# ComfyUI — Node-Based AI Image Generation

> The most powerful modular AI image generation GUI with a node/graph editor. Supports Stable Diffusion, Flux, SDXL, ControlNet, and 1000+ custom nodes. 107K+ stars.

## Install

Save in your project root:

## Quick Use

```bash
git clone https://github.com/comfyanonymous/ComfyUI.git
cd ComfyUI
pip install -r requirements.txt
python main.py
```

Open `http://127.0.0.1:8188` in your browser.

---

## Intro

ComfyUI is the most powerful and modular AI image generation tool, built as a node-based graph editor. Design complex image generation workflows by connecting nodes — models, prompts, samplers, ControlNet, LoRA, upscalers, and more. Supports Stable Diffusion 1.5/2.1/XL/3, Flux, and hundreds of custom nodes from the community. 107,000+ GitHub stars, the most popular Stable Diffusion UI.

**Best for**: AI artists, designers, and developers building image generation pipelines
**Works with**: Stable Diffusion, SDXL, Flux, ControlNet, LoRA, IP-Adapter

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## Key Features

### Node-Based Workflow
Visual graph editor — drag, connect, and configure nodes to build any image pipeline. Save and share workflows as JSON files.

### Model Support
- Stable Diffusion 1.5, 2.1, XL, 3.0
- Flux (Dev, Schnell)
- ControlNet, IP-Adapter, T2I-Adapter
- LoRA, LyCORIS, Hypernetworks
- Upscale models (ESRGAN, SwinIR)

### 1000+ Custom Nodes
Community-built extensions: AnimateDiff (video), FaceRestore, Segment Anything, InstantID, and many more via ComfyUI Manager.

### API & Automation
Full REST API for headless generation. Queue prompts, get results programmatically:
```python
import requests
requests.post("http://127.0.0.1:8188/prompt", json={"prompt": workflow})
```

### Performance
- GPU-optimized with automatic memory management
- Queue system for batch generation
- Supports NVIDIA, AMD, Apple Silicon

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### FAQ

**Q: What is ComfyUI?**
A: A node-based AI image generation GUI and backend with 107K+ GitHub stars. Build complex Stable Diffusion workflows visually by connecting nodes. The most popular open-source image generation tool.

**Q: Is ComfyUI free?**
A: Yes, fully open-source under GPL-3.0. Requires a GPU (NVIDIA recommended) and locally-downloaded model weights.

---

## Source & Thanks

> Created by [Comfy-Org](https://github.com/Comfy-Org). Licensed under GPL-3.0.
> [Comfy-Org/ComfyUI](https://github.com/Comfy-Org/ComfyUI) — 107,000+ GitHub stars

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Source: https://tokrepo.com/en/workflows/02888d06-d950-42f4-bc45-960c1f604ee4
Author: AI Open Source