---
language:
- en
- zh
library_name: transformers
license: mit
pipeline_tag: text-generation
tags:
- heretic
- uncensored
- decensored
- abliterated
- compressed-tensors
- fp8
base_model: zai-org/GLM-4.7
---
# GLM-4.7-heretic-FP8

FP8 W8A8 quantized version of [trohrbaugh/GLM-4.7-heretic](https://huggingface.co/trohrbaugh/GLM-4.7-heretic) — a decensored [zai-org/GLM-4.7](https://huggingface.co/zai-org/GLM-4.7), made using [Heretic](https://github.com/p-e-w/heretic) v1.2.0+custom.

## Abliteration parameters

| Parameter | Value |
| :-------- | :---: |
| **direction_index** | per layer |
| **attn.o_proj.max_weight** | 1.84 |
| **attn.o_proj.max_weight_position** | 49.16 |
| **attn.o_proj.min_weight** | 1.64 |
| **attn.o_proj.min_weight_distance** | 26.42 |
| **mlp.down_proj.max_weight** | 1.02 |
| **mlp.down_proj.max_weight_position** | 53.46 |
| **mlp.down_proj.min_weight** | 0.97 |
| **mlp.down_proj.min_weight_distance** | 45.98 |

## Abliteration performance

| Metric | This model | Original model ([zai-org/GLM-4.7](https://huggingface.co/zai-org/GLM-4.7)) |
| :----- | :--------: | :---------------------------: |
| **KL divergence** | 0.0748 | 0 *(by definition)* |
| **Refusals** | 0/100 | 99/100 |

## FP8 Quantization

Quantized using [llm-compressor](https://github.com/vllm-project/llm-compressor) (v0.10.1-dev, main branch) to produce a **compressed-tensors** format checkpoint natively supported by vLLM — no `--quantization` flag or patches needed.

### Quantization recipe

- **Scheme:** FP8 (W8A8) — static per-channel FP8 E4M3 weights with minmax observer, dynamic per-token FP8 E4M3 activations
- **Calibration:** 1024 samples from [fineweb-edu-score-2](https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu-score-2), max sequence length 4096
- **SmoothQuant:** Not used (can interfere with MoE expert routing)
- **Format:** `compressed-tensors` (auto-detected by vLLM)

### Precision map

| Component | Precision | Rationale |
| :-------- | :-------: | :-------- |
| Routed expert weights (160 experts × 89 MoE layers) | FP8 E4M3 | Bulk of model — per-channel static scaling via calibration |
| Attention projections (q/k/v/o) | FP8 E4M3 | GQA with 96Q / 8KV heads, head_dim=128 |
| Shared expert weights | FP8 E4M3 | Active every token, well-calibrated |
| Dense MLP (layers 0–2) | FP8 E4M3 | Only 3 dense layers |
| Attention biases (q/k/v) | BF16 | Small tensors, sensitive to precision loss |
| Router/gate weights | BF16 | Routing errors cascade through all downstream computation |
| MoE e_score_correction_bias | BF16 | Critical for expert load balancing |
| RMSNorm / QK norms | BF16 | Negligible size, high sensitivity |
| Embeddings / LM head | BF16 | Standard practice for quantized models |
| MTP head (layer 92: enorm, hnorm, eh_proj) | BF16 | Speculative decoding head, kept full precision |

### Ignore patterns used

```python
IGNORE_PATTERNS = [
    "re:.*embed_tokens.*",
    "lm_head",
    "re:.*layernorm.*",
    "re:.*q_norm.*",
    "re:.*k_norm.*",
    "model.norm",
    "re:.*self_attn\\.q_proj\\.bias",
    "re:.*self_attn\\.k_proj\\.bias",
    "re:.*self_attn\\.v_proj\\.bias",
    "re:.*mlp\\.gate$",
    "re:.*mlp\\.gate\\.weight",
    "re:.*mlp\\.gate\\.e_score_correction_bias",
    "re:.*\\.enorm",
    "re:.*\\.hnorm",
    "re:.*\\.eh_proj",
    "re:.*shared_head\\.norm",
]
```

## Serving

### vLLM (recommended)

vLLM auto-detects the compressed-tensors FP8 format from config.json. No `--quantization` flag required.

```shell
vllm serve trohrbaugh/GLM-4.7-heretic-fp8 \
    --tensor-parallel-size 4 \
    --max-model-len 131072 \
    --tool-call-parser glm47 \
    --reasoning-parser glm45 \
    --enable-auto-tool-choice
```

To disable thinking mode (shorter, faster responses):

```shell
vllm serve trohrbaugh/GLM-4.7-heretic-fp8 \
    --tensor-parallel-size 4 \
    --max-model-len 131072 \
    --tool-call-parser glm47 \
    --reasoning-parser glm45 \
    --enable-auto-tool-choice \
    --default-chat-template-kwargs '{"enable_thinking": false}'
```

Or disable per-request:

```json
{
  "model": "trohrbaugh/GLM-4.7-heretic-fp8",
  "messages": [{"role": "user", "content": "Hello"}],
  "chat_template_kwargs": {"enable_thinking": false}
}
```

### VRAM requirements

| Configuration | Approx. VRAM | Example hardware |
| :------------ | :----------: | :--------------- |
| TP=4 | ~370 GB | 4× H100 80GB, 4× RTX PRO 6000 96GB |
| TP=8 | ~370 GB | 8× A100 80GB, 8× RTX PRO 6000 96GB |

## Related models

| Variant | Size | Format | Link |
| :------ | :--: | :----- | :--- |
| BF16 (full precision) | ~706 GB | safetensors | [trohrbaugh/GLM-4.7-heretic](https://huggingface.co/trohrbaugh/GLM-4.7-heretic) |
| FP8 W8A8 (this model) | ~362 GB | compressed-tensors | [trohrbaugh/GLM-4.7-heretic-fp8](https://huggingface.co/trohrbaugh/GLM-4.7-heretic-fp8) |

## Quantization environment

- **GPU:** 8× NVIDIA RTX PRO 6000 Blackwell Server Edition
- **CUDA:** 13.1
- **torch:** 2.11.0+cu130
- **transformers:** 4.57.6
- **llm-compressor:** 0.10.1-dev (main branch)
- **compressed-tensors:** 0.14.0.1

## Credits

- [Z.ai / THUDM](https://huggingface.co/zai-org) for GLM-4.7
- [P-E-W](https://github.com/p-e-w/heretic) for the Heretic abliteration engine
- [vLLM team](https://github.com/vllm-project/llm-compressor) for llm-compressor

## Citation

```bibtex
@misc{5team2025glm45agenticreasoningcoding,
      title={GLM-4.5: Agentic, Reasoning, and Coding (ARC) Foundation Models}, 
      author={GLM Team and Aohan Zeng and Xin Lv and others},
      year={2025},
      eprint={2508.06471},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2508.06471}, 
}
```