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ComfyUI vs Stable Diffusion WebUI (AUTOMATIC1111)
Short answer: ComfyUI and Stable Diffusion WebUI (AUTOMATIC1111) are both self-hostable alternatives to Midjourney. On activity, ComfyUI is the safer bet right now: Stable Diffusion WebUI (AUTOMATIC1111) had no push in the 231 days before our check. Pick Stable Diffusion WebUI (AUTOMATIC1111) if community size is your main criterion – it has 1.2× the stars. Pick ComfyUI if license terms matter to you (for example, you plan to modify it or offer it to others): GPL-3.0 is copyleft, while Stable Diffusion WebUI (AUTOMATIC1111)'s AGPL-3.0 is network copyleft.
Stable Diffusion WebUI (AUTOMATIC1111) has 1.2× the GitHub stars of ComfyUI (165.1k vs 139.1k). Stars measure popularity and community size, not quality. ComfyUI's last push was on 2026-10-19 (on the day of our check); Stable Diffusion WebUI (AUTOMATIC1111)'s last push was on 2026-03-02 (231 days before our check).
ComfyUI vs Stable Diffusion WebUI (AUTOMATIC1111) at a glance
| ComfyUI | Stable Diffusion WebUI (AUTOMATIC1111) | |
|---|---|---|
| GitHub stars | ★ 139.1k | ★ 165.1k |
| Forks | 16.5k | 33.7k |
| License | GPL-3.0 | AGPL-3.0 |
| License type | copyleft | network copyleft |
| Last push | 2026-10-19 on the day of our check | 2026-03-02 231 days before our check |
| Latest GitHub release | v0.42.1 2026-10-19 | v1.10.1 2025-02-09 |
| Main language | Python | Python |
| Archived | no | no |
| Repository | Comfy-Org/ComfyUI | AUTOMATIC1111/stable-diffusion-webui |
Data: GitHub REST API, checked 2026-10-19. Licenses verified manually against each project's license file. Self-hosting difficulty (Midjourney: medium) is our rating per use case and applies to both.
In their own words
ComfyUI (GitHub description): The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world.
Stable Diffusion WebUI (AUTOMATIC1111) (GitHub description): Stable Diffusion web UI
Which should you pick?
- On activity, ComfyUI is the safer bet right now: Stable Diffusion WebUI (AUTOMATIC1111) had no push in the 231 days before our check.
- Pick Stable Diffusion WebUI (AUTOMATIC1111) if community size is your main criterion – it has 1.2× the stars.
- Pick ComfyUI if license terms matter to you (for example, you plan to modify it or offer it to others): GPL-3.0 is copyleft, while Stable Diffusion WebUI (AUTOMATIC1111)'s AGPL-3.0 is network copyleft.
ComfyUI is GPL-3.0, Stable Diffusion WebUI (AUTOMATIC1111) is AGPL-3.0. Both are written mainly in Python.
FAQ
Which is more popular, ComfyUI or Stable Diffusion WebUI (AUTOMATIC1111)?
Stable Diffusion WebUI (AUTOMATIC1111) has 1.2× the GitHub stars of ComfyUI (165.1k vs 139.1k). Stars measure popularity and community size, not quality.
Are ComfyUI and Stable Diffusion WebUI (AUTOMATIC1111) actively maintained?
ComfyUI's last push was on 2026-10-19 (on the day of our check); Stable Diffusion WebUI (AUTOMATIC1111)'s last push was on 2026-03-02 (231 days before our check). Latest GitHub releases: ComfyUI v0.42.1 (2026-10-19), Stable Diffusion WebUI (AUTOMATIC1111) v1.10.1 (2025-02-09).
What licenses do ComfyUI and Stable Diffusion WebUI (AUTOMATIC1111) use?
ComfyUI: GPL-3.0 – copyleft (GPL/LGPL/MPL-style: share changes when you distribute the software). Stable Diffusion WebUI (AUTOMATIC1111): AGPL-3.0 – network copyleft (AGPL: if you run a modified version as a service for others, you must publish your changes).
Is ComfyUI or Stable Diffusion WebUI (AUTOMATIC1111) easier to self-host?
We rate self-hosting difficulty per use case, not per project: medium for Midjourney alternatives. Both need a server you maintain; check each project's install docs for the exact services (database, workers) it needs.
Should I pick ComfyUI or Stable Diffusion WebUI (AUTOMATIC1111)?
On activity, ComfyUI is the safer bet right now: Stable Diffusion WebUI (AUTOMATIC1111) had no push in the 231 days before our check. Pick Stable Diffusion WebUI (AUTOMATIC1111) if community size is your main criterion – it has 1.2× the stars. Pick ComfyUI if license terms matter to you (for example, you plan to modify it or offer it to others): GPL-3.0 is copyleft, while Stable Diffusion WebUI (AUTOMATIC1111)'s AGPL-3.0 is network copyleft.
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