---
title: 'DFlash-MLX-Universal: Interactive Demo'
emoji: 🚀
colorFrom: purple
colorTo: blue
sdk: gradio
sdk_version: 5.0.0
app_file: app.py
pinned: true
tags:
- ml-intern
---

# 🚀 DFlash-MLX-Universal Demo

**Block Diffusion Speculative Decoding for Apple Silicon (MLX)**

This interactive demo showcases [DFlash](https://arxiv.org/abs/2602.06036) — a block diffusion model that accelerates LLM inference by **6×** on Apple Silicon with **lossless output**.

## What is DFlash?

- **Traditional speculative decoding**: Drafts 1 token at a time → 2-3× speedup
- **DFlash**: Drafts 16 tokens in parallel via diffusion → **6× speedup**
- **Key innovation**: Draft model conditions on target model's hidden states (KV injection)
- **Result**: Output identical to greedy autoregressive generation

## Demo Tabs

| Tab | What it does |
|-----|-------------|
| 🏃 **Quick Start** | Select a model, enter a prompt, generate code & see simulated results |
| 🛠️ **Convert Drafter** | Get the `uv` command to convert official drafters to MLX format |
| 🎓 **Training** | Code template to train custom drafters for unsupported models |
| 🖥️ **Server** | Commands to start an OpenAI-compatible local server |
| 📊 **Benchmarks** | Performance table: 6× speedup across 6 models |
| 📖 **Architecture** | Deep dive into how block diffusion + KV injection works |
| 📦 **Installation** | `uv` and `pip` setup instructions |

## Supported Models

- **Qwen3** (4B, 8B)
- **Qwen3.5** (4B, 9B, 27B)
- **Qwen3.6** (27B, 35B-A3B)
- **LLaMA-3.1** (8B)
- **Gemma-4** (31B)

## Quick Start (on your Mac)

```bash
# 1. Install uv
brew install uv

# 2. Clone and setup
git clone https://huggingface.co/tritesh/dflash-mlx-universal.git
cd dflash-mlx-universal
./setup_uv.sh

# 3. Convert a drafter
uv run python -m dflash_mlx.convert \
    --model z-lab/Qwen3-4B-DFlash-b16 \
    --output ./Qwen3-4B-DFlash-mlx

# 4. Generate
uv run python examples/qwen3_4b_demo.py
```

## Links

- **Paper**: [arXiv:2602.06036](https://arxiv.org/abs/2602.06036)
- **Repository**: [tritesh/dflash-mlx-universal](https://huggingface.co/tritesh/dflash-mlx-universal)
- **Package**: `dflash-mlx-universal` (PyPI compatible)