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Model: resect-ai/veritas-0.6B-fact-checker-non-thinking-1.0 Source: Original Platform
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README.md
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---
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base_model: Qwen/Qwen3-0.6B
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tags:
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- transformers
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- factual-grounding
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- fact-checking
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- qwen3
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license: apache-2.0
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language:
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- en
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---
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# About Resect Research Labs
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- Resect Research Labs focuses on improving factual grounding as well as detecting, reducing, and mitigating hallucinations in AI models through proprietary reinforcement learning and novel fine-tuning techniques.
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## Introducing: Veritas-0.6B-Fact-Checker-Non-Thinking-1.0
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- **Veritas-0.6B-Fact-Checker-Non-Thinking-1.0** is built on the **Qwen3 architecture**, starting from [**(Qwen/Qwen3-0.6B)**](https://huggingface.co/Qwen/Qwen3-0.6B). Resect Research Labs has specialized, finetuned, and optimized this model for **fact-checking and factual consistency verification**.
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### Model Performance
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- The performance of this model is evaluated on [LLM-AggreFact](https://huggingface.co/datasets/lytang/LLM-AggreFact) (unseen by this model during training),
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the benchmark is an aggregation of 11 human annotated datasets on fact-checking and grounding.
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### Overall Performance
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- **Veritas-0.6B-Fact-Checker-Non-Thinking-1.0** achieves an **average score of 72.30%**, an improvement of **7.37%** above Qwen3-0.6B in non-thinking mode.
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### Benchmark Details (LLM-AggreFact)
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Balanced Accuracy Scores
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| Model | Size | Avg | CNN | XSum | MediaS | MeetB | WiCE | REVEAL | Claim Verify | Fact Check | Expert QA | LFQA | RAG Truth |
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|------|------|------|------|------|--------|-------|------|--------|--------------|------------|-----------|------|-----------|
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| Qwen3-0.6B (non-thinking) | 0.6B | 64.93 | 57.93 | 66.71 | 57.13 | 62.60 | 67.23 | **86.99** | 59.85 | 72.63 | 56.44 | 70.18 | 56.56 |
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| Veritas-0.6B-Fact-Checker-Non-Thinking-1.0 | 0.6B | **72.30** | **65.84** | **66.75** | **68.45** | **73.47** | **73.43** | 83.32 | **71.89** | **73.45** | **58.66** | **82.57** | **77.49** |
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<sup>**The benchmarks noted here for Veritas-0.6B-Fact-Checker-Non-Thinking-1.0 were performed on the test set and a PR has been submitted to [Minicheck's Library (Pull Request)](https://github.com/Liyan06/MiniCheck/pull/17) to support additional operating modes including this model.**</sup>
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<sup>Note: Performance may vary slightly depending on hardware configuration and vLLM version</sup>
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---
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# Model Usage
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## Scope of Use
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* Veritas-0.6B-Fact-Checker-Non-Thinking model must only be used strictly for the prescribed scoring mode, which generates a binary classification based on the specified template. Any deviation from this intended use may lead to unexpected outputs.
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## Using Minicheck's library [^2]
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**Requires the changes from our Pull Request to be merged, see [^2]**
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Please run the following command to install the **MiniCheck package** and all necessary dependencies.
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```sh
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pip install "minicheck[llm] @ git+https://github.com/Liyan06/MiniCheck.git@main"
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```
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[^2]: Pull Request to [Minicheck's library submitted](https://github.com/Liyan06/MiniCheck/pull/17) awaiting review
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#### Below is a simple use case
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```python
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from minicheck.minicheck import MiniCheck
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import os
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os.environ["CUDA_VISIBLE_DEVICES"] = "0"
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doc = "A group of students gather in the school library to study for their upcoming final exams."
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claim_1 = "The students are preparing for an examination."
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claim_2 = "The students are on vacation."
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chat_kwargs = {'enable_thinking': False}
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scorer = MiniCheck(model_name='resect-ai/veritas-0.6B-fact-checker-non-thinking-1.0', enable_prefix_caching=False, extra_chat_template_kwargs=chat_kwargs, operating_mode="bespoke", max_tokens=1, cache_dir='./ckpts', bypass_model_check=True)
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pred_label, raw_prob, _, _ = scorer.score(docs=[doc, doc], claims=[claim_1, claim_2]) # can set `chunk_size=your-specified-value` here, default to 32K chunk size.
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print(pred_label) # [1, 0]
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print(raw_prob) # [0.9796443054985795, 0.008577403129593576]
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```
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### Test on [LLM-AggreFact](https://huggingface.co/datasets/lytang/LLM-AggreFact) Benchmark [^2]
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```python
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import pandas as pd
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from datasets import load_dataset
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from minicheck.minicheck import MiniCheck
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import os
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os.environ["CUDA_VISIBLE_DEVICES"] = "0"
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# load 30K test data
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df = pd.DataFrame(load_dataset("lytang/LLM-AggreFact")['test'])
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docs = df.doc.values
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claims = df.claim.values
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chat_kwargs = {'enable_thinking': False}
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scorer = MiniCheck(model_name='resect-ai/veritas-0.6B-fact-checker-non-thinking-1.0', enable_prefix_caching=False, extra_chat_template_kwargs=chat_kwargs, operating_mode="bespoke", max_tokens=1, cache_dir='./ckpts', bypass_model_check=True)
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pred_label, raw_prob, _, _ = scorer.score(docs=docs, claims=claims)
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```
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To evaluate the result on the benchmark
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```python
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from sklearn.metrics import balanced_accuracy_score
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df['preds'] = pred_label
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result_df = pd.DataFrame(columns=['Dataset', 'BAcc'])
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for dataset in df.dataset.unique():
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sub_df = df[df.dataset == dataset]
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bacc = balanced_accuracy_score(sub_df.label, sub_df.preds) * 100
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result_df.loc[len(result_df)] = [dataset, bacc]
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result_df.loc[len(result_df)] = ['Average', result_df.BAcc.mean()]
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result_df.round(1)
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```
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[^2]: Pull Request to [Minicheck's library submitted](https://github.com/Liyan06/MiniCheck/pull/17) awaiting review
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# License
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- This model **Veritas-0.6B-Fact-Checker-Non-Thinking-1.0** is bound by the Apache 2.0 license found at https://choosealicense.com/licenses/apache-2.0. By downloading and using this model you agree to the license terms.
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# Acknowledgements
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Model perfected by [Resect Research Labs](https://www.resect.ai/).
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89
chat_template.jinja
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{%- if tools %}
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{{- '<|im_start|>system\n' }}
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{%- if messages[0].role == 'system' %}
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{{- messages[0].content + '\n\n' }}
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{%- endif %}
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{{- "# 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>" }}
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{%- for tool in tools %}
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{{- "\n" }}
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{{- tool | tojson }}
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{%- endfor %}
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{{- "\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" }}
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{%- else %}
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{%- if messages[0].role == 'system' %}
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{{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
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{%- endif %}
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{%- endif %}
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{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
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{%- for message in messages[::-1] %}
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{%- set index = (messages|length - 1) - loop.index0 %}
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{%- if ns.multi_step_tool and message.role == "user" and message.content is string and not(message.content.startswith('<tool_response>') and message.content.endswith('</tool_response>')) %}
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{%- set ns.multi_step_tool = false %}
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{%- set ns.last_query_index = index %}
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{%- endif %}
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{%- endfor %}
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{%- for message in messages %}
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{%- if message.content is string %}
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{%- set content = message.content %}
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{%- else %}
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{%- set content = '' %}
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{%- endif %}
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{%- if (message.role == "user") or (message.role == "system" and not loop.first) %}
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{{- '<|im_start|>' + message.role + '\n' + content + '<|im_end|>' + '\n' }}
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{%- elif message.role == "assistant" %}
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{%- set reasoning_content = '' %}
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{%- if message.reasoning_content is string %}
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{%- set reasoning_content = message.reasoning_content %}
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{%- else %}
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{%- if '</think>' in content %}
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{%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
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{%- set content = content.split('</think>')[-1].lstrip('\n') %}
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{%- endif %}
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{%- endif %}
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{%- if loop.index0 > ns.last_query_index %}
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{%- if loop.last or (not loop.last and reasoning_content) %}
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{{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content.strip('\n') + '\n</think>\n\n' + content.lstrip('\n') }}
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{%- else %}
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{{- '<|im_start|>' + message.role + '\n' + content }}
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{%- endif %}
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{%- else %}
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{{- '<|im_start|>' + message.role + '\n' + content }}
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{%- endif %}
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{%- if message.tool_calls %}
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{%- for tool_call in message.tool_calls %}
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{%- if (loop.first and content) or (not loop.first) %}
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{{- '\n' }}
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{%- endif %}
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{%- if tool_call.function %}
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{%- set tool_call = tool_call.function %}
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{%- endif %}
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{{- '<tool_call>\n{"name": "' }}
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{{- tool_call.name }}
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{{- '", "arguments": ' }}
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{%- if tool_call.arguments is string %}
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{{- tool_call.arguments }}
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{%- else %}
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{{- tool_call.arguments | tojson }}
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{%- endif %}
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{{- '}\n</tool_call>' }}
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{%- endfor %}
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{%- endif %}
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{{- '<|im_end|>\n' }}
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{%- elif message.role == "tool" %}
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{%- if loop.first or (messages[loop.index0 - 1].role != "tool") %}
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{{- '<|im_start|>user' }}
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{%- endif %}
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{{- '\n<tool_response>\n' }}
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{{- content }}
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{{- '\n</tool_response>' }}
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{%- if loop.last or (messages[loop.index0 + 1].role != "tool") %}
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{{- '<|im_end|>\n' }}
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{%- endif %}
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{%- endif %}
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{%- endfor %}
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{%- if add_generation_prompt %}
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{{- '<|im_start|>assistant\n' }}
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{%- if enable_thinking is defined and enable_thinking is false %}
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{{- '<think>\n\n</think>\n\n' }}
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{%- endif %}
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{%- endif %}
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63
config.json
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config.json
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{
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"architectures": [
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"Qwen3ForCausalLM"
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],
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"attention_bias": false,
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"attention_dropout": 0.0,
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"bos_token_id": 151643,
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"dtype": "bfloat16",
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"eos_token_id": 151645,
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"head_dim": 128,
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"hidden_act": "silu",
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"initializer_range": 0.02,
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"layer_types": [
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention"
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],
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"max_position_embeddings": 40960,
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"max_window_layers": 28,
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"model_type": "qwen3",
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"num_attention_heads": 16,
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"num_hidden_layers": 28,
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"num_key_value_heads": 8,
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"pad_token_id": 151643,
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"rms_norm_eps": 1e-06,
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"rope_parameters": {
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"rope_theta": 1000000,
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"rope_type": "default"
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},
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"sliding_window": null,
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"tie_word_embeddings": true,
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"transformers_version": "5.6.2",
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"use_cache": false,
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"use_sliding_window": false,
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"vocab_size": 151936
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}
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generation_config.json
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{
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"bos_token_id": 151643,
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"do_sample": true,
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"eos_token_id": [
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151645,
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151643
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],
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"pad_token_id": 151643,
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"temperature": 0.6,
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"top_k": 20,
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"top_p": 0.95,
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"transformers_version": "5.6.2"
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}
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3
model.safetensors
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model.safetensors
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version https://git-lfs.github.com/spec/v1
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size 1192135096
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3
tokenizer.json
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3
tokenizer.json
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version https://git-lfs.github.com/spec/v1
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oid sha256:edfc0debec846c25f2dd452061f7725bf5b66336912a33ba1ec10ebd6c4b49cf
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size 11422749
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30
tokenizer_config.json
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{
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"add_prefix_space": false,
|
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"backend": "tokenizers",
|
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"bos_token": null,
|
||||
"clean_up_tokenization_spaces": false,
|
||||
"eos_token": "<|im_end|>",
|
||||
"errors": "replace",
|
||||
"extra_special_tokens": [
|
||||
"<|im_start|>",
|
||||
"<|im_end|>",
|
||||
"<|object_ref_start|>",
|
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"<|object_ref_end|>",
|
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"<|box_start|>",
|
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"<|box_end|>",
|
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"<|quad_start|>",
|
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"<|quad_end|>",
|
||||
"<|vision_start|>",
|
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"<|vision_end|>",
|
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"<|vision_pad|>",
|
||||
"<|image_pad|>",
|
||||
"<|video_pad|>"
|
||||
],
|
||||
"is_local": false,
|
||||
"local_files_only": false,
|
||||
"model_max_length": 131072,
|
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"pad_token": "<|endoftext|>",
|
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"split_special_tokens": false,
|
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"tokenizer_class": "Qwen2Tokenizer",
|
||||
"unk_token": null
|
||||
}
|
||||
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