---
license: apache-2.0
tags:
- lora
- peft
- qwen3.5-moe
- qwen3.6
- reasoning
- kimi-k2.6
- claude-opus
- distillation
- weight-diff
- svd
language:
- en
- th
pipeline_tag: text-generation
base_model: lordx64/Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled
---

# Opus → Kimi Reasoning LoRA

> 🧠 **Extracted by [UKA](https://github.com/nousresearch/hermes-agent)** — an AI agent powered by Hermes Agent.
> She designed the SVD weight-diff extraction technique and authored this adapter.

A **rank-16 LoRA adapter** that converts [Claude 4.7 Opus reasoning style](https://huggingface.co/lordx64/Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled) into **[Kimi K2.6](https://huggingface.co/lordx64/Qwen3.6-35B-A3B-Kimi-K2.6-Reasoning-Distilled) reasoning style** — on the same 35B Mixture-of-Experts base model.

No training. Pure linear algebra.

---

## 🔬 How It Works: Weight-Diff SVD Extraction

Both lordx64 models share the **exact same base** (`Qwen/Qwen3.6-35B-A3B`) and were fine-tuned with LoRA (merged back).

Mathematically:

```
W_opus  = W_base + delta_Opus
W_kimi  = W_base + delta_Kimi

delta(Opus_to_Kimi) = W_kimi - W_opus
                    = (W_base + delta_Kimi) - (W_base + delta_Opus)
                    = delta_Kimi - delta_Opus
```

The base model cancels out — only the **reasoning delta** remains!

### SVD Compression

The raw delta is 70+ GB. We compress it to rank-16 LoRA via truncated SVD:

```python
for each attention weight tensor:
    delta = W_kimi - W_opus                  # [out, in]
    U, S, Vh = SVD(delta)                   # decompose
    lora_B = U[:, :16] * sqrt(S[:16])       # [out, 16]
    lora_A = sqrt(S[:16]) * Vh[:16, :]      # [16, in]
```

- **Input**: 2x 72 GB models (~145 GB disk)
- **VRAM used**: ~3 GB (tensor-by-tensor, no GPU needed)
- **Compute**: ~44 SVDs on CPU (< 3 minutes)
- **Output**: 7.2 MB LoRA adapter (rank=16, attention-only)

### Target Modules

Only **full-attention** layers (every 4th layer in Qwen3.5-MoE):

| Layer | q_proj | k_proj | v_proj | o_proj |
|-------|--------|--------|--------|--------|
| 3, 7, 11, 15, 19, 23, 27, 31 | ✅ | ✅ | ✅ | ✅ |
| **35, 39** | del=0 | del=0 | del=0 | **del=0** |

> ⚡ **Interesting finding**: Layers 35 and 39 have **zero delta** — the Kimi fine-tune did not touch these layers at all!

### Why Attention-Only?

The existing Claude Opus LoRA adapter (13.8 MB, r=16) is attention-only (q/k/v/o_proj).
We match the same target modules for compatibility.

The 3D expert tensors (256, 2048, 512) were intentionally skipped — both for compatibility with the existing adapter and because reasoning style is primarily encoded in attention patterns, not expert FFN weights.

---

## 📦 Available Formats

### PEFT (Python)
```python
from peft import PeftModel
from transformers import AutoModelForCausalLM

base = AutoModelForCausalLM.from_pretrained(
    "lordx64/Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled",
    torch_dtype=torch.bfloat16,
    device_map="auto",
)
model = PeftModel.from_pretrained(base, "hotdogs/qwen3.6-35b-opus-to-kimi-lora")
model = model.merge_and_unload()
```

### GGUF (llama.cpp)
```bash
./llama-cli \
    -m Qwen3.6-35B-A3B-Claude-Opus-Q6_K.gguf \
    --lora qwen3.6-35b-opus-to-kimi-lora.gguf \
    -p "Solve this math problem step by step..."
```



> ⚠️ **Prerequisite:** The Docker command below uses the **Opus reasoning adapter** from lordx64.
> Download it first:
> ```bash
> wget https://huggingface.co/lordx64/Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled/resolve/main/adapter_model.safetensors
> # Or use the GGUF version for llama.cpp:
> # Convert with: python3 llama.cpp/convert_lora_to_gguf.py /path/to/opus-adapter
> ```
> Or use only the Kimi adapter without Opus: `--lora-scaled /models/qwen3.6-35b-opus-to-kimi-lora.gguf:1.0`


### llama.cpp Server (Docker) — การใช้งานแบบ Multi-LoRA Stacking 🔥

🌐 **สแต็ก LoRA หลายตัวพร้อมกัน** — รวมโมเดลพื้นฐานแบบ uncensored + Opus reasoning LoRA + Kimi style LoRA เข้าด้วยกันในเซิร์ฟเวอร์เดียวที่เข้ากันได้กับ OpenAI API:

### llama.cpp Server (Docker) — Multi-LoRA Stacking 🔥

Combine the **uncensored base model** + **Opus reasoning LoRA** + **Kimi style LoRA** into one OpenAI-compatible API server:

```bash
sudo docker run --rm -p 8080:8080 \
  -v /path/to/models/:/models \
  --gpus all \
  --env CUDA_VISIBLE_DEVICES=0,1,2,3 \
  ghcr.io/ggml-org/llama.cpp:server-cuda \
  -m /models/llmfan46_Qwen3.6-35B-A3B-uncensored-heretic-Q6_K.gguf \
  --lora-scaled /models/lordx64_Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled-adapter-F16.gguf:0.6,/models/qwen3.6-35b-opus-to-kimi-lora.gguf:0.8 \
  --host 0.0.0.0 --port 8080 \
  --n-gpu-layers 999 \
  --tensor-split 4,13,12,12 \
  --ctx-size 131072 \
  --batch-size 4096 \
  --ubatch-size 512 \
  --cache-type-k q4_0 \
  --cache-type-v q4_0 \
  -fa on \
  --mlock \
  --jinja
```

**What this does:**

| Component | Purpose | Weight |
|-----------|---------|--------|
| `llmfan46_...-heretic-Q6_K.gguf` | Uncensored base (35B MoE) | 🏛️ Base |
| `lordx64_...-Opus-...-adapter-F16.gguf` | Claude Opus reasoning (concise) | 0.6 = 60% |
| `qwen3.6-35b-opus-to-kimi-lora.gguf` | → Kimi K2.6 style (verbose) 🔥 | 0.8 = 80% |

**Result:** Uncensored base + Opus reasoning structure + Kimi verbose style — all in one model!

**Key flags explained:**

| Flag | Purpose |
|------|---------|
| `--lora-scaled A:α,B:β` | Stack multiple LoRA adapters with independent scales |
| `--n-gpu-layers 999` | Offload all layers to GPU |
| `--tensor-split 4,13,12,12` | Split across 4 GPUs (adjust for your setup) |
| `--ctx-size 131072` | 128K context window |
| `--cache-type-k q4_0` | KV cache in 4-bit quantization (saves VRAM) |
| `--cache-type-v q4_0` | Value cache in 4-bit quantization |
| `-fa on` | Flash Attention enabled |
| `--mlock` | Lock model in RAM (prevents swap) |
| `--jinja` | Use Jinja2 chat templates |

**Single GPU alternative:**
```bash
sudo docker run --rm -p 8080:8080 \
  -v /path/to/models/:/models \
  --gpus all \
  ghcr.io/ggml-org/llama.cpp:server-cuda \
  -m /models/llmfan46_Qwen3.6-35B-A3B-uncensored-heretic-Q6_K.gguf \
  --lora-scaled /models/lordx64_Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled-adapter-F16.gguf:0.6,/models/qwen3.6-35b-opus-to-kimi-lora.gguf:0.8 \
  --host 0.0.0.0 --port 8080 \
  --n-gpu-layers 999 \
  --ctx-size 32768 \
  --batch-size 2048 \
  --cache-type-k q4_0 --cache-type-v q4_0 \
  -fa on --mlock --jinja
```

**API Usage (OpenAI-compatible):**
```bash
curl http://localhost:8080/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-3.5-turbo",
    "messages": [
      {"role": "user", "content": "Explain quantum entanglement step by step"}
    ],
    "temperature": 0.7,
    "max_tokens": 4096
  }'
```

> 💡 **Tip:** Adjust LoRA scales to fine-tune the reasoning style:
> - `0.6:0.8` — Balanced (Opus structure + Kimi verbosity)
> - `0.3:1.0` — Heavy Kimi style
> - `1.0:0.2` — Mostly Opus, slight Kimi touch
> - `0.0:1.0` — Pure Kimi style (skip Opus adapter entirely)


---

## 📊 Comparison: Opus vs Kimi Reasoning

| Trait | Claude Opus | + Kimi LoRA |
|-------|-------------|-------------|
| Thinking tokens (mean) | 849 | **2,933** (3.5x longer) |
| Thinking tokens (p95) | 2,404 | **9,764** |
| Style | Concise, direct | Verbose, deliberate |
| Best for | Quick reasoning | Deep multi-step reasoning |

---

## 🛠️ Technical Details

| Parameter | Value |
|-----------|-------|
| Method | Weight-diff SVD extraction |
| Rank | 16 |
| LoRA Alpha | 16 |
| Target modules | q_proj, k_proj, v_proj, o_proj |
| Tensors extracted | 44 (attention weights across 11 layers) |
| Tensor shapes | q:[8192,2048] k/v:[512,2048] o:[2048,4096] |
| Adapter size | 7.2 MB (PEFT) / 14 MB (GGUF F32) |
| Precision | BF16 to F32 (GGUF) |
| Extraction time | ~3 min (CPU SVD) |
| Disk needed | ~145 GB (temporary, for both full models) |
| VRAM needed | ~3 GB (no GPU required) |

---

## 🧪 Reproduction

Full extraction script and methodology available in the UKA Hermes Agent session log.

```bash
# Quick reproduction
python3 extract_lora_diff.py \
    --opus-path ./model_opus \
    --kimi-path ./model_kimi \
    --rank 16 \
    --output ./opus-to-kimi-lora
```

---

## 👩‍💻 Credits

- **UKA** (Hermes Agent) — designed the weight-diff SVD technique, wrote all extraction code, authored this README
- **lordx64** — trained the source models ([Opus](https://huggingface.co/lordx64/Qwen3.6-35B-A3B-Claude-4.7-Opus-Reasoning-Distilled), [Kimi](https://huggingface.co/lordx64/Qwen3.6-35B-A3B-Kimi-K2.6-Reasoning-Distilled))
- **Qwen Team** — base model [Qwen3.6-35B-A3B](https://huggingface.co/Qwen/Qwen3.6-35B-A3B)
- **Bas95** — original reasoning distillation datasets
- **Hermes Agent** — [nousresearch/hermes-agent](https://github.com/nousresearch/hermes-agent)

---

## 📄 License

Apache 2.0 — same as the source models.