head to head · open source
stable-diffusion-webui vs ComfyUI
stable-diffusion-webui has 165,041 GitHub stars, 33,088 forks, 2,510 open issues and last shipped 7 months ago. ComfyUI has 136,922 stars, 16,300 forks, 4,894 open issues and last shipped yesterday. stable-diffusion-webui leads on adoption by 21% (165,041 vs 136,922 stars). stable-diffusion-webui is written in Python under AGPL-3.0; ComfyUI is written in Python under GPL-3.0. stable-diffusion-webui has attracted 20% as many forks as stars, ComfyUI 12%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai, pytorch, stable-diffusion), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| stable-diffusion-webui | ComfyUI | |
|---|---|---|
| GitHub stars | ★ 165K | ★ 137K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-03-02 | 2026-10-11 |
| Forks | ⑂ 33K | ⑂ 16K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick stable-diffusion-webui if
- You weight community size — 165K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ComfyUI if
- You want the ComfyUI feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and ComfyUI fits your workflow better
About stable-diffusion-webui
stable diffusion webui is a Gradio based web interface for the Stable Diffusion image generation models, aimed at artists, hobbyists, and researchers who want text to image and image to image workflows in a browser without writing code.
read the full stable-diffusion-webui overview →
About ComfyUI
ComfyUI is a GPL 3.0 licensed Python and PyTorch node graph application, local API, and backend for running diffusion models across image, video, audio, 3D, and text workflows, built for visual professionals who want control over every model, parameter, and output, and for developers who embed those workflows into production pipelines.
read the full ComfyUI overview →
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Frequently asked questions
Is stable-diffusion-webui or ComfyUI more popular?
stable-diffusion-webui has 165,041 GitHub stars and ComfyUI has 136,922. stable-diffusion-webui has the larger community by that measure.
Are stable-diffusion-webui and ComfyUI free?
Both are open source. stable-diffusion-webui is licensed under AGPL-3.0 and ComfyUI under GPL-3.0. Neither carries a licence fee.
What is the difference between stable-diffusion-webui and ComfyUI?
stable-diffusion-webui is written in Python and ComfyUI in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, stable-diffusion-webui or ComfyUI?
Choose stable-diffusion-webui if you want the larger community (165,041 stars) or its AGPL-3.0 licence terms. Choose ComfyUI if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.