trohrbaugh
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Stable-DiffCoder-8B-Instruct-heretic

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 ---
+license: mit
+base_model:
+- ByteDance-Seed/Stable-DiffCoder-8B-Base
+pipeline_tag: text-generation
 library_name: transformers
+tags:
+- heretic
+- uncensored
+- decensored
+- abliterated
 ---
+# This is a decensored version of [ByteDance-Seed/Stable-DiffCoder-8B-Instruct](https://huggingface.co/ByteDance-Seed/Stable-DiffCoder-8B-Instruct), made using [Heretic](https://github.com/p-e-w/heretic) v1.2.0+custom
+## Abliteration parameters
+| Parameter | Value |
+| :-------- | :---: |
+| **direction_index** | 23.05 |
+| **attn.o_proj.max_weight** | 1.82 |
+| **attn.o_proj.max_weight_position** | 17.20 |
+| **attn.o_proj.min_weight** | 1.48 |
+| **attn.o_proj.min_weight_distance** | 15.66 |
+| **mlp.down_proj.max_weight** | 1.60 |
+| **mlp.down_proj.max_weight_position** | 16.52 |
+| **mlp.down_proj.min_weight** | 0.18 |
+| **mlp.down_proj.min_weight_distance** | 2.24 |
+## Performance
+| Metric | This model | Original model ([ByteDance-Seed/Stable-DiffCoder-8B-Instruct](https://huggingface.co/ByteDance-Seed/Stable-DiffCoder-8B-Instruct)) |
+| :----- | :--------: | :---------------------------: |
+| **KL divergence** | 0.1377 | 0 *(by definition)* |
+| **Refusals** | 9/100 | 54/100 |
+-----
+# Stable-DiffCoder-8B-Instruct
+<div align="left" style="line-height: 1;">
+  <a href="https://bytedance-seed.github.io/Stable-DiffCoder/" target="_blank" style="margin: 2px;">
+    <img alt="Homepage" src="https://img.shields.io/badge/Stable--DiffCoder-Homepage-a468fe?color=a468fe&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
+  </a>
+  <a href="https://arxiv.org/abs/2601.15892" target="_blank" style="margin: 2px;">
+    <img alt="Technical Report" src="https://img.shields.io/badge/arXiv-Technical%20Report-brightgreen?logo=arxiv&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
+  </a>
+  <a href="https://huggingface.co/ByteDance-Seed" target="_blank" style="margin: 2px;">
+      <img alt="Hugging Face" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-ByteDance%20Seed-536af5?color=536af5&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
+  </a>
+  <a href="https://github.com/ByteDance-Seed/Stable-DiffCoder/blob/master/LICENSE" style="margin: 2px;">
+      <img alt="License" src="https://img.shields.io/badge/License-MIT-f5de53?color=f5de53&logoColor=white" style="display: inline-block; vertical-align: middle;"/>
+  </a>
+</div>
+## Introduction
+We are thrilled to introduce Stable-DiffCoder, which is a strong code diffusion large language model. Built directly on the Seed-Coder architecture, data, and training pipeline, it introduces a block diffusion continual pretraining (CPT) stage with a tailored warmup and block-wise clipped noise schedule.
+Under identical architecture and data settings, we systematically analyze and design an efficient diffusion training pipeline that is not only stable but also potentially lifts the model’s performance ceiling. With this recipe, Stable-DiffCoder demonstrates overall performance improvements compared to its autoregressive (AR) counterpart across a broad set of code benchmarks, while any-order modeling improves structured code handling for editing and reasoning, and diffusion-based corruption aids learning for low-resource programming languages.
+Notably, with only CPT followed by supervised fine-tuning, Stable-DiffCoder further surpasses many strong ∼8B AR and diffusion-based code models. These results demonstrate that diffusion-based training can improve code modeling quality beyond what AR training alone can achieve, even under tightly controlled data and architecture constraints.
+<p align="center">
+  <img width="100%" src="imgs/intro_performance.png">
+</p>
+This repo contains the **Stable-DiffCoder-8B-Instruct** model, which has the following features:
+- Type: Mask Diffusion Language Models
+- Training Stage: Pretraining & Post-training
+- Data Source: Public datasets, synthetic data
+- Context Length: 8192
+## Model Downloads
+| Model Name                  | Length | Download   |    Notes |
+|---------------------------------------------------------|--------|------------------------------------|-----------------------|
+| Stable-DiffCoder-8B-Base           | 8K    | 🤗 [Model](https://huggingface.co/ByteDance-Seed/Stable-DiffCoder-8B-Base)   |  Pretrained on our model-centric code data.  |
+| 👉 **Stable-DiffCoder-8B-Instruct**  | 8K    | 🤗 [Model](https://huggingface.co/ByteDance-Seed/Stable-DiffCoder-8B-Instruct)   |  Instruction-tuned for alignment with user intent. |
+## Requirements
+Current (v5.3.0) `transformers` is available for inference:
+```bash
+pip install transformers~=5.3.0
+```
+## Explanation of Inference Parameters
+- `steps`: Number of steps for diffusion generation
+- `gen_length`: Maximum length of the generated output
+- `block_length`: Length of the diffusion block, with a default value of 4
+- `temperature`: Temperature for generation, with a default value of 0.0
+- `remasking`: Remasking strategy, optional values are 'low_confidence' or 'random', default value is 'low_confidence' (for principle, refer to [LLADA](https://github.com/ML-GSAI/LLaDA))
+- `tokenizer`: Tokenizer used for text encoding and decoding
+- `shift`: Whether to shift the output to the right by one position (similar to AutoRegressive/AR), default value is False
+- `threshold`: Threshold for decoding (range: 0-1.0), default value is None; a smaller value results in faster decoding speed (for principle, refer to [Fast-DLLM](https://github.com/NVlabs/Fast-dLLM))
+- `eos_id`: ID of the end-of-sequence token, default value is `tokenizer.eos_token_id`
+## Quickstart
+Here is a simple example demonstrating how to load the model and generate code.
+```python
+from transformers import AutoTokenizer, AutoModelForCausalLM
+import torch
+device = 'cuda'
+model = AutoModelForCausalLM.from_pretrained('ByteDance-Seed/Stable-DiffCoder-8B-Instruct', trust_remote_code=True, torch_dtype=torch.bfloat16).to(device).eval()
+tokenizer = AutoTokenizer.from_pretrained('ByteDance-Seed/Stable-DiffCoder-8B-Instruct', trust_remote_code=True)
+prompt = 'Write a quick sort algorithm.'
+m = [{"role": "user", "content": prompt}, ]
+prompt = tokenizer.apply_chat_template(m, add_generation_prompt=True, tokenize=False)
+input_ids = tokenizer(prompt)['input_ids']
+input_ids = torch.tensor(input_ids).to(device).unsqueeze(0)
+out = model.generate(input_ids, steps=512, gen_length=512, block_length=4, temperature=0., remasking='low_confidence', tokenizer=tokenizer, shift=False, threshold=None, eos_id=tokenizer.eos_token_id)
+print(tokenizer.decode(out[0][input_ids.shape[1]:], skip_special_tokens=True))
+```
 ## Evaluation
+Stable-DiffCoder-8B-Instruct has been evaluated on a wide range of coding tasks, including code generation, code reasoning, code editing, achieving stronger performance than
+a wide range of ∼8B ARs and DLLMs,
+- Compared with ∼8B AR models：
+|             Model             | HumanEval | MBPP | MHPP | BigCodeBench (Full) | BigCodeBench (Hard) | LiveCodeBench (v5)        |
+|:-----------------------------:|:---------:|:----:|:----:|:-------------------:|:-------------------:|:-------------------------:|
+|     CodeLlama-7B-Instruct     |    40.9   | 54.0 |  6.7 |         25.7        |         4.1         |            3.6            |
+|  DeepSeek-Coder-6.7B-Instruct |    74.4   | 74.9 | 20.0 |         43.8        |         15.5        |            9.6            |
+|      CodeQwen1.5-7B-Chat      |    83.5   | 77.7 | 17.6 |         43.6        |         15.5        |            3.0            |
+|        Yi-Coder-9B-Chat       |    82.3   | 82.0 | 26.7 |         49.0        |         17.6        |            17.5           |
+|     Llama-3.1-8B-Instruct     |    68.3   | 70.1 | 17.1 |         40.5        |         13.5        |            11.5           |
+|     OpenCoder-8B-Instruct     |    83.5   | 79.1 | 30.5 |         50.9        |         18.9        |            17.1           |
+|   Qwen2.5-Coder-7B-Instruct   |  **88.4** | 83.5 | 26.7 |         48.8        |         20.3        |            17.3           |
+|            Qwen3-8B           |    84.8   | 77.0 | 32.8 |         51.7        |         23.0        |            23.5           |
+| Seed-Coder-8B-Instruct        |    84.8   | 85.2 | 36.2 |         53.3        |         26.4        |          **24.7**         |
+| Stable-DiffCoder-8B-Instruct  |    86.6   | **85.7** | **42.4** | **54.8**    |       **31.8**      |            23.5           |
+- Compared with ∼8B DLLM models：
+|             Model             | HumanEval | HumanEval+| MBPP | MBPP+| BigCodeBench (Full) |
+|:-----------------------------:|:---------:|:---------:|:----:|:----:|:-------------------:|
+|     LLaDA-8B-Instruct         |    49.4   |    -      | 41.0 | -    |         16.5        |
+|     Dream-7B-Instruct         |    63.4   |    -      | 68.3 | -    |         10.6        |
+|    LLaDA-MoE-7B-Instruct      |    61.6   |    -      | 70.0 | -    |         20.4        |
+|        Fast-dLLMv2            |    43.9   |    40.2   | 50.0 | 41.3 |         49.0        |
+|     DiffuCoder-7B-Instruct    |    72.0   |    65.2   | 75.1 | 61.9 |         35.7        |
+|     Dream-Coder-7B-Instruct   |    82.9   |     -     | 79.6 | -    |         37.1        |
+|         SDAR-8B-Chat          |    78.7   |    -      | 72.0 | -    |         -           |
+|        WeDLM-8B-Chat          |    80.5   |    73.8   | 70.5 | -    |         -           |
+| Stable-DiffCoder-8B-Instruct  | **86.6**  |  **82.3** |**85.7**|**72.8**|   **54.8**      |
+For detailed benchmark performance, please refer to our [📑 Technical Report](https://github.com/ByteDance-Seed/Stable-DiffCoder/blob/master/Stable_DiffCoder.pdf).
+## License
+This project is licensed under the MIT License. See the [LICENSE file](https://github.com/ByteDance-Seed/Stable-DiffCoder/blob/master/LICENSE) for details.
+## Citation
+If you find our work helpful, feel free to give us a cite.
+```
+@misc{fan2026stablediffcoderpushingfrontiercode,
+      title={Stable-DiffCoder: Pushing the Frontier of Code Diffusion Large Language Model},
+      author={Chenghao Fan and Wen Heng and Bo Li and Sichen Liu and Yuxuan Song and Jing Su and Xiaoye Qu and Kai Shen and Wei Wei},
+      year={2026},
+      eprint={2601.15892},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2601.15892},
+}
+```