen2VLImageProcessor`], *optional*):
+            The image processor is a required input.
+        tokenizer ([`Qwen2TokenizerFast`], *optional*):
+            The tokenizer is a required input.
+        chat_template (`str`, *optional*): A Jinja template which will be used to convert lists of messages
+            in a chat into a tokenizable string.
+    """
+
+    attributes = ["image_processor", "tokenizer"]
+    valid_kwargs = ["chat_template", "image_pad_token", "image_segment_len"]
+
+    image_processor_class = "AutoImageProcessor"
+    tokenizer_class = "AutoTokenizer"
+
+    def __init__(
+        self,
+        image_processor=None,
+        tokenizer=None,
+        chat_template=None,
+        image_pad_token=None,
+        image_segment_len=255,
+        **kwargs,
+    ):
+        self.image_token = "<image>"
+        self.image_pad_token = image_pad_token
+        self.image_segment_len = image_segment_len
+        super().__init__(image_processor, tokenizer, chat_template=chat_template)
+
+    @cached_property
+    def extra_special_tokens(self):
+        image_pad_token_id = self.tokenizer.get_vocab()[self.image_pad_token]
+        extra_special_tokens = {
+            "image_token": -200,
+            "image_atom": -300,
+            "image_start": -301,
+            "image_prefix": -302,
+            "image_col_sep": -303,
+            "image_row_sep": -304,
+            "image_end": -305,
+            'image_pad': image_pad_token_id,
+        }
+        return extra_special_tokens
+
+    def __call__(
+        self,
+        images: ImageInput = None,
+        text: Union[TextInput, PreTokenizedInput, list[TextInput], list[PreTokenizedInput]] = None,
+        **kwargs: Unpack[OvisProcessorKwargs],
+    ) -> BatchFeature:
+        """
+        Main method to prepare for the model one or several sequences(s) and image(s). This method forwards the `text`
+        and `kwargs` arguments to Qwen2TokenizerFast's [`~Qwen2TokenizerFast.__call__`] if `text` is not `None` to encode
+        the text. To prepare the vision inputs, this method forwards the `vision_infos` and `kwrags` arguments to
+        Qwen2VLImageProcessor's [`~Qwen2VLImageProcessor.__call__`] if `vision_infos` is not `None`.
+            Args:
+                images (`PIL.Image.Image`, `np.ndarray`, `torch.Tensor`, `list[PIL.Image.Image]`, `list[np.ndarray]`, `list[torch.Tensor]`):
+                    The image or batch of images to be prepared. Each image can be a PIL image, NumPy array or PyTorch
+                    tensor. Both channels-first and channels-last formats are supported.
+                text (`str`, `list[str]`, `list[list[str]]`):
+                    The sequence or batch of sequences to be encoded. Each sequence can be a string or a list of strings
+                    (pretokenized string). If the sequences are provided as list of strings (pretokenized), you must set
+                    `is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
+                videos (`np.ndarray`, `torch.Tensor`, `list[np.ndarray]`, `list[torch.Tensor]`):
+                    The image or batch of videos to be prepared. Each video can be a 4D NumPy array or PyTorch
+                    tensor, or a nested list of 3D frames. Both channels-first and channels-last formats are supported.
+                return_tensors (`str` or [`~utils.TensorType`], *optional*):
+                    If set, will return tensors of a particular framework. Acceptable values are:
+                    - `'tf'`: Return TensorFlow `tf.constant` objects.
+                    - `'pt'`: Return PyTorch `torch.Tensor` objects.
+                    - `'np'`: Return NumPy `np.ndarray` objects.
+                    - `'jax'`: Return JAX `jnp.ndarray` objects.
+            Returns:
+                [`BatchFeature`]: A [`BatchFeature`] with the following fields:
+                - **input_ids** -- List of token ids to be fed to a model. Returned when `text` is not `None`.
+                - **attention_mask** -- List of indices specifying which tokens should be attended to by the model (when
+                  `return_attention_mask=True` or if *"attention_mask"* is in `self.model_input_names` and if `text` is not
+                  `None`).
+                - **pixel_values** -- Pixel values to be fed to a model. Returned when `images` is not `None`.
+                - **pixel_values_videos** -- Pixel values of videos to be fed to a model. Returned when `videos` is not `None`.
+                - **image_grid_thw** -- List of image 3D grid in LLM. Returned when `images` is not `None`.
+                - **video_grid_thw** -- List of video 3D grid in LLM. Returned when `videos` is not `None`.
+                - **second_per_grid_ts** -- List of video seconds per time grid. Returned when `videos` is not `None`.
+        """
+        output_kwargs = self._merge_kwargs(
+            OvisProcessorKwargs,
+            tokenizer_init_kwargs=self.tokenizer.init_kwargs,
+            **kwargs,
+        )
+
+        # Process all images first
+        image_features = {}
+        if images is not None:
+            processed_images = []
+            image_placeholders_list = []
+            grids = []
+
+            # Process each image
+            for image in images if isinstance(images, list) else [images]:
+                pixel_values, image_placeholders, grid = self.preprocess_image(
+                    image=image, **output_kwargs["images_kwargs"]
+                )
+                processed_images.append(pixel_values)
+                image_placeholders_list.append(image_placeholders)
+                grids.append(grid)
+
+            # assign all processed images
+            if processed_images:
+                image_features["image_placeholders"] = image_placeholders_list
+
+        # Process text input
+        if text is not None:
+
+            if not isinstance(text, list):
+                text = [text]
+
+            tokenized_batched_text = self._tokenize_with_image_symbol(text)
+            image_token_id = self.get_token_value("image_token")
+            replaced_ids_list = []
+            idx = 0
+            for ids_tensor in tokenized_batched_text:
+                if image_token_id in ids_tensor and "image_placeholders" in image_features:
+                    if idx < len(image_features["image_placeholders"]):
+                        # Converts in list for ease of use
+                        ids_list = ids_tensor.tolist()
+
+                        new_ids = []
+
+                        # replace placeholders
+                        for i, token_id in enumerate(ids_list):
+                            if token_id == image_token_id:
+                                placeholder_ids = image_features["image_placeholders"][idx]
+                                new_ids.extend(placeholder_ids)
+                                idx += 1
+                            else:
+                                new_ids.append(token_id)
+
+                        # Converts back to tensors
+                        ids_tensor = torch.tensor(new_ids, dtype=torch.long)
+                    else:
+                        raise RuntimeError(
+                            'Mismatch between the images you provided and the number of placeholder present in the text')
+
+                replaced_ids_list.append(ids_tensor)
+
+            if replaced_ids_list:
+                replaced_and_tokenized_ids = torch.stack(replaced_ids_list)
+            else:
+                replaced_and_tokenized_ids = torch.tensor([], dtype=torch.long)
+
+            # Create the output with text features
+            output = BatchFeature(
+                data={
+                    "input_ids": replaced_and_tokenized_ids,
+                }
+            )
+
+            # Add image features if present
+            if image_features:
+                output["pixel_values"] = processed_images
+                output['grids'] = grids
+
+            return output
+
+        # If only images were provided
+        return BatchFeature(data=image_features)
+
+    def _tokenize_with_image_symbol(self, text_list: list[str]) -> torch.LongTensor:
+        batch_token_ids = []
+        for text in text_list:
+            text_chunks = [self.tokenizer(chunk, add_special_tokens=False).input_ids for chunk in
+                           text.split(self.image_token)]
+            token_ids = []
+            num_chuck = len(text_chunks)
+            for i, chunk in enumerate(text_chunks):
+                token_ids.extend(chunk)
+                if i < num_chuck - 1:
+                    token_ids.append(self.get_token_value("image_token"))
+            batch_token_ids.append(token_ids)
+        return torch.tensor(batch_token_ids, dtype=torch.long)
+
+    def get_image_size(self):
+        size = self.image_processor.size
+        if 'shortest_edge' in size:
+            width = height = size['shortest_edge']
+        elif "height" in size and "width" in size:
+            width = size['width']
+            height = size['height']
+        else:
+            raise ValueError( "Can't parse image size from image_processor config.")
+        return height, width
+
+    def get_token_value(self, tok):
+        return self.extra_special_tokens[tok]
+
+    def construct_image_indicators(self, grid):
+        image_placeholders = [self.get_token_value('image_start'),
+                              self.get_token_value('image_atom'),
+                              self.get_token_value('image_prefix')]
+        if grid[0] * grid[1] > 1:
+            for r in range(grid[0]):
+                for c in range(grid[1]):
+                    image_placeholders.append(self.get_token_value('image_atom') )
+                    if c < grid[1] - 1:
+                        image_placeholders.append(self.get_token_value('image_col_sep'))
+                if r < grid[0] - 1:
+                    image_placeholders.append(self.get_token_value('image_row_sep'))
+        image_placeholders.append(self.get_token_value('image_end'))
+        return image_placeholders
+
+    def construct_image_placeholders(self, grid):
+
+        image_placeholders = self.construct_image_indicators(grid)
+
+        image_atom_token_id = self.get_token_value('image_atom')
+        # Extract the padding token ID from tokenizer
+        image_padding_token_id = self.get_token_value('image_pad')
+
+        # Create a new list with padding tokens inserted
+        padded_placeholder_tokens = []
+        for token in image_placeholders:
+            padded_placeholder_tokens.append(image_padding_token_id)
+            if token == image_atom_token_id:
+                padded_placeholder_tokens.extend([image_padding_token_id] * self.image_segment_len)
+        return padded_placeholder_tokens
+
+    def preprocess_image(self, image: PIL.Image.Image, max_partition, covering_threshold, convert_to_rgb, return_tensors):
+        def _preprocess(img: PIL.Image.Image, side):
+            # first resize and preprocess
+            w, h = img.size
+            if w == h:
+                new_width = new_height = side
+            elif w > h:
+                new_width = side
+                new_height = int(h / w * new_width)
+            else:
+                new_height = side
+                new_width = int(w / h * new_height)
+            new_size = dict(height=new_height, width=new_width)
+            pixel_values = self.image_processor.preprocess(img, size=new_size, return_tensors=return_tensors)['pixel_values']
+
+            # then pad to square
+            square_values = torch.zeros([1, 3, side, side], dtype=pixel_values.dtype, device=pixel_values.device)
+            new_height, new_width = pixel_values.shape[2:]
+            if new_height == new_width:
+                square_values[:, :, :, :] = pixel_values
+            elif new_height > new_width:
+                from_index = (side - new_width) // 2
+                square_values[:, :, :, from_index:from_index + new_width] = pixel_values
+            else:
+                from_index = (side - new_height) // 2
+                square_values[:, :, from_index:from_index + new_height, :] = pixel_values
+
+            return square_values
+
+        def _partition(img, grid) -> list[tuple[int, int, int, int]]:
+            w, h = img.size
+            row_height = h // grid[0]
+            col_width = w // grid[1]
+
+            partition = []
+            for row in range(grid[0]):
+                for col in range(grid[1]):
+                    left = col * col_width
+                    upper = row * row_height
+                    right = w if col == grid[1] - 1 else (col + 1) * col_width
+                    lower = h if row == grid[0] - 1 else (row + 1) * row_height
+                    partition.append((left, upper, right, lower))
+
+            return partition
+
+        def _covering_area(left, upper, right, lower, side):
+            w = right - left
+            h = lower - upper
+            w, h = max(w, h), min(w, h)
+            if w > side:
+                h = h / w * side
+                w = side
+            return w * h
+
+        def _get_best_grid(img, side):
+            img_area = img.size[0] * img.size[1]
+
+            candidate_grids = []
+            for i in range(1, max_partition + 1):
+                for j in range(1, max_partition + 1):
+                    if i * j <= max_partition:
+                        candidate_grids.append((i, j))
+
+            all_grids = []
+            good_grids = []
+            for grid in candidate_grids:
+                partition = _partition(img, grid)
+                covering_ratio = sum([_covering_area(*p, side) for p in partition]) / img_area
+                assert covering_ratio <= 1.0
+                all_grids.append((grid, covering_ratio))
+                if covering_ratio > covering_threshold:
+                    good_grids.append((grid, covering_ratio))
+
+            if len(good_grids) > 0:
+                # pick the good partition with minimum #sub_images and break the tie using covering_ratio
+                return sorted(good_grids, key=lambda x: (x[0][0] * x[0][1], -x[1]))[0][0]
+            else:
+                # pick the partition with maximum covering_ratio and break the tie using #sub_images
+                return sorted(all_grids, key=lambda x: (-x[1], x[0][0] * x[0][1]))[0][0]
+
+        if convert_to_rgb:
+            image = convert_image_mode(image, 'RGB')
+
+
+        sides = self.get_image_size()
+        if sides[0] != sides[1]:
+            raise ValueError('get_image_size() returns non-square size')
+        side = sides[0]
+        grid = _get_best_grid(image, side)
+        partition = _partition(image, grid)
+        crops = [image.crop(p) for p in partition]
+        if len(crops) > 1:
+            crops.insert(0, image)
+        pixel_values = torch.cat([_preprocess(crop, side) for crop in crops], dim=0)
+        image_placeholders = self.construct_image_placeholders(grid)
+        return pixel_values, image_placeholders, grid
+
+    def batch_decode(self, *args, **kwargs):
+        """
+        This method forwards all its arguments to Qwen2TokenizerFast's [`~PreTrainedTokenizer.batch_decode`]. Please
+        refer to the docstring of this method for more information.
+        """
+        return self.tokenizer.batch_decode(*args, **kwargs)
+
+    def decode(self, *args, **kwargs):
+        """
+        This method forwards all its arguments to Qwen2TokenizerFast's [`~PreTrainedTokenizer.decode`]. Please refer to
+        the docstring of this method for more information.
+        """
+        return self.tokenizer.decode(*args, **kwargs)
+
+    def post_process_image_text_to_text(self, generated_outputs):
+        """
+        Post-process the output of the model to decode the text.
+        Args:
+            generated_outputs (`torch.Tensor` or `np.ndarray`):
+                The output of the model `generate` function. The output is expected to be a tensor of shape `(batch_size, sequence_length)`
+                or `(sequence_length,)`.
+        Returns:
+            `list[str]`: The decoded text.
+        """
+        return self.tokenizer.batch_decode(
+            generated_outputs, skip_special_tokens=True, clean_up_tokenization_spaces=False
+        )
+
+    @property
+    def model_input_names(self):
+        tokenizer_input_names = self.tokenizer.model_input_names
+        image_processor_input_names = self.image_processor.model_input_names
+        names_from_processor = list(dict.fromkeys(tokenizer_input_names + image_processor_input_names))
+        return names_from_processor + ["second_per_grid_ts"]
+
+
+AutoProcessor.register("OvisProcessor", OvisProcessor)

vllm/transformers_utils/processors/ovis2_5.py

@@ -0,0 +1,458 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import math
+from functools import cached_property
+from typing import Optional, Union
+
+import numpy as np
+import PIL
+import torch
+from transformers import AutoProcessor, BatchFeature
+from transformers.image_utils import ImageInput
+from transformers.processing_utils import (ProcessingKwargs, ProcessorMixin,
+                                           Unpack)
+from transformers.tokenization_utils_base import PreTokenizedInput, TextInput
+
+__all__ = ['Ovis2_5Processor']
+IMAGE_TOKEN = "<image>"
+VIDEO_TOKEN = "<video>"
+MIN_PIXELS = 448 * 448
+MAX_PIXELS = 1792 * 1792
+
+
+class Ovis2_5ProcessorKwargs(ProcessingKwargs,
+                             total=False):  # type: ignore[call-arg]
+    _defaults = {
+        "text_kwargs": {
+            "padding": False,
+        },
+        "images_kwargs": {
+            'convert_to_rgb': True,
+            'min_pixels': MIN_PIXELS,
+            'max_pixels': MAX_PIXELS,
+        },
+        "videos_kwargs": {
+            'convert_to_rgb': True,
+            'min_pixels': MIN_PIXELS,
+            'max_pixels': MAX_PIXELS,
+        }
+    }
+
+
+class Ovis2_5Processor(ProcessorMixin):
+    r"""
+    Constructs an Ovis processor which wraps an Ovis image processor
+    and a Qwen2 tokenizer into a single processor.
+    [`OvisProcessor`] offers all the functionalities of 
+    [`Qwen2VLImageProcessor`] and [`Qwen2TokenizerFast`]. 
+    See the [`~OvisProcessor.__call__`] and [`~OvisProcessor.decode`]
+    for more information.
+    Args:
+        image_processor ([`Qwen2VLImageProcessor`], *optional*):
+            The image processor is a required input.
+        tokenizer ([`Qwen2TokenizerFast`], *optional*):
+            The tokenizer is a required input.
+        chat_template (`str`, *optional*): A Jinja template which will
+            be used to convert lists of messages in a chat into
+            a tokenizable string.
+    """
+
+    attributes = ["image_processor", "tokenizer"]
+    valid_kwargs = ["chat_template", "image_pad_token"]
+
+    image_processor_class = "AutoImageProcessor"
+    tokenizer_class = "AutoTokenizer"
+
+    def __init__(
+        self,
+        image_processor=None,
+        tokenizer=None,
+        chat_template=None,
+        image_pad_token=None,
+        patch_size=16,
+        hidden_stride=2,
+        temporal_patch_size=1,
+        **kwargs,
+    ):
+        self.image_token = IMAGE_TOKEN
+        self.video_token = VIDEO_TOKEN
+        self.image_pad_token = "<|image_pad|>"
+
+        self.patch_size = patch_size
+        self.hidden_stride = hidden_stride
+        self.temporal_patch_size = temporal_patch_size
+        super().__init__(image_processor,
+                         tokenizer,
+                         chat_template=chat_template)
+
+    @cached_property
+    def extra_special_tokens(self):
+        image_pad_token_id = self.tokenizer.get_vocab()[self.image_pad_token]
+        extra_special_tokens = {
+            "image_token": -200,
+            "video_token": -201,
+            "visual_atom": -300,
+            "image_start": -301,
+            "image_end": -302,
+            "video_start": -303,
+            "video_end": -304,
+            'image_pad': image_pad_token_id,
+        }
+        return extra_special_tokens
+
+    def __call__(
+        self,
+        images: ImageInput = None,
+        videos: Union[np.ndarray, list[ImageInput]] = None,
+        text: Union[TextInput, PreTokenizedInput, list[TextInput],
+                    list[PreTokenizedInput]] = None,
+        **kwargs: Unpack[Ovis2_5ProcessorKwargs],
+    ) -> BatchFeature:
+        """
+        Main method to prepare for the model one or several sequences(s)
+        and image(s). This method forwards the `text`and `kwargs` arguments
+        to Qwen2TokenizerFast's [`~Qwen2TokenizerFast.__call__`] if `text`
+        is not `None` to encode the text. To prepare the vision inputs,
+        this method forwards the `vision_infos` and `kwrags` arguments to
+        Qwen2VLImageProcessor's [`~Qwen2VLImageProcessor.__call__`]
+        if `vision_infos` is not `None`.
+            Args:
+                images (`PIL.Image.Image`, `np.ndarray`, `torch.Tensor`,
+                    `list[PIL.Image.Image]`, `list[np.ndarray]`,
+                    `list[torch.Tensor]`):
+                    The image or batch of images to be prepared.
+                    Each image can be a PIL image, NumPy array or PyTorch
+                    tensor. Both channels-first and channels-last formats
+                    are supported.
+                text (`str`, `list[str]`, `list[list[str]]`):
+                    The sequence or batch of sequences to be encoded.
+                    Each sequence can be a string or a list of strings
+                    (pretokenized string). If the sequences are provided as
+                    list of strings (pretokenized), you must set
+                    `is_split_into_words=True` (to lift the ambiguity with
+                    a batch of sequences).
+                videos (`np.ndarray`, `torch.Tensor`, `list[np.ndarray]`,
+                    `list[torch.Tensor]`):
+                    The image or batch of videos to be prepared. Each video
+                    can be a 4D NumPy array or PyTorch tensor, or a nested
+                    list of 3D frames. Both channels-first and channels-last
+                    formats are supported.
+                return_tensors (`str` or [`~utils.TensorType`], *optional*):
+                    If set, will return tensors of a particular framework.
+                    Acceptable values are:
+                    - `'tf'`: Return TensorFlow `tf.constant` objects.
+                    - `'pt'`: Return PyTorch `torch.Tensor` objects.
+                    - `'np'`: Return NumPy `np.ndarray` objects.
+                    - `'jax'`: Return JAX `jnp.ndarray` objects.
+            Returns:
+                [`BatchFeature`]: A [`BatchFeature`] with the following fields:
+                - **input_ids** -- list of token ids to be fed to a model.
+                  Returned when `text` is not `None`.
+                - **attention_mask** -- list of indices specifying which tokens 
+                  should be attended to by the model (when
+                  `return_attention_mask=True` or if *"attention_mask"* 
+                  is in `self.model_input_names` and if `text` is not `None`).
+                - **pixel_values** -- Pixel values to be fed to a model.
+                  Returned when `images` is not `None`.
+                - **pixel_values_videos** -- Pixel values of videos to be fed to
+                  a model. Returned when `videos` is not `None`.
+                - **image_grid_thw** -- list of image 3D grid in LLM. Returned
+                  when `images` is not `None`.
+                - **video_grid_thw** -- list of video 3D grid in LLM. Returned
+                  when `videos` is not `None`.
+                - **second_per_grid_ts** -- list of video seconds per time grid.
+                  Returned when `videos` is not `None`.
+        """
+        output_kwargs = self._merge_kwargs(
+            Ovis2_5ProcessorKwargs,
+            tokenizer_init_kwargs=self.tokenizer.init_kwargs,
+            **kwargs,
+        )
+        # Process all images first
+        visual_features = {}
+        output = BatchFeature()
+        if images is not None:
+            processed_images = []
+            image_placeholders_list = []
+            grids = []
+            # Process each image
+            for image in images if isinstance(images, list) else [images]:
+                pixel_values, image_placeholders, grid = (
+                    self.preprocess_multidata(
+                        images=image, **output_kwargs["images_kwargs"]))
+                processed_images.append(pixel_values)
+                image_placeholders_list.append(image_placeholders)
+                grids.append(grid)
+
+            # assign all processed images
+            if processed_images:
+                visual_features["image_placeholders"] = image_placeholders_list
+            output["pixel_values"] = processed_images
+            output["grids"] = grids
+
+        if videos is not None:
+            processed_videos = []
+            videos_placeholders_list = []
+            grids = []
+            # Process each video
+            for video in videos if isinstance(videos, list) else [videos]:
+                pixel_values, video_placeholders, grid = (
+                    self.preprocess_multidata(
+                        video=video, **output_kwargs["videos_kwargs"]))
+                processed_videos.append(pixel_values)
+                videos_placeholders_list.append(video_placeholders)
+                grids.append(grid)
+            # assign all processed videos
+            if processed_videos:
+                visual_features[
+                    "video_placeholders"] = videos_placeholders_list
+            output["video_pixel_values"] = processed_videos
+            output["video_grids"] = grids
+
+        # Process text input
+        if text is not None:
+            if not isinstance(text, list):
+                text = [text]
+            tokenized_batched_text = self._tokenize_with_visual_symbol(text)
+            image_token_id = self.get_token_value("image_token")
+            video_token_id = self.get_token_value("video_token")
+            replaced_ids_list = []
+            image_idx = 0
+            video_idx = 0
+            for ids_tensor in tokenized_batched_text:
+                has_image_tokens = (image_token_id in ids_tensor
+                                    and "image_placeholders" in visual_features
+                                    and image_idx < len(
+                                        visual_features["image_placeholders"]))
+                has_video_tokens = (video_token_id in ids_tensor
+                                    and "video_placeholders" in visual_features
+                                    and video_idx < len(
+                                        visual_features["video_placeholders"]))
+                if has_image_tokens or has_video_tokens:
+                    # Convert to list for easier manipulation
+                    ids_list = ids_tensor.tolist()
+                    new_ids = []
+
+                    # Replace placeholders
+                    for token_id in ids_list:
+                        if token_id == image_token_id:
+                            new_ids.extend(
+                                visual_features["image_placeholders"]
+                                [image_idx])
+                            image_idx += 1
+                        elif token_id == video_token_id:
+                            new_ids.extend(
+                                visual_features["video_placeholders"]
+                                [video_idx])
+                            video_idx += 1
+                        else:
+                            new_ids.append(token_id)
+                    # Convert back to tensor
+                    ids_tensor = torch.tensor(new_ids, dtype=torch.long)
+                replaced_ids_list.append(ids_tensor)
+            if replaced_ids_list:
+                replaced_and_tokenized_ids = torch.stack(replaced_ids_list)
+            else:
+                replaced_and_tokenized_ids = torch.tensor([], dtype=torch.long)
+            output["input_ids"] = replaced_and_tokenized_ids
+
+            return output
+        # If only images were provided
+        return BatchFeature(data=visual_features)
+
+    def _tokenize_with_visual_symbol(self,
+                                     text_list: list[str]) -> torch.LongTensor:
+        batch_token_ids = []
+        for text in text_list:
+            token_ids = []
+            video_token_id = self.get_token_value("video_token")
+            image_token_id = self.get_token_value("image_token")
+            video_split_texts = text.split(self.video_token)
+
+            for j, video_segment in enumerate(video_split_texts):
+                image_split_texts = video_segment.split(self.image_token)
+                text_chunks = [
+                    self.tokenizer(chunk, add_special_tokens=False).input_ids
+                    for chunk in image_split_texts
+                ]
+                segment_tokens = []
+                for i, chunk in enumerate(text_chunks):
+                    segment_tokens.extend(chunk)
+                    if i < len(text_chunks) - 1:
+                        segment_tokens.append(image_token_id)
+                token_ids.extend(segment_tokens)
+                if j < len(video_split_texts) - 1:
+                    token_ids.append(video_token_id)
+
+            batch_token_ids.append(token_ids)
+        return torch.tensor(batch_token_ids, dtype=torch.long)
+
+    # Copied from qwen2_vl
+    def smart_resize(self,
+                     height: int,
+                     width: int,
+                     factor: int = 28,
+                     min_pixels: int = MIN_PIXELS,
+                     max_pixels: int = MAX_PIXELS):
+        """Rescales the image so that the following conditions are met:
+        1. Both dimensions (height and width) are divisible by 'factor'.
+        2. The total number of pixels is within the range 
+            ['min_pixels', 'max_pixels'].
+        3. The aspect ratio of the image is maintained as closely as possible.
+        """
+        if height < factor or width < factor:
+            print(f"height:{height} or width:{width} must be "
+                  f"larger than factor:{factor}")
+            if height < width:
+                width = round(factor / height * width)
+                height = factor
+            else:
+                height = round(factor / width * height)
+                width = factor
+
+        elif max(height, width) / min(height, width) > 200:
+            print(f"absolute aspect ratio must be smaller than 200, "
+                  f"got {max(height, width) / min(height, width)}")
+            if height > width:
+                height = 200 * width
+            else:
+                width = 200 * height
+
+        h_bar = round(height / factor) * factor
+        w_bar = round(width / factor) * factor
+        if h_bar * w_bar > max_pixels:
+            beta = math.sqrt((height * width) / max_pixels)
+            h_bar = math.floor(height / beta / factor) * factor
+            w_bar = math.floor(width / beta / factor) * factor
+        elif h_bar * w_bar < min_pixels:
+            beta = math.sqrt(min_pixels / (height * width))
+            h_bar = math.ceil(height * beta / factor) * factor
+            w_bar = math.ceil(width * beta / factor) * factor
+        return h_bar, w_bar
+
+    def get_token_value(self, tok):
+        return self.extra_special_tokens[tok]
+
+    def construct_visual_indicators(self, grid, is_video: bool = False):
+        if is_video:
+            start_token = self.get_token_value('video_start')
+            end_token = self.get_token_value('video_end')
+        else:
+            start_token = self.get_token_value('image_start')
+            end_token = self.get_token_value('image_end')
+
+        image_placeholders = [start_token, self.get_token_value('visual_atom')]
+        if grid[0] * grid[1] > 1:
+            for r in range(grid[0]):
+                for c in range(grid[1]):
+                    image_placeholders.append(
+                        self.get_token_value('visual_atom'))
+
+        image_placeholders.append(end_token)
+        return image_placeholders
+
+    def construct_visual_placeholders(self, grid, is_video: bool = False):
+        visual_placeholders = self.construct_visual_indicators((1, 1),
+                                                               is_video)
+
+        image_atom_token_id = self.get_token_value('visual_atom')
+        # Extract the padding token ID from tokenizer
+        image_padding_token_id = self.get_token_value('image_pad')
+
+        num_image_atoms = grid[0] * grid[1] * grid[2]
+        num_image_atoms //= self.hidden_stride**2
+        num_image_atoms //= self.temporal_patch_size
+
+        # Create a new list with padding tokens inserted
+        padded_placeholder_tokens = []
+        for token in visual_placeholders:
+            if token == image_atom_token_id:
+                padded_placeholder_tokens.extend([image_padding_token_id] *
+                                                 num_image_atoms)
+            else:
+                padded_placeholder_tokens.append(image_padding_token_id)
+        return padded_placeholder_tokens
+
+    def preprocess_multidata(
+        self,
+        images: Optional[Union[PIL.Image.Image, list[PIL.Image.Image]]] = None,
+        video: Optional[Union[list[PIL.Image.Image], np.ndarray]] = None,
+        convert_to_rgb: Optional[bool] = True,
+        min_pixels: int = MIN_PIXELS,
+        max_pixels: int = MAX_PIXELS,
+        return_tensors: Optional[str] = 'pt',
+    ):
+        is_video = False
+        if images is not None:
+            if not isinstance(images, list):
+                images = [images]
+        elif video is not None:
+            is_video = True
+            # type of vidoe in dummy_mm_data is np.ndarray
+            if isinstance(video, np.ndarray):
+                images = []
+                for i in range(video.shape[0]):
+                    image = PIL.Image.fromarray(video[i].astype(np.uint8))
+                    images.append(image)
+            elif isinstance(video, list):
+                images = video
+        min_pixels = min(max_pixels if max_pixels is not None else MAX_PIXELS,
+                         min_pixels if min_pixels is not None else MIN_PIXELS)
+        images = [
+            image.convert("RGB")
+            if convert_to_rgb and image.mode != 'RGB' else image
+            for image in images
+        ]
+
+        width, height = images[0].size
+        resized_height, resized_width = height, width
+        processed_images = []
+        for image in images:
+            resized_height, resized_width = self.smart_resize(
+                height,
+                width,
+                factor=self.patch_size * self.hidden_stride,
+                min_pixels=min_pixels,
+                max_pixels=max_pixels,
+            )
+            new_size = dict(height=resized_height, width=resized_width)
+            image_pt = self.image_processor.preprocess(
+                image, size=new_size, return_tensors="np")['pixel_values'][0]
+
+            processed_images.append(image_pt)
+
+        patches = np.array(processed_images)
+        if patches.shape[0] % self.temporal_patch_size != 0:
+            num_to_pad = self.temporal_patch_size - (patches.shape[0] %
+                                                     self.temporal_patch_size)
+            repeats = np.repeat(patches[-1][np.newaxis], num_to_pad, axis=0)
+            patches = np.concatenate([patches, repeats], axis=0)
+        channel = patches.shape[1]
+        grid_t = patches.shape[0] // self.temporal_patch_size
+        grid_h = resized_height // self.patch_size
+        grid_w = resized_width // self.patch_size
+
+        patches = patches.reshape(
+            grid_t,
+            self.temporal_patch_size,
+            channel,
+            grid_h // self.hidden_stride,
+            self.hidden_stride,
+            self.patch_size,
+            grid_w // self.hidden_stride,
+            self.hidden_stride,
+            self.patch_size,
+        )
+        patches = patches.transpose(0, 3, 6, 4, 7, 2, 1, 5, 8)
+        flatten_patches = patches.reshape(
+            grid_t * grid_h * grid_w, channel * self.temporal_patch_size *
+            self.patch_size * self.patch_size)
+
+        visual_placeholders = self.construct_visual_placeholders(
+            [grid_t, grid_h, grid_w], is_video)
+        return torch.tensor(
+            flatten_patches), visual_placeholders, torch.tensor(
+                [[grid_t, grid_h, grid_w]])
+
+
+AutoProcessor.register("Ovis2_5Processor", Ovis2_5Processor)

vllm/transformers_utils/runai_utils.py

@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import hashlib
+import os
+import shutil
+import signal
+from typing import Optional
+
+from vllm import envs
+from vllm.assets.base import get_cache_dir
+from vllm.logger import init_logger
+from vllm.utils import PlaceholderModule
+
+logger = init_logger(__name__)
+
+SUPPORTED_SCHEMES = ['s3://', 'gs://']
+
+try:
+    from runai_model_streamer import list_safetensors as runai_list_safetensors
+    from runai_model_streamer import pull_files as runai_pull_files
+except (ImportError, OSError):
+    # see https://github.com/run-ai/runai-model-streamer/issues/26
+    # OSError will be raised on arm64 platform
+    runai_model_streamer = PlaceholderModule(
+        "runai_model_streamer")  # type: ignore[assignment]
+    runai_pull_files = runai_model_streamer.placeholder_attr("pull_files")
+    runai_list_safetensors = runai_model_streamer.placeholder_attr(
+        "list_safetensors")
+
+
+def list_safetensors(path: str = "") -> list[str]:
+    """
+    List full file names from object path and filter by allow pattern.
+
+    Args:
+        path: The object storage path to list from.
+
+    Returns:
+        list[str]: List of full object storage paths allowed by the pattern
+    """
+    return runai_list_safetensors(path)
+
+
+def is_runai_obj_uri(model_or_path: str) -> bool:
+    return model_or_path.lower().startswith(tuple(SUPPORTED_SCHEMES))
+
+
+class ObjectStorageModel:
+    """
+    A class representing an ObjectStorage model mirrored into a
+    temporary directory.
+
+    Attributes:
+        dir: The temporary created directory.
+
+    Methods:
+        pull_files(): Pull model from object storage to the temporary directory.
+    """
+
+    def __init__(self, url: str) -> None:
+        if envs.VLLM_ASSETS_CACHE_MODEL_CLEAN:
+            for sig in (signal.SIGINT, signal.SIGTERM):
+                existing_handler = signal.getsignal(sig)
+                signal.signal(sig, self._close_by_signal(existing_handler))
+
+        dir_name = os.path.join(
+            get_cache_dir(), "model_streamer",
+            hashlib.sha256(str(url).encode()).hexdigest()[:8])
+        if os.path.exists(dir_name):
+            shutil.rmtree(dir_name)
+        os.makedirs(dir_name)
+        self.dir = dir_name
+        logger.debug("Init object storage, model cache path is: %s", dir_name)
+
+    def _close(self) -> None:
+        if os.path.exists(self.dir):
+            shutil.rmtree(self.dir)
+
+    def _close_by_signal(self, existing_handler=None):
+
+        def new_handler(signum, frame):
+            self._close()
+            if existing_handler:
+                existing_handler(signum, frame)
+
+        return new_handler
+
+    def pull_files(self,
+                   model_path: str = "",
+                   allow_pattern: Optional[list[str]] = None,
+                   ignore_pattern: Optional[list[str]] = None) -> None:
+        """
+        Pull files from object storage into the temporary directory.
+
+        Args:
+            model_path: The object storage path of the model.
+            allow_pattern: A list of patterns of which files to pull.
+            ignore_pattern: A list of patterns of which files not to pull.
+
+        """
+        if not model_path.endswith("/"):
+            model_path = model_path + "/"
+        runai_pull_files(model_path, self.dir, allow_pattern, ignore_pattern)

vllm/transformers_utils/s3_utils.py

@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import fnmatch
+from typing import TYPE_CHECKING, Optional
+
+from vllm.utils import PlaceholderModule
+
+if TYPE_CHECKING:
+    from botocore.client import BaseClient
+
+try:
+    import boto3
+except ImportError:
+    boto3 = PlaceholderModule("boto3")  # type: ignore[assignment]
+
+
+def _filter_allow(paths: list[str], patterns: list[str]) -> list[str]:
+    return [
+        path for path in paths if any(
+            fnmatch.fnmatch(path, pattern) for pattern in patterns)
+    ]
+
+
+def _filter_ignore(paths: list[str], patterns: list[str]) -> list[str]:
+    return [
+        path for path in paths
+        if not any(fnmatch.fnmatch(path, pattern) for pattern in patterns)
+    ]
+
+
+def glob(s3: Optional["BaseClient"] = None,
+         path: str = "",
+         allow_pattern: Optional[list[str]] = None) -> list[str]:
+    """
+    List full file names from S3 path and filter by allow pattern.
+
+    Args:
+        s3: S3 client to use.
+        path: The S3 path to list from.
+        allow_pattern: A list of patterns of which files to pull.
+
+    Returns:
+        list[str]: List of full S3 paths allowed by the pattern
+    """
+    if s3 is None:
+        s3 = boto3.client("s3")
+    if not path.endswith("/"):
+        path = path + "/"
+    bucket_name, _, paths = list_files(s3,
+                                       path=path,
+                                       allow_pattern=allow_pattern)
+    return [f"s3://{bucket_name}/{path}" for path in paths]
+
+
+def list_files(
+        s3: "BaseClient",
+        path: str,
+        allow_pattern: Optional[list[str]] = None,
+        ignore_pattern: Optional[list[str]] = None
+) -> tuple[str, str, list[str]]:
+    """
+    List files from S3 path and filter by pattern.
+
+    Args:
+        s3: S3 client to use.
+        path: The S3 path to list from.
+        allow_pattern: A list of patterns of which files to pull.
+        ignore_pattern: A list of patterns of which files not to pull.
+
+    Returns:
+        tuple[str, str, list[str]]: A tuple where:
+            - The first element is the bucket name
+            - The second element is string represent the bucket 
+              and the prefix as a dir like string
+            - The third element is a list of files allowed or 
+              disallowed by pattern
+    """
+    parts = path.removeprefix('s3://').split('/')
+    prefix = '/'.join(parts[1:])
+    bucket_name = parts[0]
+
+    objects = s3.list_objects_v2(Bucket=bucket_name, Prefix=prefix)
+    paths = [obj['Key'] for obj in objects.get('Contents', [])]
+
+    paths = _filter_ignore(paths, ["*/"])
+    if allow_pattern is not None:
+        paths = _filter_allow(paths, allow_pattern)
+
+    if ignore_pattern is not None:
+        paths = _filter_ignore(paths, ignore_pattern)
+
+    return bucket_name, prefix, paths

vllm/transformers_utils/tokenizer.py

@@ -0,0 +1,292 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import contextlib
+import copy
+import os
+import warnings
+from functools import lru_cache
+from pathlib import Path
+from typing import TYPE_CHECKING, Any, Optional, Union
+
+import huggingface_hub
+from transformers import (AutoTokenizer, PreTrainedTokenizer,
+                          PreTrainedTokenizerFast)
+from typing_extensions import assert_never
+
+from vllm import envs
+from vllm.logger import init_logger
+from vllm.transformers_utils.config import (
+    get_sentence_transformer_tokenizer_config)
+from vllm.transformers_utils.tokenizers import MistralTokenizer
+from vllm.transformers_utils.utils import check_gguf_file
+
+if TYPE_CHECKING:
+    from vllm.config import ModelConfig
+    from vllm.lora.request import LoRARequest
+    from vllm.transformers_utils.tokenizer_base import TokenizerBase
+else:
+    ModelConfig = Any
+    LoRARequest = Any
+    TokenizerBase = Any
+
+logger = init_logger(__name__)
+
+AnyTokenizer = Union[PreTrainedTokenizer, PreTrainedTokenizerFast,
+                     TokenizerBase]
+
+
+def decode_tokens(
+    tokenizer: AnyTokenizer,
+    token_ids: list[int],
+    *,
+    skip_special_tokens: Optional[bool] = None,
+) -> str:
+    """
+    Backend-agnostic equivalent of HF's
+    `tokenizer.decode(token_ids, ...)`.
+
+    `skip_special_tokens=None` means to use the backend's default
+    settings.
+    """
+    if skip_special_tokens is not None:
+        return tokenizer.decode(token_ids,
+                                skip_special_tokens=skip_special_tokens)
+
+    return tokenizer.decode(token_ids)
+
+
+def encode_tokens(
+    tokenizer: AnyTokenizer,
+    text: str,
+    *,
+    truncation: Optional[bool] = None,
+    max_length: Optional[int] = None,
+    add_special_tokens: Optional[bool] = None,
+) -> list[int]:
+    """
+    Backend-agnostic equivalent of HF's
+    `tokenizer.encode(text, ...)`.
+
+    `add_special_tokens=None` means to use the backend's default
+    settings.
+    """
+
+    kw_args: dict[str, Any] = {}
+    if max_length is not None:
+        kw_args["max_length"] = max_length
+
+    if truncation is not None:
+        kw_args["truncation"] = truncation
+
+    if add_special_tokens is not None:
+        kw_args["add_special_tokens"] = add_special_tokens
+
+    return tokenizer.encode(text, **kw_args)
+
+
+def get_cached_tokenizer(tokenizer: AnyTokenizer) -> AnyTokenizer:
+    """
+    By default, transformers will recompute multiple tokenizer properties
+    each time they are called, leading to a significant slowdown.
+    This proxy caches these properties for faster access.
+    """
+    cached_tokenizer = copy.copy(tokenizer)
+
+    tokenizer_all_special_ids = tokenizer.all_special_ids
+    tokenizer_all_special_tokens = tokenizer.all_special_tokens
+    tokenizer_all_special_tokens_extended = (
+        tokenizer.all_special_tokens_extended)
+    tokenizer_vocab = tokenizer.get_vocab()
+    tokenizer_len = len(tokenizer)
+
+    max_token_id = max(tokenizer_vocab.values())
+    # Some tokenizers (e.g., QwenTokenizer) have special tokens that
+    # are added and included in the implementation of the vocab_size
+    # property, but not in get_vocab(); if there is an implementation
+    # of vocab size, we should take the greater value.
+    if hasattr(tokenizer, "vocab_size"):
+        with contextlib.suppress(NotImplementedError):
+            max_token_id = max(max_token_id, tokenizer.vocab_size)
+
+    class CachedTokenizer(tokenizer.__class__):  # type: ignore
+
+        @property
+        def all_special_ids(self) -> list[int]:
+            return tokenizer_all_special_ids
+
+        @property
+        def all_special_tokens(self) -> list[str]:
+            return tokenizer_all_special_tokens
+
+        @property
+        def all_special_tokens_extended(self) -> list[str]:
+            return tokenizer_all_special_tokens_extended
+
+        @property
+        def max_token_id(self) -> int:
+            return max_token_id
+
+        def get_vocab(self) -> dict[str, int]:
+            return tokenizer_vocab
+
+        def __len__(self) -> int:
+            return tokenizer_len
+
+        def __reduce__(self):
+            return get_cached_tokenizer, (tokenizer, )
+
+    CachedTokenizer.__name__ = f"Cached{tokenizer.__class__.__name__}"
+
+    cached_tokenizer.__class__ = CachedTokenizer
+    return cached_tokenizer
+
+
+def get_tokenizer(
+    tokenizer_name: Union[str, Path],
+    *args,
+    tokenizer_mode: str = "auto",
+    trust_remote_code: bool = False,
+    revision: Optional[str] = None,
+    download_dir: Optional[str] = None,
+    **kwargs,
+) -> AnyTokenizer:
+    """Gets a tokenizer for the given model name via HuggingFace or ModelScope.
+    """
+    if envs.VLLM_USE_MODELSCOPE:
+        # download model from ModelScope hub,
+        # lazy import so that modelscope is not required for normal use.
+        # pylint: disable=C.
+        from modelscope.hub.snapshot_download import snapshot_download
+
+        # avoid circuit import
+        from vllm.model_executor.model_loader.weight_utils import get_lock
+
+        # Only set the tokenizer here, model will be downloaded on the workers.
+        if not os.path.exists(tokenizer_name):
+            # Use file lock to prevent multiple processes from
+            # downloading the same file at the same time.
+            with get_lock(tokenizer_name, download_dir):
+                tokenizer_path = snapshot_download(
+                    model_id=tokenizer_name,
+                    cache_dir=download_dir,
+                    revision=revision,
+                    local_files_only=huggingface_hub.constants.HF_HUB_OFFLINE,
+                    # Ignore weights - we only need the tokenizer.
+                    ignore_file_pattern=[".*.pt", ".*.safetensors", ".*.bin"])
+                tokenizer_name = tokenizer_path
+
+    if tokenizer_mode == "slow":
+        if kwargs.get("use_fast", False):
+            raise ValueError(
+                "Cannot use the fast tokenizer in slow tokenizer mode.")
+        kwargs["use_fast"] = False
+
+    if "truncation_side" not in kwargs:
+        kwargs["truncation_side"] = "left"
+
+    # Separate model folder from file path for GGUF models
+    is_gguf = check_gguf_file(tokenizer_name)
+    if is_gguf:
+        kwargs["gguf_file"] = Path(tokenizer_name).name
+        tokenizer_name = Path(tokenizer_name).parent
+
+    # if tokenizer is from official mistral org
+    is_from_mistral_org = str(tokenizer_name).split("/")[0] == "mistralai"
+    if is_from_mistral_org and tokenizer_mode != "mistral":
+        warnings.warn(
+            'It is strongly recommended to run mistral models with '
+            '`--tokenizer-mode "mistral"` to ensure correct '
+            'encoding and decoding.',
+            FutureWarning,
+            stacklevel=2)
+
+    tokenizer: AnyTokenizer
+    if tokenizer_mode == "mistral":
+        tokenizer = MistralTokenizer.from_pretrained(str(tokenizer_name),
+                                                     revision=revision)
+    elif tokenizer_mode == "custom":
+        from vllm.transformers_utils.tokenizer_base import TokenizerRegistry
+        tokenizer = TokenizerRegistry.get_tokenizer(str(tokenizer_name),
+                                                    *args,
+                                                    revision=revision,
+                                                    download_dir=download_dir,
+                                                    **kwargs)
+    else:
+        try:
+            tokenizer = AutoTokenizer.from_pretrained(
+                tokenizer_name,
+                *args,
+                trust_remote_code=trust_remote_code,
+                revision=revision,
+                **kwargs,
+            )
+        except ValueError as e:
+            # If the error pertains to the tokenizer class not existing or not
+            # currently being imported,
+            # suggest using the --trust-remote-code flag.
+            if not trust_remote_code and (
+                    "does not exist or is not currently imported." in str(e)
+                    or "requires you to execute the tokenizer file" in str(e)):
+                err_msg = ("Failed to load the tokenizer. If the tokenizer "
+                           "is a custom tokenizer not yet available in the "
+                           "HuggingFace transformers library, consider "
+                           "setting `trust_remote_code=True` in LLM or using "
+                           "the `--trust-remote-code` flag in the CLI.")
+                raise RuntimeError(err_msg) from e
+            else:
+                raise e
+
+        # The special_tokens in tokenizer should also be
+        # controlled by do_lower_case in encoder_config
+        encoder_config = get_sentence_transformer_tokenizer_config(
+            tokenizer_name, revision)
+        if isinstance(encoder_config, dict) and encoder_config.get(
+                "do_lower_case", False):
+            special_tokens_map = {
+                k: v.lower()
+                for k, v in tokenizer.special_tokens_map.items()
+            }
+            tokenizer.add_special_tokens(special_tokens_map)
+
+        if not isinstance(tokenizer, PreTrainedTokenizerFast):
+            logger.warning(
+                "Using a slow tokenizer. This might cause a significant "
+                "slowdown. Consider using a fast tokenizer instead.")
+        tokenizer = get_cached_tokenizer(tokenizer)
+
+    return tokenizer
+
+
+cached_get_tokenizer = lru_cache(get_tokenizer)
+
+
+def cached_tokenizer_from_config(
+    model_config: ModelConfig,
+    **kwargs: Any,
+):
+    return cached_get_tokenizer(
+        model_config.tokenizer,
+        tokenizer_mode=model_config.tokenizer_mode,
+        revision=model_config.tokenizer_revision,
+        trust_remote_code=model_config.trust_remote_code,
+        **kwargs,
+    )
+
+
+def init_tokenizer_from_configs(model_config: ModelConfig):
+    runner_type = model_config.runner_type
+    if runner_type == "generate" or runner_type == "draft":
+        truncation_side = "left"
+    elif runner_type == "pooling":
+        truncation_side = "right"
+    else:
+        assert_never(runner_type)
+
+    return get_tokenizer(
+        model_config.tokenizer,
+        tokenizer_mode=model_config.tokenizer_mode,
+        trust_remote_code=model_config.trust_remote_code,
+        revision=model_config.tokenizer_revision,
+        truncation_side=truncation_side,
+    )

vllm/transformers_utils/tokenizer_base.py

@@ -0,0 +1,154 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import importlib
+from abc import ABC, abstractmethod
+from typing import TYPE_CHECKING, Any, Optional, Union
+
+if TYPE_CHECKING:
+    from vllm.entrypoints.chat_utils import ChatCompletionMessageParam
+
+
+class TokenizerBase(ABC):
+
+    @property
+    @abstractmethod
+    def all_special_tokens_extended(self) -> list[str]:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def all_special_tokens(self) -> list[str]:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def all_special_ids(self) -> list[int]:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def bos_token_id(self) -> int:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def eos_token_id(self) -> int:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def sep_token(self) -> str:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def pad_token(self) -> str:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def is_fast(self) -> bool:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def vocab_size(self) -> int:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def max_token_id(self) -> int:
+        raise NotImplementedError()
+
+    @property
+    @abstractmethod
+    def truncation_side(self) -> str:
+        raise NotImplementedError()
+
+    def __len__(self) -> int:
+        return self.vocab_size
+
+    @abstractmethod
+    def __call__(
+        self,
+        text: Union[str, list[str], list[int]],
+        text_pair: Optional[str] = None,
+        add_special_tokens: bool = False,
+        truncation: bool = False,
+        max_length: Optional[int] = None,
+    ):
+        raise NotImplementedError()
+
+    @abstractmethod
+    def get_vocab(self) -> dict[str, int]:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def get_added_vocab(self) -> dict[str, int]:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def encode_one(
+        self,
+        text: str,
+        truncation: bool = False,
+        max_length: Optional[int] = None,
+    ) -> list[int]:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def encode(self,
+               text: str,
+               truncation: Optional[bool] = None,
+               max_length: Optional[int] = None,
+               add_special_tokens: Optional[bool] = None) -> list[int]:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def apply_chat_template(self,
+                            messages: list["ChatCompletionMessageParam"],
+                            tools: Optional[list[dict[str, Any]]] = None,
+                            **kwargs) -> list[int]:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def convert_tokens_to_string(self, tokens: list[str]) -> str:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def decode(self,
+               ids: Union[list[int], int],
+               skip_special_tokens: bool = True) -> str:
+        raise NotImplementedError()
+
+    @abstractmethod
+    def convert_ids_to_tokens(
+        self,
+        ids: list[int],
+        skip_special_tokens: bool = True,
+    ) -> list[str]:
+        raise NotImplementedError()
+
+
+class TokenizerRegistry:
+    # Tokenizer name -> (tokenizer module, tokenizer class)
+    REGISTRY: dict[str, tuple[str, str]] = {}
+
+    @staticmethod
+    def register(name: str, module: str, class_name: str) -> None:
+        TokenizerRegistry.REGISTRY[name] = (module, class_name)
+
+    @staticmethod
+    def get_tokenizer(
+        tokenizer_name: str,
+        *args,
+        **kwargs,
+    ) -> TokenizerBase:
+        tokenizer_cls = TokenizerRegistry.REGISTRY.get(tokenizer_name)
+        if tokenizer_cls is None:
+            raise ValueError(f"Tokenizer {tokenizer_name} not found.")
+
+        tokenizer_module = importlib.import_module(tokenizer_cls[0])
+        class_ = getattr(tokenizer_module, tokenizer_cls[1])
+        return class_.from_pretrained(*args, **kwargs)

vllm/transformers_utils/tokenizers/__init__.py

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from .mistral import (MistralTokenizer, maybe_serialize_tool_calls,
+                      truncate_tool_call_ids, validate_request_params)
+
+__all__ = [
+    "MistralTokenizer", "maybe_serialize_tool_calls", "truncate_tool_call_ids",
+    "validate_request_params"
+]

vllm/transformers_utils/tokenizers/mistral.py

@@ -0,0 +1,521 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import os
+from pathlib import Path
+from typing import TYPE_CHECKING, Any, Optional, Union, cast
+
+import huggingface_hub
+import regex as re
+from huggingface_hub import HfApi, hf_hub_download
+from transformers.tokenization_utils_base import BatchEncoding
+
+from vllm.logger import init_logger
+from vllm.transformers_utils.tokenizer_base import TokenizerBase
+from vllm.utils import is_list_of
+
+if TYPE_CHECKING:
+    # make sure `mistral_common` is lazy imported,
+    # so that users who only use non-mistral models
+    # will not be bothered by the dependency.
+    from mistral_common.protocol.instruct.request import ChatCompletionRequest
+    from mistral_common.tokens.tokenizers.mistral import (
+        MistralTokenizer as PublicMistralTokenizer)
+
+    from vllm.entrypoints.chat_utils import ChatCompletionMessageParam
+
+logger = init_logger(__name__)
+
+
+def maybe_serialize_tool_calls(request: "ChatCompletionRequest"):
+    # SEE: https://github.com/vllm-project/vllm/pull/9951
+    # Credits go to: @gcalmettes
+    # NOTE: There is currently a bug in pydantic where attributes
+    # declared as iterables are replaced in in the instances by
+    # pydantic-core ValidatorIterator instance. In particular, this
+    # affects tool_calls defined in ChatCompletionAssistantMessageParam
+    # model:
+    # see:
+    #   - https://github.com/pydantic/pydantic/issues/9467
+    # As a result, tool_calls from assistant messages are never
+    # deserialized in the request object if the tool_calls iterator is
+    # not consumed. This affect messages passed to the MistralTokenizer
+    # since no chat template is applied and therefore the tools_calls
+    # iterator is not directly consumed.
+    # Issue is tracked on Pydantic side, with resolution planned for
+    # v2.11 release. In the meantime, the official workaround is to
+    # consume the iterator so the tool_calls are correctly deserialized
+    # in the OpenAI ChatCompletionAssistantMessageParam object
+    # https://github.com/pydantic/pydantic/issues/9467#issuecomment-2442097291 # noqa: E501
+    # Official Pydantic Issues:
+    #   - https://github.com/pydantic/pydantic/issues/9541
+    # TODO: remove when pydantic v2.11 is released
+    for i, message in enumerate(request.messages):
+        if message.get("role") == 'assistant':
+            tool_calls_validator = message.get("tool_calls", ().__iter__())
+            validated_tool_calls = []
+            while True:
+                try:
+                    tool_call = next(tool_calls_validator)  # type: ignore
+                    validated_tool_calls.append(tool_call)
+                except StopIteration:
+                    break
+
+            request.messages[i]["tool_calls"] = validated_tool_calls
+
+
+def truncate_tool_call_ids(request: "ChatCompletionRequest"):
+    """Truncates tool call IDs for Mistral's ID requirements."""
+    for i, message in enumerate(request.messages):
+        if message.get("role") == 'assistant':
+            tool_calls = message.get("tool_calls", [])
+            for tool_call in tool_calls:
+                if len(tool_call["id"]) > 9:
+                    logger.warning(
+                        "Truncating tool call ID: %s to %s",
+                        tool_call["id"],
+                        tool_call["id"][-9:],
+                    )
+                    tool_call["id"] = tool_call["id"][-9:]
+
+            request.messages[i]["tool_calls"] = tool_calls
+
+        elif message.get("role") in {"tool_results", "tool"}:
+            if "tool_call_id" in message:
+                tool_call_id = message["tool_call_id"]
+
+                if len(tool_call_id) > 9:
+                    logger.warning(
+                        "Truncating tool_call_id: %s to %s",
+                        tool_call_id,
+                        tool_call_id[-9:],
+                    )
+                    tool_call_id = tool_call_id[-9:]
+                request.messages[i]["tool_call_id"] = tool_call_id
+
+
+def validate_request_params(request: "ChatCompletionRequest"):
+    if (request.skip_special_tokens is not None
+            and not request.skip_special_tokens):
+        raise ValueError("skip_special_tokens=False is not supported "
+                         "for Mistral tokenizers.")
+
+
+def list_local_repo_files(repo_id: str, revision: Optional[str]) -> list[str]:
+    repo_cache = os.path.join(
+        huggingface_hub.constants.HF_HUB_CACHE,
+        huggingface_hub.constants.REPO_ID_SEPARATOR.join(
+            ["models", *repo_id.split("/")]))
+
+    if revision is None:
+        revision_file = os.path.join(repo_cache, "refs", "main")
+        if os.path.isfile(revision_file):
+            with open(revision_file) as file:
+                revision = file.read()
+
+    if revision:
+        revision_dir = os.path.join(repo_cache, "snapshots", revision)
+        if os.path.isdir(revision_dir):
+            return os.listdir(revision_dir)
+
+    return []
+
+
+def find_tokenizer_file(files: list[str]):
+    file_pattern = re.compile(
+        r"^tokenizer\.model\.v.*$|^tekken\.json$|^tokenizer\.mm\.model\.v.*$")
+
+    matched_files = [file for file in files if file_pattern.match(file)]
+    if len(matched_files) > 1:
+        raise OSError(
+            f"Found {len(matched_files)} files matching the "
+            f"pattern: `{file_pattern.pattern}`. Make sure only one Mistral "
+            f"tokenizer is present in {files}.")
+    elif len(matched_files) == 0:
+        raise OSError(
+            f"Found {len(matched_files)} files matching the "
+            f"pattern: `{file_pattern.pattern}`. Make sure that a Mistral "
+            f"tokenizer is present in {files}.")
+
+    return matched_files[0]
+
+
+def _aggregate_content(content: list) -> list[dict[str, Any]]:
+    aggregated_content: list[dict[str, Any]] = []
+    for chunk in content:
+        if chunk.get("type"
+                     ) == "text" and aggregated_content and aggregated_content[
+                         -1].get("type") == "text":
+            aggregated_content[-1]["text"] += "\n\n" + chunk.get("text")
+        else:
+            aggregated_content.append(chunk)
+    if len(aggregated_content) == 1 and aggregated_content[0].get(
+            "type") == "text":
+        content = aggregated_content[0]["text"]
+    return content
+
+
+def make_mistral_chat_completion_request(
+        messages: list["ChatCompletionMessageParam"],
+        tools: Optional[list[dict[str,
+                                  Any]]] = None) -> "ChatCompletionRequest":
+    last_message = cast(dict[str, Any], messages[-1])
+    if last_message["role"] == "assistant":
+        last_message["prefix"] = True
+
+    # mistral-common requires AssistantMessage content to be string [1].
+    #
+    # [1]: https://github.com/mistralai/mistral-common/blob/f4a06998b75ed78bbf5aaf569590b772ea26c9f6/src/mistral_common/protocol/instruct/messages.py#L80
+    for message in messages:
+        # Remove reasoning_content as unsupported by Mistral
+        _ = message.pop("reasoning_content", None)  # type: ignore
+
+        # Convert list text content to string
+        if message.get("role") in ("assistant", "tool"):
+            content: Any = message.get("content")
+            if isinstance(content, list):
+                content = _aggregate_content(content)
+            message["content"] = content
+
+    # The Mistral client, in comparison to the OpenAI client, requires the
+    # "parameters" dict and the "description" string to be present
+    # even if they are empty.
+    if tools:
+        for function in [
+                tool["function"] for tool in tools
+                if tool["type"] == "function"
+        ]:
+            if function.get("parameters") is None:
+                function["parameters"] = {}
+            if function.get("description") is None:
+                function["description"] = ""
+
+    from mistral_common.protocol.instruct.request import ChatCompletionRequest
+    return ChatCompletionRequest(messages=messages,
+                                 tools=tools)  # type: ignore[type-var]
+
+
+class MistralTokenizer(TokenizerBase):
+
+    def __init__(self, tokenizer: "PublicMistralTokenizer") -> None:
+        self.mistral = tokenizer
+        self.instruct = tokenizer.instruct_tokenizer
+        _mistral_version_str = self.instruct.tokenizer.version.value
+        self.version: int = int(_mistral_version_str.split("v")[-1])
+
+        tokenizer_ = tokenizer.instruct_tokenizer.tokenizer
+        from mistral_common.tokens.tokenizers.base import SpecialTokenPolicy
+        from mistral_common.tokens.tokenizers.tekken import Tekkenizer
+
+        self.is_tekken = isinstance(tokenizer_, Tekkenizer)
+        from mistral_common.tokens.tokenizers.sentencepiece import (
+            SentencePieceTokenizer)
+        self.is_spm = isinstance(tokenizer_, SentencePieceTokenizer)
+        self._special_token_policy = (SpecialTokenPolicy.IGNORE
+                                      if self.is_tekken else None)
+        if not (self.is_tekken or self.is_spm):
+            raise TypeError(f"Unsupported tokenizer: {type(tokenizer_)}")
+
+        self._vocab = tokenizer_.vocab()
+        # Convert to a dict[str, int] to match protocol, but this is a lossy
+        # conversion. There may be multiple token ids that decode to the same
+        # string due to partial UTF-8 byte sequences being converted to <20>
+        self._vocab_dict = {
+            token: idx
+            for idx, token in enumerate(self._vocab)
+        }
+        self.tokenizer = tokenizer_
+        self._max_token_id = self.vocab_size - 1
+
+    @classmethod
+    def from_pretrained(cls,
+                        path_or_repo_id: str,
+                        *,
+                        revision: Optional[str] = None) -> "MistralTokenizer":
+        if not Path(path_or_repo_id).exists():
+            assert len(path_or_repo_id.split("/")) == 2, (
+                "You have either provided a non-existent path: "
+                "{path_or_repo_id} or an invalid HF Hub repo id.")
+            tokenizer_file = cls._download_mistral_tokenizer_from_hf(
+                path_or_repo_id, revision)
+        elif Path(path_or_repo_id).is_dir():
+            tokenizer_file_name = find_tokenizer_file(
+                os.listdir(path_or_repo_id))
+            tokenizer_file = str(Path(path_or_repo_id) / tokenizer_file_name)
+        else:
+            assert Path(
+                path_or_repo_id).is_file(), f"Invalid path: {path_or_repo_id}"
+            tokenizer_file = str(Path(path_or_repo_id))
+
+        from mistral_common.tokens.tokenizers.mistral import (
+            MistralTokenizer as PublicMistralTokenizer)
+        mistral_tokenizer = PublicMistralTokenizer.from_file(tokenizer_file)
+        return cls(mistral_tokenizer)
+
+    @staticmethod
+    def _download_mistral_tokenizer_from_hf(tokenizer_name: str,
+                                            revision: Optional[str]) -> str:
+        try:
+            hf_api = HfApi()
+            files = hf_api.list_repo_files(repo_id=tokenizer_name,
+                                           revision=revision)
+        except ConnectionError as exc:
+            files = list_local_repo_files(repo_id=tokenizer_name,
+                                          revision=revision)
+
+            if len(files) == 0:
+                raise exc
+
+        filename = find_tokenizer_file(files)
+
+        tokenizer_file = hf_hub_download(tokenizer_name,
+                                         filename=filename,
+                                         revision=revision)
+        return tokenizer_file
+
+    # the following attributes are set to fit vLLM's design and are used
+    # by the structured output backends.
+    @property
+    def all_special_tokens_extended(self) -> list[str]:
+        from mistral_common.tokens.tokenizers.base import SpecialTokens
+
+        # tekken defines its own extended special tokens list
+        if hasattr(self.tokenizer, "SPECIAL_TOKENS"):
+            special_tokens = self.tokenizer.SPECIAL_TOKENS
+        else:
+            special_tokens = list(SpecialTokens)
+        return [
+            s.value if isinstance(s, SpecialTokens) else s
+            for s in special_tokens
+        ]
+
+    @property
+    def all_special_tokens(self) -> list[str]:
+        return self.all_special_tokens_extended
+
+    @property
+    def all_special_ids(self) -> list[int]:
+        return [
+            self.all_special_tokens.index(t) for t in self.all_special_tokens
+        ]
+
+    @property
+    def bos_token_id(self) -> int:
+        return self.tokenizer.bos_id
+
+    @property
+    def eos_token_id(self) -> int:
+        return self.tokenizer.eos_id
+
+    @property
+    def sep_token(self) -> str:
+        raise NotImplementedError()
+
+    @property
+    def pad_token(self) -> str:
+        raise NotImplementedError()
+
+    @property
+    def is_fast(self) -> bool:
+        return True
+
+    @property
+    def vocab_size(self) -> int:
+        return len(self._vocab)
+
+    @property
+    def max_token_id(self) -> int:
+        return self._max_token_id
+
+    @property
+    def truncation_side(self) -> str:
+        raise NotImplementedError()
+
+    def __len__(self) -> int:
+        return self.vocab_size
+
+    def __call__(
+        self,
+        text: Union[str, list[str], list[int]],
+        text_pair: Optional[str] = None,
+        add_special_tokens: bool = False,
+        truncation: bool = False,
+        max_length: Optional[int] = None,
+    ):
+        input_ids: Union[list[int], list[list[int]]]
+        # For list[str], original prompt text
+        if is_list_of(text, str):
+            input_ids_: list[list[int]] = []
+            for p in text:
+                each_input_ids = self.encode_one(p, truncation, max_length)
+                input_ids_.append(each_input_ids)
+            input_ids = input_ids_
+        # For list[int], apply chat template output, already tokens.
+        elif is_list_of(text, int):
+            input_ids = text
+        # For str, single prompt text
+        else:
+            input_ids = self.encode_one(text, truncation, max_length)
+        return BatchEncoding({"input_ids": input_ids})
+
+    def get_vocab(self) -> dict[str, int]:
+        # NB: the dictionary form of the vocabulary collapses token ids that map
+        # to the same string but have different bytes
+        return self._vocab_dict
+
+    def get_added_vocab(self) -> dict[str, int]:
+        # Mistral tokenizers have no added vocabulary
+        return {}
+
+    def encode_one(
+        self,
+        text: str,
+        truncation: bool = False,
+        max_length: Optional[int] = None,
+    ) -> list[int]:
+        # Mistral Tokenizers should not add special tokens
+        input_ids = self.encode(text)
+
+        if truncation:
+            input_ids = input_ids[:max_length]
+        return input_ids
+
+    def encode(self,
+               text: str,
+               truncation: Optional[bool] = None,
+               max_length: Optional[int] = None,
+               add_special_tokens: Optional[bool] = None) -> list[int]:
+        # `encode` should only be used for prompt completion
+        # it should never be used for chat_completion.
+        # For chat completion use `apply_chat_template`
+        if add_special_tokens is not None:
+            return self.tokenizer.encode(text,
+                                         bos=add_special_tokens,
+                                         eos=add_special_tokens)
+        else:
+            return self.tokenizer.encode(text, bos=True, eos=False)
+
+    def apply_chat_template(self,
+                            messages: list["ChatCompletionMessageParam"],
+                            tools: Optional[list[dict[str, Any]]] = None,
+                            **kwargs) -> list[int]:
+
+        request = make_mistral_chat_completion_request(messages, tools)
+        encoded = self.mistral.encode_chat_completion(request)
+
+        # encode-decode to get clean prompt
+        return encoded.tokens
+
+    def convert_tokens_to_string(self, tokens: list[str]) -> str:
+        from mistral_common.tokens.tokenizers.base import SpecialTokens
+        if self.is_tekken:
+            tokens = [
+                t for t in tokens
+                if (t is SpecialTokens.tool_calls
+                    or t not in self.tokenizer._all_special_tokens)
+            ]
+
+            if any(isinstance(t, bytes) for t in tokens):
+                # we need to encode and decode all tokens again
+                shift = self.tokenizer.num_special_tokens
+
+                def _token_to_id(t: str):
+                    t_bytes = t.encode("utf-8") \
+                        if not isinstance(t, bytes) else t
+                    try:
+                        return shift + \
+                            self.tokenizer._tekken_token2id_nospecial[t_bytes]
+                    except KeyError:
+                        logger.warning(
+                            "Failed to convert token %s to id,"
+                            " replacing with <unk>", t_bytes)
+                        return self.tokenizer.unk_id
+
+                ids = [_token_to_id(t) for t in tokens]
+                decoded = self.tokenizer.decode(ids,
+                                                self._special_token_policy)
+            else:
+                decoded = "".join(tokens)
+        else:
+            # make sure certain special tokens like Tool calls are
+            # not decoded
+            special_tokens = {SpecialTokens.tool_calls}
+            regular_tokens: list[str] = []
+            decoded_list = []
+
+            for token in tokens:
+                if token in special_tokens:
+                    if regular_tokens:
+                        decoded_list.append(
+                            self.tokenizer.decode(regular_tokens,
+                                                  self._special_token_policy))
+                        regular_tokens = []
+                    decoded_list.append(token)
+                else:
+                    regular_tokens.append(token)
+
+            if regular_tokens:
+                decoded_list.append(
+                    self.tokenizer.decode(regular_tokens,
+                                          self._special_token_policy))
+
+            decoded = ''.join(decoded_list)
+
+        return decoded
+
+    def decode(self,
+               ids: Union[list[int], int],
+               skip_special_tokens: bool = True) -> str:
+        assert (
+            skip_special_tokens
+        ), "skip_special_tokens=False is not supported for Mistral tokenizers."
+
+        if isinstance(ids, int):
+            ids = [ids]
+        return self.tokenizer.decode(ids, self._special_token_policy)
+
+    def convert_ids_to_tokens(
+        self,
+        ids: list[int],
+        skip_special_tokens: bool = True,
+    ) -> list[str]:
+        from mistral_common.tokens.tokenizers.base import SpecialTokens
+        from mistral_common.tokens.tokenizers.instruct import (
+            InstructTokenizerV13)
+
+        # TODO(Patrick) - potentially allow special tokens to not be skipped
+        assert (
+            skip_special_tokens
+        ), "skip_special_tokens=False is not supported for Mistral tokenizers."
+
+        assert self.is_tekken or self.is_spm, type(self.tokenizer)
+
+        if self.is_tekken:
+            # skip special tokens except tool call and think tokens
+            non_skip_special_tokens = {
+                self.tokenizer.get_control_token(SpecialTokens.tool_calls)
+            }
+            if isinstance(self.instruct, InstructTokenizerV13):
+                if self.instruct.BEGIN_THINK:
+                    non_skip_special_tokens.add(self.instruct.BEGIN_THINK)
+                if self.instruct.END_THINK:
+                    non_skip_special_tokens.add(self.instruct.END_THINK)
+            ids = [
+                i for i in ids if i > self.tokenizer.num_special_tokens
+                or i in non_skip_special_tokens
+            ]
+
+        tokens = [self.tokenizer.id_to_piece(id) for id in ids]
+
+        if any("<EFBFBD>" in t for t in tokens) and self.is_tekken:
+            # if a decoded token contains the replacement character, then the
+            # token has an incomplete UTF-8 character so we must use bytes
+            # See: https://github.com/vllm-project/vllm/pull/8640
+            #      https://github.com/vllm-project/vllm/pull/9625
+            # if underlying tokenizeir is sentencepiece, we just add "<22>"
+            tokens = [
+                self.tokenizer.id_to_byte_piece(id, self._special_token_policy)
+                for id in ids
+            ]
+
+        return tokens

vllm/transformers_utils/utils.py

@@ -0,0 +1,108 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import json
+import struct
+from functools import cache
+from os import PathLike
+from pathlib import Path
+from typing import Any, Optional, Union
+
+from vllm.envs import VLLM_MODEL_REDIRECT_PATH
+from vllm.logger import init_logger
+
+logger = init_logger(__name__)
+
+
+def is_s3(model_or_path: str) -> bool:
+    return model_or_path.lower().startswith('s3://')
+
+
+def check_gguf_file(model: Union[str, PathLike]) -> bool:
+    """Check if the file is a GGUF model."""
+    model = Path(model)
+    if not model.is_file():
+        return False
+    elif model.suffix == ".gguf":
+        return True
+
+    try:
+        with model.open("rb") as f:
+            header = f.read(4)
+
+        return header == b"GGUF"
+    except Exception as e:
+        logger.debug("Error reading file %s: %s", model, e)
+        return False
+
+
+def modelscope_list_repo_files(
+    repo_id: str,
+    revision: Optional[str] = None,
+    token: Union[str, bool, None] = None,
+) -> list[str]:
+    """List files in a modelscope repo."""
+    from modelscope.hub.api import HubApi
+    api = HubApi()
+    api.login(token)
+    # same as huggingface_hub.list_repo_files
+    files = [
+        file['Path'] for file in api.get_model_files(
+            model_id=repo_id, revision=revision, recursive=True)
+        if file['Type'] == 'blob'
+    ]
+    return files
+
+
+def _maybe_json_dict(path: Union[str, PathLike]) -> dict[str, str]:
+    with open(path) as f:
+        try:
+            return json.loads(f.read())
+        except Exception:
+            return dict[str, str]()
+
+
+def _maybe_space_split_dict(path: Union[str, PathLike]) -> dict[str, str]:
+    parsed_dict = dict[str, str]()
+    with open(path) as f:
+        for line in f.readlines():
+            try:
+                model_name, redirect_name = line.strip().split()
+                parsed_dict[model_name] = redirect_name
+            except Exception:
+                pass
+    return parsed_dict
+
+
+@cache
+def maybe_model_redirect(model: str) -> str:
+    """
+    Use model_redirect to redirect the model name to a local folder.
+
+    :param model: hf model name
+    :return: maybe redirect to a local folder
+    """
+
+    model_redirect_path = VLLM_MODEL_REDIRECT_PATH
+
+    if not model_redirect_path:
+        return model
+
+    if not Path(model_redirect_path).exists():
+        return model
+
+    redirect_dict = (_maybe_json_dict(model_redirect_path)
+                     or _maybe_space_split_dict(model_redirect_path))
+    if (redirect_model := redirect_dict.get(model)):
+        logger.info("model redirect: [ %s ] -> [ %s ]", model, redirect_model)
+        return redirect_model
+
+    return model
+
+
+def parse_safetensors_file_metadata(
+        path: Union[str, PathLike]) -> dict[str, Any]:
+    with open(path, "rb") as f:
+        length_of_metadata = struct.unpack('<Q', f.read(8))[0]
+        metadata = json.loads(f.read(length_of_metadata).decode('utf-8'))
+        return metadata