comfyanonymous
Original creator
Powerful node-based UI for Stable Diffusion and other AI image models — build custom generation pipelines with a visual graph editor.
Free·AI Generation·Image·Open Source·Stable Diffusion
Free·AI Generation·Image·Open Source·Stable Diffusion
What is ComfyUI?
ComfyUI is the most powerful open-source UI for running Stable Diffusion and other AI image generation models. Instead of simple prompt boxes, ComfyUI gives you a node-based graph editor where every step of the generation process — model loading, sampling, encoding, upscaling, LoRA application — is a visible, connectable node. You can build any workflow imaginable: img2img pipelines, inpainting chains, ControlNet rigs, video generation, and more.
Everything runs locally on your GPU (NVIDIA, AMD, or Apple Silicon). The community has built thousands of custom nodes extending ComfyUI with new models and capabilities. Free and open-source.
Features
- Node-based visual workflow editor
- Supports Stable Diffusion, Flux, and more
- Fully local — runs on your GPU
- Custom pipelines via drag-and-drop nodes
- Thousands of community nodes and workflows
- No coding required
FAQs
Common questions about ComfyUI
Is ComfyUI free?
Yes — completely free and open-source. You need your own GPU and model files.
What GPU do I need?
NVIDIA GPUs with CUDA work best. AMD (ROCm) and Apple Silicon (MPS) are also supported.
What models does it support?
Stable Diffusion (1.5, XL), Flux, SDXL, ControlNet, and hundreds more via community nodes.
Insights
Traffic and momentum for ComfyUI
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Videos
Official videos and tutorials for ComfyUI.
24 tutorials
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Team
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