ComfyUI vs Stable Diffusion
ComfyUI: An open-source, node-based app for building advanced image and video AI workflows. Stable Diffusion: Open image models you can run on your own computer. Here is how they compare on features, pricing, platforms, pros and cons.
Quick verdict
ComfyUI
Best for: Advanced users who want full control over AI image pipelines.
Stands out for: Free and very flexible; Supports new models quickly.
Stable Diffusion
Best for: Tinkerers and developers who want full control and privacy.
Stands out for: Open models you can run offline; Huge community and add-ons.
Side-by-side comparison
| Visit comfy.org (opens in a new tab) | Visit stability.ai (opens in a new tab) | |
|---|---|---|
| What it is | An open-source, node-based app for building advanced image and video AI workflows. | Open image models you can run on your own computer. |
| Pricing | Open source | Open source |
| Free to use | Yes | Yes |
| Category | AI Image Generators | AI Image Generators |
| Editor rank | #9 in category | #10 in category |
| Made by | Comfy Org | Stability AI |
| Best for | Advanced users who want full control over AI image pipelines. | Tinkerers and developers who want full control and privacy. |
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ComfyUI vs Stable Diffusion: questions
Is ComfyUI better than Stable Diffusion?
Neither wins for everyone. Our editors rank ComfyUI slightly higher overall in AI Image Generators, but Stable Diffusion can be the better fit: Tinkerers and developers who want full control and privacy.
Which is free, ComfyUI or Stable Diffusion?
Both can be used without paying: ComfyUI is open source and Stable Diffusion is open source. Paid plans add more usage or features.
Can I use ComfyUI and Stable Diffusion together?
Yes. Many people keep both and pick per task, for example build a repeatable workflow for product images with ComfyUI, and run image generation on your own PC with Stable Diffusion.