---
license: apache-2.0
language:
- en
base_model:
- Qwen/Qwen3.5-9B
library_name: transformers
tags:
- qwen
- claude
- opus
- reasoning
- distill
datasets:
- nohurry/Opus-4.6-Reasoning-3000x-filtered
- Jackrong/Qwen3.5-reasoning-700x
- TeichAI/claude-4.5-opus-high-reasoning-250x
---
# Qwen3.5-9B Claude Opus 4.6 Reasoning Distill — GGUF
 
GGUF quantizations of [empero-ai/Qwen3.5-9B-Claude-Opus-4.6-Distill](https://huggingface.co/empero-ai/Qwen3.5-9B-Claude-Opus-4.6-Distill), a reasoning-focused fine-tune of [Qwen/Qwen3.5-9B](https://huggingface.co/Qwen/Qwen3.5-9B).
 
This model was trained to produce detailed chain-of-thought reasoning inside `<think>` tags before giving its final answer, distilled from Claude Opus 4.6 and Qwen3.5 reasoning traces.
 
## Quantizations
 
| File | Quant | Size | Description |
|------|-------|------|-------------|
| `qwen3.5-9b-opus4.6-distill-Q2_K.gguf` | Q2_K | ~3.5 GB | Smallest, lowest quality. For very constrained devices. |
| `qwen3.5-9b-opus4.6-distill-Q3_K_M.gguf` | Q3_K_M | ~4.5 GB | Low quality, usable for testing. |
| `qwen3.5-9b-opus4.6-distill-Q4_K_M.gguf` | Q4_K_M | ~5.5 GB | **Recommended.** Best balance of quality and size. |
| `qwen3.5-9b-opus4.6-distill-Q5_K_M.gguf` | Q5_K_M | ~6.5 GB | High quality, moderate size. |
| `qwen3.5-9b-opus4.6-distill-Q6_K.gguf` | Q6_K | ~7.5 GB | Very high quality, near-lossless. |
| `qwen3.5-9b-opus4.6-distill-Q8_0.gguf` | Q8_0 | ~9.5 GB | Highest quality quantization. |
| `qwen3.5-9b-opus4.6-distill-f16.gguf` | F16 | ~18 GB | Full precision, no quantization loss. |
 
For most users, **Q4_K_M** or **Q5_K_M** is the sweet spot.
 
## How to Use
 
### llama.cpp
 
```bash
llama-cli -m qwen3.5-9b-opus4.6-distill-Q5_K_M.gguf -p "<|im_start|>system\nYou are a deep reasoning AI. Think carefully inside <think> tags before answering.<|im_end|>\n<|im_start|>user\nExplain why the sky is blue.<|im_end|>\n<|im_start|>assistant\n" -n 2048
```
 
### Ollama
 
```bash
ollama run empero-ai/qwen3.5-9b-opus4.6-distill
```
 
### LM Studio / GPT4All / Jan
 
Download the GGUF file of your choice and load it directly in the application.
 
## Training Details
 
### Method
 
- **Stage 1 — SFT (Supervised Fine-Tuning):** 3 epochs on ~13K examples teaching the model the `<think>` reasoning format using QLoRA (4-bit, rank 64, alpha 128)
- **Base model:** Qwen/Qwen3.5-9B
- **Hardware:** RTX 5090 (32GB VRAM)
- **Attention:** SDPA
- **Optimizer:** Paged AdamW 8-bit
- **Learning rate:** 1e-4 with cosine schedule
- **Effective batch size:** 8 (batch 1 × gradient accumulation 8)
- **Max sequence length:** 4096
 
### SFT Results
 
| Metric | Epoch 1 | Epoch 2 (best) | Epoch 3 |
|--------|---------|-----------------|---------|
| Eval Loss | 0.5205 | **0.4809** | 0.4915 |
| Eval Token Accuracy | 0.8494 | **0.8615** | 0.8617 |
| Eval Entropy | 0.508 | 0.434 | 0.394 |
 
Best checkpoint (epoch 2) was selected via `load_best_model_at_end`.
 
### Datasets
 
| Dataset | Examples | Type |
|---------|----------|------|
| [nohurry/Opus-4.6-Reasoning-3000x-filtered](https://huggingface.co/datasets/nohurry/Opus-4.6-Reasoning-3000x-filtered) | 2,326 | Problem → thinking → solution |
| [Jackrong/Qwen3.5-reasoning-700x](https://huggingface.co/datasets/Jackrong/Qwen3.5-reasoning-700x) | 633 | ShareGPT with `<think>` tags |
| [TeichAI/claude-4.5-opus-high-reasoning-250x](https://huggingface.co/datasets/TeichAI/claude-4.5-opus-high-reasoning-250x) | 250 | Messages with `<think>` tags |
| [Roman1111111/claude-opus-4.6-10000x](https://huggingface.co/datasets/Roman1111111/claude-opus-4.6-10000x) | 9,631 | Messages with reasoning traces |
| **Total** | **12,840** | |
 
### Output Format
 
The model outputs reasoning in `<think>` tags followed by its final answer:
 
```
<think>
The user is asking about why the sky appears blue. This involves Rayleigh scattering...
 
Sunlight contains all wavelengths of visible light. When it enters Earth's atmosphere,
shorter wavelengths (blue/violet) scatter more than longer wavelengths (red/orange)...
 
While violet actually scatters more than blue, our eyes are more sensitive to blue light,
and some violet is absorbed by the upper atmosphere...
</think>
 
The sky appears blue due to Rayleigh scattering. When sunlight passes through Earth's
atmosphere, the shorter blue wavelengths scatter in all directions more than the longer
red wavelengths. Although violet light scatters even more, our eyes are more sensitive
to blue, and some violet is absorbed higher in the atmosphere — so we perceive the sky
as blue.
```

## About Empero AI
 
This model was developed by [Empero AI](https://empero.org). We build open-source AI tools and models focused on advancing reasoning capabilities in smaller, efficient language models.
 
## License
 
This model inherits the [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0) license from Qwen3.5-9B.