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Model: NbAiLab/borealis-270m-instruct-preview Source: Original Platform
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README.md
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README.md
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---
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license: gemma
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datasets:
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- NbAiLab/aurora-sft-2512-filtered
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language:
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- 'no'
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- nb
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- nn
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base_model:
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- google/gemma-3-270m-it
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pipeline_tag: text-generation
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library_name: transformers
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tags:
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- conversational
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- instruct
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- experimental
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---
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# Borealis 270M Instruct (Preview)
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Release: Jan 31st, 2026.
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## Model summary
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**NbAiLab/borealis-270m-instruct-preview** is a **270M-parameter** instruction-tuned **preview** model intended for early testing and feedback. It is an **experiment** and should be treated as pre-release quality.
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This model is based on [**google/gemma-3-270m-it**](https://huggingface.co/google/gemma-3-270m-it), and fine-tuned on textual instructions only.
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| Size | Transformers | GGUF (quants: `q8_0`, `f16`, `bf16`) | MLX |
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|---:|---|---|---|
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| 270M | [NbAiLab/borealis-270m-instruct-preview](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview) | [NbAiLab/borealis-270m-instruct-preview-gguf](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-gguf) | [NbAiLab/borealis-270m-instruct-preview-mlx](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-mlx) (32-bit)<br>[NbAiLab/borealis-270m-instruct-preview-mlx-8bits](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-mlx-8bits) (8-bit) |
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| 1B | [NbAiLab/borealis-1b-instruct-preview](https://huggingface.co/NbAiLab/borealis-1b-instruct-preview) | [NbAiLab/borealis-1b-instruct-preview-gguf](https://huggingface.co/NbAiLab/borealis-1b-instruct-preview-gguf) | [NbAiLab/borealis-1b-instruct-preview-mlx](https://huggingface.co/NbAiLab/borealis-1b-instruct-preview-mlx) (32-bit)<br>[NbAiLab/borealis-1b-instruct-preview-mlx-8bits](https://huggingface.co/NbAiLab/borealis-1b-instruct-preview-mlx-8bits) (8-bit) |
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| 4B | [NbAiLab/borealis-4b-instruct-preview](https://huggingface.co/NbAiLab/borealis-4b-instruct-preview) | [NbAiLab/borealis-4b-instruct-preview-gguf](https://huggingface.co/NbAiLab/borealis-4b-instruct-preview-gguf) | [NbAiLab/borealis-4b-instruct-preview-mlx](https://huggingface.co/NbAiLab/borealis-4b-instruct-preview-mlx) (32-bit)<br>[NbAiLab/borealis-4b-instruct-preview-mlx-8bits](https://huggingface.co/NbAiLab/borealis-4b-instruct-preview-mlx-8bits) (8-bit) |
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| 12B | [NbAiLab/borealis-12b-instruct-preview](https://huggingface.co/NbAiLab/borealis-12b-instruct-preview) | [NbAiLab/borealis-12b-instruct-preview-gguf](https://huggingface.co/NbAiLab/borealis-12b-instruct-preview-gguf) | [NbAiLab/borealis-12b-instruct-preview-mlx](https://huggingface.co/NbAiLab/borealis-12b-instruct-preview-mlx) (32-bit)<br>[NbAiLab/borealis-12b-instruct-preview-mlx-8bits](https://huggingface.co/NbAiLab/borealis-12b-instruct-preview-mlx-8bits) (8-bit) |
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| 27B | [NbAiLab/borealis-27b-instruct-preview](https://huggingface.co/NbAiLab/borealis-27b-instruct-preview) | [NbAiLab/borealis-27b-instruct-preview-gguf](https://huggingface.co/NbAiLab/borealis-27b-instruct-preview-gguf) | [NbAiLab/borealis-27b-instruct-preview-mlx](https://huggingface.co/NbAiLab/borealis-27b-instruct-preview-mlx) (32-bit)<br>[NbAiLab/borealis-27b-instruct-preview-mlx-8bits](https://huggingface.co/NbAiLab/borealis-27b-instruct-preview-mlx-8bits) (8-bit) |
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## Training data
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Supervised fine-tuning (SFT) uses **NbAiLab/aurora-sft-2512** (not released yet).
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## ⚠️ Safety / alignment disclaimer (important)
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This is a **preview experiment** and **has not been safety-aligned yet**. The model may produce **harmful, biased, or insensitive** outputs (including content that is offensive, unsafe, or inappropriate). Do not use it for safety-critical or high-stakes applications, and add your own safety mitigations if deploying.
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## Intended use
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- Norwegian-centric assistant-style tasks (e.g., drafting, summarization, Q&A, light reasoning).
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- Assesstment of Norwegian writing style and quality.
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- Early evaluation of behavior, language coverage (Norwegian / Bokmål / Nynorsk), and quality.
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## Limitations
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- Preview quality; outputs may be unstable and may hallucinate.
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- Not aligned for safety; may follow harmful instructions or generate problematic content (see disclaimer above).
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## Weights & formats
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### Transformers (original)
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- **NbAiLab/borealis-270m-instruct-preview** (safetensors).
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### GGUF quantizations
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Available in [**NbAiLab/borealis-270m-instruct-preview-gguf**](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-gguf):
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- `model-q8_0.gguf`
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- `model-f16.gguf`
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- `model-bf16.gguf`
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Use:
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```bash
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ollama run hf.co/NbAiLab/borealis-270m-instruct-preview-gguf:BF16
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```
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### MLX (Apple Silicon)
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Available in [**NbAiLab/borealis-270m-instruct-preview-mlx**](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-mlx) and quantized to [8 bits](https://huggingface.co/NbAiLab/borealis-270m-instruct-preview-mlx-8bits).
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Use:
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```bash
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# Install MLX LM
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uv tool install mlx-lm
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# Interactive chat REPL
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mlx_lm.chat --model "NbAiLab/borealis-270m-instruct-preview-mlx"
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```
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## Acknowledgements
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Thanks to the **Gemma** team at Google for releasing Gemma 3 and to everyone contributing feedback on this preview.
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added_tokens.json
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{
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"<image_soft_token>": 262144
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}
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chat_template.jinja
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{{ bos_token }}
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{%- if messages[0]['role'] == 'system' -%}
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{%- if messages[0]['content'] is string -%}
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{%- set first_user_prefix = messages[0]['content'] + '
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' -%}
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{%- else -%}
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{%- set first_user_prefix = messages[0]['content'][0]['text'] + '
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' -%}
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{%- endif -%}
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{%- set loop_messages = messages[1:] -%}
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{%- else -%}
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{%- set first_user_prefix = "" -%}
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{%- set loop_messages = messages -%}
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{%- endif -%}
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{%- for message in loop_messages -%}
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{%- if (message['role'] == 'user') != (loop.index0 % 2 == 0) -%}
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{{ raise_exception("Conversation roles must alternate user/assistant/user/assistant/...") }}
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{%- endif -%}
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{%- if (message['role'] == 'assistant') -%}
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{%- set role = "model" -%}
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{%- else -%}
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{%- set role = message['role'] -%}
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{%- endif -%}
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{{ '<start_of_turn>' + role + '
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' + (first_user_prefix if loop.first else "") }}
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{%- if message['content'] is string -%}
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{{ message['content'] | trim }}
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{%- elif message['content'] is iterable -%}
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{%- for item in message['content'] -%}
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{%- if item['type'] == 'image' -%}
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{{ '<start_of_image>' }}
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{%- elif item['type'] == 'text' -%}
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{{ item['text'] | trim }}
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{%- endif -%}
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{%- endfor -%}
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{%- else -%}
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{{ raise_exception("Invalid content type") }}
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{%- endif -%}
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{{ '<end_of_turn>
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' }}
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{%- endfor -%}
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{%- if add_generation_prompt -%}
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{{'<start_of_turn>model
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'}}
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{%- endif -%}
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config.json
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config.json
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{
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"_sliding_window_pattern": 6,
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"architectures": [
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"Gemma3ForCausalLM"
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],
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"attention_bias": false,
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"attention_dropout": 0.0,
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"attn_logit_softcapping": null,
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"bos_token_id": 2,
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"dtype": "float32",
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"eos_token_id": 106,
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"final_logit_softcapping": null,
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"head_dim": 256,
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"hidden_activation": "gelu_pytorch_tanh",
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"hidden_size": 640,
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"initializer_range": 0.02,
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"intermediate_size": 2048,
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"layer_types": [
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"full_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"full_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"sliding_attention",
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"full_attention"
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"max_position_embeddings": 32768,
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"model_type": "gemma3_text",
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"num_attention_heads": 4,
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"num_hidden_layers": 18,
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"num_key_value_heads": 1,
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"pad_token_id": 0,
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"query_pre_attn_scalar": 256,
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"rms_norm_eps": 1e-06,
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"rope_local_base_freq": 10000.0,
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"rope_scaling": null,
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"rope_theta": 1000000.0,
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"sliding_window": 512,
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"transformers_version": "4.57.1",
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"use_bidirectional_attention": false,
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"use_cache": false,
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"vocab_size": 262144
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}
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generation_config.json
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{
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"bos_token_id": 2,
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"cache_implementation": "hybrid",
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"do_sample": true,
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"eos_token_id": [
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"pad_token_id": 0,
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"top_k": 64,
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"top_p": 0.95,
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"transformers_version": "4.57.1"
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}
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model.safetensors
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model.safetensors
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version https://git-lfs.github.com/spec/v1
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oid sha256:8eabd69c01d932fe65dfd6c46964f2e4ec10f73a1fbdc296ab6b3e58fe4c6003
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size 1072419256
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special_tokens_map.json
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special_tokens_map.json
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{
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"boi_token": "<start_of_image>",
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"bos_token": {
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"content": "<bos>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"single_word": false
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},
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"eoi_token": "<end_of_image>",
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"eos_token": {
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"content": "<end_of_turn>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"single_word": false
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},
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"image_token": "<image_soft_token>",
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"pad_token": {
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"content": "<pad>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"single_word": false
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},
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"unk_token": {
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"content": "<unk>",
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"lstrip": false,
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"normalized": false,
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"rstrip": false,
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"single_word": false
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}
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}
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tokenizer.json
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tokenizer.json
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version https://git-lfs.github.com/spec/v1
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oid sha256:4667f2089529e8e7657cfb6d1c19910ae71ff5f28aa7ab2ff2763330affad795
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size 33384568
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tokenizer.model
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tokenizer.model
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version https://git-lfs.github.com/spec/v1
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oid sha256:1299c11d7cf632ef3b4e11937501358ada021bbdf7c47638d13c0ee982f2e79c
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size 4689074
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tokenizer_config.json
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tokenizer_config.json
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