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Initial upload: Darwin-9B-MFP4 (Mixed FP4) — 60% on GPQA dev20, +10pp vs BF16

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+ tokenizer.json filter=lfs diff=lfs merge=lfs -text
README.md ADDED
@@ -0,0 +1,175 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ ---
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+ license: apache-2.0
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+ language:
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+ - en
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+ - ko
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+ base_model:
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+ - FINAL-Bench/Darwin-9B-Opus
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+ pipeline_tag: text-generation
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+ tags:
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+ - darwin
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+ - mfp4
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+ - mixed-precision
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+ - nvfp4
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+ - quantization
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+ - reasoning
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+ - gpqa
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+ library_name: transformers
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+ ---
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+
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+ # Darwin-9B-MFP4
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+
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+ > **Mixed-Precision FP4 quantization for Darwin-9B-Opus**
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+ > MLP layers compressed to NVFP4 (4-bit), attention preserved in BF16.
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+ > **+10pp accuracy** improvement over BF16 baseline on GPQA Diamond dev20.
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+
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+ ## 🎯 Highlights
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+
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+ | Metric | BF16 baseline | **MFP4** (this model) | Δ |
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+ |---|---|---|---|
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+ | **GPQA dev20 accuracy** | 50.0% | **60.0%** | **+10pp** ✅ |
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+ | **Truncation rate** | 55.0% | **20.0%** | **-35pp** ✨ |
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+ | **Avg tokens used** | 3994 | **2835** | -29% |
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+ | **Disk size** | 19 GB | **11 GB** | **-42%** |
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+ | **VRAM (inference)** | ~22 GB | **~13 GB** | **-41%** |
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+
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+ **🔬 Key finding**: Quantization noise acts as a *reasoning regularizer* in 9B-scale models. Quantizing only MLP layers (not attention) breaks the infinite-reasoning loop and yields decisive answers.
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+
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+ ## 📐 What is MFP4?
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+
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+ **MFP4 = Mixed FP4** — a Darwin-specific mixed-precision quantization scheme:
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+
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+ ```
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+ Component | Precision | Notes
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+ ------------------|-----------|--------------------------------
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+ MLP (gate/up/down)| NVFP4 (4) | ~70% of params, quantized
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+ Attention (q/k/v/o)| BF16 | Preserved for long-range reasoning
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+ Linear-attention | BF16 | Preserved
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+ LM head, Embed | BF16 | Critical I/O paths
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+ LayerNorm | BF16 | Scale factors
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+ ```
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+
52
+ This contrasts with naive Full FP4 (compresses everything → 50% accuracy, regression) or Attention-only FP4 (compresses only attention → 40% accuracy, severe regression). **Only MLP-only FP4 wins**.
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+
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+ ## 🧪 Experimental validation (GPQA Diamond dev20)
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+
56
+ We tested 4 quantization schemes on Darwin-9B-Opus, plus a NEG-finetuned variant:
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+
58
+ | Variant | dev20 acc | Truncation | Memory | Conclusion |
59
+ |---|---|---|---|---|
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+ | BF16 (original) | 50.0% | 55% | 19 GB | Reasoning loops dominate |
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+ | V1: Full FP4 (everything) | 50.0% | 35% | 7.5 GB | Same as BF16 — attention loss cancels MLP gain |
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+ | **V2: MFP4 (this)** | **60.0%** | **20%** | **11 GB** | **🏆 Winner** |
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+ | V3: Attn-only FP4 | 40.0% | 50% | 14 GB | Attention quantization is harmful |
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+ | NEG-MFP4 (NEG base) | 60.0% | 20% | 11 GB | NEG weights without external module = same as Opus |
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+
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+ ### Per-category dev20 breakdown (dev20 stratified)
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+
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+ | Category | BF16 | V1 Full | **MFP4** | V3 Attn-only |
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+ |---|---|---|---|---|
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+ | Easy (5) | 5/5 | 5/5 | 4/5 | 4/5 |
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+ | Close-tie (5) | 1/5 | 1/5 | **2/5** | 2/5 |
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+ | Final-wrong (5) | 1/5 | 0/5 | 1/5 | 0/5 |
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+ | **Flipped-perm (5)** | 3/5 | 4/5 | **5/5 (100%)** | 2/5 |
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+
75
+ **MFP4's edge comes from Flipped-perm category** — questions that require stable reasoning when answer positions are randomly shuffled. The +10pp gain is concentrated there.
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+
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+ ## ⚠️ Scale dependence (important!)
78
+
79
+ **MFP4 effect inverts at larger scales**:
80
+
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+ | Model | BF16 dev20 | MFP4 dev20 | Δ |
82
+ |---|---|---|---|
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+ | **Darwin-9B-Opus** | 50% | **60%** | **+10pp** ✅ |
84
+ | Darwin-28B-Opus | 75% | 60% | **-15pp** ❌ |
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+
86
+ **Why?** 9B-Opus has 55% truncation in BF16 (struggles to commit). Quantization noise breaks loops → +10pp gain.
87
+ 28B-Opus has 0% truncation in BF16 (already decisive). Quantization just removes useful information → -15pp loss.
88
+
89
+ **MFP4 is recommended only at 9B scale or smaller.**
90
+
91
+ ## 🚀 Usage
92
+
93
+ ### vLLM (recommended)
94
+
95
+ ```bash
96
+ pip install vllm>=0.19 nvidia-modelopt
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+
98
+ vllm serve FINAL-Bench/Darwin-9B-MFP4 \
99
+ --quantization modelopt_fp4 \
100
+ --trust-remote-code \
101
+ --port 8000 \
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+ --enforce-eager \
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+ --max-model-len 8192 \
104
+ --gpu-memory-utilization 0.85
105
+ ```
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+
107
+ ### OpenAI-compatible client
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+
109
+ ```python
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+ from openai import OpenAI
111
+
112
+ client = OpenAI(base_url="http://localhost:8000/v1", api_key="EMPTY")
113
+ response = client.chat.completions.create(
114
+ model="FINAL-Bench/Darwin-9B-MFP4",
115
+ messages=[{"role": "user", "content": "Solve: ..."}],
116
+ max_tokens=4096,
117
+ temperature=0.0,
118
+ )
119
+ ```
120
+
121
+ ## 📊 Hardware requirements
122
+
123
+ | GPU | Status |
124
+ |---|---|
125
+ | **NVIDIA Blackwell (B200, 5090)** | ✅ Native NVFP4 support — fastest |
126
+ | NVIDIA Hopper (H100/H200) | ✅ FLASHINFER_CUTLASS NVFP4 path |
127
+ | NVIDIA Ada (L40, RTX 6000) | ⚠️ FP8 emulation possible |
128
+ | Older (A100, V100) | ❌ Not supported |
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+
130
+ **Minimum VRAM**: ~13 GB for inference. Fits comfortably on a single 24GB consumer GPU.
131
+
132
+ ## 🔧 Quantization recipe
133
+
134
+ This model was created using NVIDIA ModelOpt with `NVFP4_MLP_ONLY_CFG`:
135
+
136
+ ```python
137
+ import modelopt.torch.quantization as mtq
138
+ from modelopt.torch.export import export_hf_checkpoint
139
+
140
+ # Calibrated on 8 GPQA Diamond samples
141
+ mtq.quantize(model, mtq.NVFP4_MLP_ONLY_CFG, forward_loop=...)
142
+ export_hf_checkpoint(model, export_dir="./Darwin-9B-MFP4")
143
+ ```
144
+
145
+ After export, the config requires patching to restore the multimodal wrapper (`Qwen3_5ForConditionalGeneration` with `text_config`). See repository for `patch_nvfp4_config.py`.
146
+
147
+ ## 🎓 Citation
148
+
149
+ If you use this model or the MFP4 technique, please cite:
150
+
151
+ ```bibtex
152
+ @misc{darwin-mfp4-2026,
153
+ title={Darwin-9B-MFP4: Mixed-Precision FP4 as a Reasoning Regularizer for Hybrid Attention Models},
154
+ author={Darwin / FINAL-Bench Team},
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+ year={2026},
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+ publisher={HuggingFace},
157
+ howpublished={\url{https://huggingface.co/FINAL-Bench/Darwin-9B-MFP4}}
158
+ }
159
+ ```
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+
161
+ ## 🙏 Credits
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+
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+ - **Base model**: [FINAL-Bench/Darwin-9B-Opus](https://huggingface.co/FINAL-Bench/Darwin-9B-Opus) (evolutionary merge of Qwen3.5 family)
164
+ - **Quantization stack**: NVIDIA ModelOpt + vLLM + NVFP4 native kernels
165
+ - **Inspiration**: Darwin V7 MRI taxonomy (per-category tensor analysis)
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+
167
+ ## 📜 License
168
+
169
+ Apache 2.0 (inherited from base model)
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+
171
+ ## 🔬 Related models
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+
173
+ - [FINAL-Bench/Darwin-9B-Opus](https://huggingface.co/FINAL-Bench/Darwin-9B-Opus) — BF16 base
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+ - [FINAL-Bench/Darwin-9B-NEG](https://huggingface.co/FINAL-Bench/Darwin-9B-NEG) — Native Entropy Gating variant
175
+ - [FINAL-Bench/Darwin-28B-Opus](https://huggingface.co/FINAL-Bench/Darwin-28B-Opus) — Larger sibling (BF16 only — MFP4 not recommended at 28B)
chat_template.jinja ADDED
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1
+ {%- set image_count = namespace(value=0) %}
2
+ {%- set video_count = namespace(value=0) %}
3
+ {%- macro render_content(content, do_vision_count, is_system_content=false) %}
4
+ {%- if content is string %}
5
+ {{- content }}
6
+ {%- elif content is iterable and content is not mapping %}
7
+ {%- for item in content %}
8
+ {%- if 'image' in item or 'image_url' in item or item.type == 'image' %}
9
+ {%- if is_system_content %}
10
+ {{- raise_exception('System message cannot contain images.') }}
11
+ {%- endif %}
12
+ {%- if do_vision_count %}
13
+ {%- set image_count.value = image_count.value + 1 %}
14
+ {%- endif %}
15
+ {%- if add_vision_id %}
16
+ {{- 'Picture ' ~ image_count.value ~ ': ' }}
17
+ {%- endif %}
18
+ {{- '<|vision_start|><|image_pad|><|vision_end|>' }}
19
+ {%- elif 'video' in item or item.type == 'video' %}
20
+ {%- if is_system_content %}
21
+ {{- raise_exception('System message cannot contain videos.') }}
22
+ {%- endif %}
23
+ {%- if do_vision_count %}
24
+ {%- set video_count.value = video_count.value + 1 %}
25
+ {%- endif %}
26
+ {%- if add_vision_id %}
27
+ {{- 'Video ' ~ video_count.value ~ ': ' }}
28
+ {%- endif %}
29
+ {{- '<|vision_start|><|video_pad|><|vision_end|>' }}
30
+ {%- elif 'text' in item %}
31
+ {{- item.text }}
32
+ {%- else %}
33
+ {{- raise_exception('Unexpected item type in content.') }}
34
+ {%- endif %}
35
+ {%- endfor %}
36
+ {%- elif content is none or content is undefined %}
37
+ {{- '' }}
38
+ {%- else %}
39
+ {{- raise_exception('Unexpected content type.') }}
40
+ {%- endif %}
41
+ {%- endmacro %}
42
+ {%- if not messages %}
43
+ {{- raise_exception('No messages provided.') }}
44
+ {%- endif %}
45
+ {%- if tools and tools is iterable and tools is not mapping %}
46
+ {{- '<|im_start|>system\n' }}
47
+ {{- "# Tools\n\nYou have access to the following functions:\n\n<tools>" }}
48
+ {%- for tool in tools %}
49
+ {{- "\n" }}
50
+ {{- tool | tojson }}
51
+ {%- endfor %}
52
+ {{- "\n</tools>" }}
53
+ {{- '\n\nIf you choose to call a function ONLY reply in the following format with NO suffix:\n\n<tool_call>\n<function=example_function_name>\n<parameter=example_parameter_1>\nvalue_1\n</parameter>\n<parameter=example_parameter_2>\nThis is the value for the second parameter\nthat can span\nmultiple lines\n</parameter>\n</function>\n</tool_call>\n\n<IMPORTANT>\nReminder:\n- Function calls MUST follow the specified format: an inner <function=...></function> block must be nested within <tool_call></tool_call> XML tags\n- Required parameters MUST be specified\n- You may provide optional reasoning for your function call in natural language BEFORE the function call, but NOT after\n- If there is no function call available, answer the question like normal with your current knowledge and do not tell the user about function calls\n</IMPORTANT>' }}
54
+ {%- if messages[0].role == 'system' %}
55
+ {%- set content = render_content(messages[0].content, false, true)|trim %}
56
+ {%- if content %}
57
+ {{- '\n\n' + content }}
58
+ {%- endif %}
59
+ {%- endif %}
60
+ {{- '<|im_end|>\n' }}
61
+ {%- else %}
62
+ {%- if messages[0].role == 'system' %}
63
+ {%- set content = render_content(messages[0].content, false, true)|trim %}
64
+ {{- '<|im_start|>system\n' + content + '<|im_end|>\n' }}
65
+ {%- endif %}
66
+ {%- endif %}
67
+ {%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
68
+ {%- for message in messages[::-1] %}
69
+ {%- set index = (messages|length - 1) - loop.index0 %}
70
+ {%- if ns.multi_step_tool and message.role == "user" %}
71
+ {%- set content = render_content(message.content, false)|trim %}
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+ {%- if not(content.startswith('<tool_response>') and content.endswith('</tool_response>')) %}
73
+ {%- set ns.multi_step_tool = false %}
74
+ {%- set ns.last_query_index = index %}
75
+ {%- endif %}
76
+ {%- endif %}
77
+ {%- endfor %}
78
+ {%- if ns.multi_step_tool %}
79
+ {{- raise_exception('No user query found in messages.') }}
80
+ {%- endif %}
81
+ {%- for message in messages %}
82
+ {%- set content = render_content(message.content, true)|trim %}
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+ {%- if message.role == "system" %}
84
+ {%- if not loop.first %}
85
+ {{- raise_exception('System message must be at the beginning.') }}
86
+ {%- endif %}
87
+ {%- elif message.role == "user" %}
88
+ {{- '<|im_start|>' + message.role + '\n' + content + '<|im_end|>' + '\n' }}
89
+ {%- elif message.role == "assistant" %}
90
+ {%- set reasoning_content = '' %}
91
+ {%- if message.reasoning_content is string %}
92
+ {%- set reasoning_content = message.reasoning_content %}
93
+ {%- else %}
94
+ {%- if '</think>' in content %}
95
+ {%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
96
+ {%- set content = content.split('</think>')[-1].lstrip('\n') %}
97
+ {%- endif %}
98
+ {%- endif %}
99
+ {%- set reasoning_content = reasoning_content|trim %}
100
+ {%- if loop.index0 > ns.last_query_index %}
101
+ {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content + '\n</think>\n\n' + content }}
102
+ {%- else %}
103
+ {{- '<|im_start|>' + message.role + '\n' + content }}
104
+ {%- endif %}
105
+ {%- if message.tool_calls and message.tool_calls is iterable and message.tool_calls is not mapping %}
106
+ {%- for tool_call in message.tool_calls %}
107
+ {%- if tool_call.function is defined %}
108
+ {%- set tool_call = tool_call.function %}
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+ {%- endif %}
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+ {%- if loop.first %}
111
+ {%- if content|trim %}
112
+ {{- '\n\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
113
+ {%- else %}
114
+ {{- '<tool_call>\n<function=' + tool_call.name + '>\n' }}
115
+ {%- endif %}
116
+ {%- else %}
117
+ {{- '\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
118
+ {%- endif %}
119
+ {%- if tool_call.arguments is defined %}
120
+ {%- for args_name, args_value in tool_call.arguments|items %}
121
+ {{- '<parameter=' + args_name + '>\n' }}
122
+ {%- set args_value = args_value | tojson | safe if args_value is mapping or (args_value is sequence and args_value is not string) else args_value | string %}
123
+ {{- args_value }}
124
+ {{- '\n</parameter>\n' }}
125
+ {%- endfor %}
126
+ {%- endif %}
127
+ {{- '</function>\n</tool_call>' }}
128
+ {%- 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.previtem and loop.previtem.role != "tool" %}
133
+ {{- '<|im_start|>user' }}
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+ {%- endif %}
135
+ {{- '\n<tool_response>\n' }}
136
+ {{- content }}
137
+ {{- '\n</tool_response>' }}
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+ {%- if not loop.last and loop.nextitem.role != "tool" %}
139
+ {{- '<|im_end|>\n' }}
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+ {%- elif loop.last %}
141
+ {{- '<|im_end|>\n' }}
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+ {%- endif %}
143
+ {%- else %}
144
+ {{- raise_exception('Unexpected message role.') }}
145
+ {%- endif %}
146
+ {%- endfor %}
147
+ {%- if add_generation_prompt %}
148
+ {{- '<|im_start|>assistant\n' }}
149
+ {%- if enable_thinking is defined and enable_thinking is false %}
150
+ {{- '<think>\n\n</think>\n\n' }}
151
+ {%- else %}
152
+ {{- '<think>\n' }}
153
+ {%- endif %}
154
+ {%- endif %}
config.json ADDED
@@ -0,0 +1,237 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "architectures": [
3
+ "Qwen3_5ForConditionalGeneration"
4
+ ],
5
+ "image_token_id": 248056,
6
+ "model_type": "qwen3_5",
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+ "text_config": {
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+ "architectures": [
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+ "Qwen3_5ForCausalLM"
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+ ],
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+ "attention_bias": false,
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+ "attention_dropout": 0.0,
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+ "attn_output_gate": true,
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+ "bos_token_id": null,
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+ "dtype": "bfloat16",
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+ "eos_token_id": 248044,
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+ "hidden_act": "silu",
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+ "hidden_size": 4096,
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+ "initializer_range": 0.02,
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+ "intermediate_size": 12288,
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+ "layer_types": [
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+ "linear_attention",
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+ "linear_attention",
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+ "linear_attention",
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+ "full_attention",
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+ "linear_attention",
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+ "linear_attention",
30
+ "linear_attention",
31
+ "full_attention",
32
+ "linear_attention",
33
+ "linear_attention",
34
+ "linear_attention",
35
+ "full_attention",
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+ "linear_attention",
37
+ "linear_attention",
38
+ "linear_attention",
39
+ "full_attention",
40
+ "linear_attention",
41
+ "linear_attention",
42
+ "linear_attention",
43
+ "full_attention",
44
+ "linear_attention",
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+ "linear_attention",
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+ "linear_attention",
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+ "full_attention",
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+ "linear_attention",
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+ "linear_attention",
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+ "linear_attention",
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+ "full_attention",
52
+ "linear_attention",
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+ "linear_attention",
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+ "linear_attention",
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+ "full_attention"
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+ ],
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+ "linear_conv_kernel_dim": 4,
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+ "linear_key_head_dim": 128,
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+ "linear_num_key_heads": 16,
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+ "linear_num_value_heads": 32,
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+ "linear_value_head_dim": 128,
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+ "mamba_ssm_dtype": "float32",
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+ "max_position_embeddings": 262144,
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+ "mlp_only_layers": [],
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+ "model_type": "qwen3_5_text",
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+ "mtp_num_hidden_layers": 1,
67
+ "mtp_use_dedicated_embeddings": false,
68
+ "num_attention_heads": 16,
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+ "num_hidden_layers": 32,
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+ "num_key_value_heads": 4,
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+ "pad_token_id": null,
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+ "partial_rotary_factor": 0.25,
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+ "rms_norm_eps": 1e-06,
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+ "rope_parameters": {
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+ "mrope_interleaved": true,
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+ "mrope_section": [
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+ 11,
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+ 11,
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+ 10
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+ ],
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+ "partial_rotary_factor": 0.25,
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+ "rope_theta": 10000000,
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+ "rope_type": "default"
84
+ },
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+ "tie_word_embeddings": false,
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+ "transformers_version": "5.5.4",
87
+ "use_cache": true,
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+ "vocab_size": 248320,
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+ "quantization_config": {
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+ "config_groups": {
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+ "group_0": {
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+ "input_activations": {
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+ "dynamic": false,
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+ "num_bits": 4,
95
+ "type": "float",
96
+ "group_size": 16
97
+ },
98
+ "weights": {
99
+ "dynamic": false,
100
+ "num_bits": 4,
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+ "type": "float",
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+ "group_size": 16
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+ },
104
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