README.md

---
base_model:
- inclusionAI/LLaDA2.0-mini
license: apache-2.0
library_name: transformers
pipeline_tag: text-generation
---

<div align="center">
<h1>🚀 DMax: Aggressive Parallel Decoding for dLLMs</h1>
  <div align="center">
  <a href="https://github.com/czg1225/DMax/blob/main/LICENSE">
    <img alt="Apache" src="https://img.shields.io/badge/License-Apache-4E94CE.svg">
  </a>
  <a href="https://arxiv.org/abs/2604.08302">
    <img src="https://img.shields.io/badge/Paper-Arxiv-darkred.svg" alt="Paper">
  </a>
  <a href="https://github.com/czg1225/DMax">
    <img src="https://img.shields.io/badge/GitHub-Code-blue.svg?logo=github&" alt="GitHub">
  </a>
</div>
</div>

DMax is a new paradigm for efficient diffusion language models (dLLMs) that enables aggressive decoding parallelism while preserving generation quality. This repository hosts **DMax-16B**, a highly parallel general-purpose diffusion language model (dLLM) capable of handling code generation, mathematical reasoning, and daily conversation.


## 💪 Highlights

- **Aggressive Decoding Parallelism**: Achieves 6.0 TPF on math and reasoning tasks and 6.6 TPF on code tasks while preserving accuracy.
- **Self-Revising dLLM**: Extends a pretrained MDLM into a UDLM with an intrinsic ability to revise its own erroneous predictions during decoding.
- **Soft Parallel Decoding**: Uses interpolation between mask and token embeddings to propagate confidence priors from previous steps.

<div align="center">
  <img src="assets/tradeoff.png" width="100%" />
  <br>
  <em>Superior Parallelism-Accuracy Trade-off, Increased TPF with Maintained Accuracy.</em>
</div>


## 💻 Model and Datasets

| Model | Description | Source Model | Link |
| --- | --- | --- | --- |
| 🤖 DMax-16B | Highly parallel general-purpose dLLM. | LLaDA-2.0-mini | [HF](https://huggingface.co/Zigeng/DMax-16B) |
| 🤖 DMax-Math-16B | Highly parallel dLLM for math and reasoning. | LLaDA-2.0-mini | [HF](https://huggingface.co/Zigeng/DMax-Math-16B) |
| 🤖 DMax-Coder-16B | Highly parallel dLLM for code generation. | LLaDA-2.0-mini | [HF](https://huggingface.co/Zigeng/DMax-Coder-16B) |

| Dataset | Description | Link |
| --- | --- | --- |
| 📊 DMax-Math-Training-Data | math trajectories generated by LLaDA-2.0-mini | [HF](https://huggingface.co/datasets/Zigeng/DMax-LLaDA-2.0-Mini-Math-Trajectories) |
| 📊 DMax-Code-Training-Data | code trajectories generated by LLaDA-2.0-mini | [HF](https://huggingface.co/datasets/Zigeng/DMax-LLaDA-2.0-Mini-Code-Trajectories) |



## 🚀 Quick Start

```python
import torch
from transformers import AutoModelForCausalLM
from transformers import AutoTokenizer

model = AutoModelForCausalLM.from_pretrained(
    "Zigeng/DMax-16B", trust_remote_code=True, device_map="cuda:0"
)
model = model.to(torch.bfloat16)
model.eval()
tokenizer = AutoTokenizer.from_pretrained("Zigeng/DMax-16B", trust_remote_code=True)

prompt = "A robe takes 2 bolts of blue fiber and half that much white fiber. How many bolts in total does it take?" + "
Let's think step by step
"

input_ids = tokenizer.apply_chat_template(
    [{"role": "user", "content": prompt}],
    add_generation_prompt=True,
    tokenize=True,
    return_tensors="pt",
)

nfe, generated_tokens = model.generate_spd(
    inputs=input_ids,
    gen_length=2048,
    block_length=32,
    threshold=0.5,
)

generated_answer = tokenizer.decode(
    generated_tokens[0],
    skip_special_tokens=True,
)

print(generated_answer)
print("nfe:",nfe,"token length",len(generated_tokens[0]))
```

## 📖 Experimental Results

![trade-off](assets/exp.png)

## 📚 Citation

```bibtex
@article{chen2026dmax,
  title={DMax: Aggressive Parallel Decoding for dLLMs},
  author={Chen, Zigeng and Fang, Gongfan and Ma, Xinyin and Yu, Ruonan and Wang, Xinchao},
  journal={arXiv preprint arXiv:2604.08302},
  year={2026}
}