head to head · open source
ComfyUI vs AstrBot
ComfyUI has 133,792 GitHub stars, 15,838 forks, 4,894 open issues and last shipped yesterday. AstrBot has 40,668 stars, 2,929 forks, 1,516 open issues and last shipped yesterday. ComfyUI leads on adoption by 229% (133,792 vs 40,668 stars). ComfyUI is written in Python under GPL-3.0; AstrBot is written in Python under AGPL-3.0. ComfyUI has attracted 12% as many forks as stars, AstrBot 7%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai), 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
| ComfyUI | AstrBot | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 41K |
| License | GPL-3.0 | AGPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 16K | ⑂ 2.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 134K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick AstrBot if
- You want the AstrBot feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and AstrBot fits your workflow better
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 →
About AstrBot
AstrBot is an open source all in one Agent chatbot platform written in Python and licensed under AGPL 3.0. It integrates with mainstream instant messaging applications and provides conversational AI infrastructure for individuals, developers, and teams. The project lives in the AI and machine learning ecosystem, specifically the AI interaction and interfaces category, and it has been developed over roughly four years. Its repository carries 40,504 stars and 2,915 forks, and its documented homepage is astrbot.app. Topics attached to the project include agent, ai, chatbot, chatgpt, discord, docker, gemini, gpt, lla…
read the full AstrBot overview →
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Frequently asked questions
Is ComfyUI or AstrBot more popular?
ComfyUI has 133,792 GitHub stars and AstrBot has 40,668. ComfyUI has the larger community by that measure.
Are ComfyUI and AstrBot free?
Both are open source. ComfyUI is licensed under GPL-3.0 and AstrBot under AGPL-3.0. Neither carries a licence fee.
What is the difference between ComfyUI and AstrBot?
ComfyUI is written in Python and AstrBot 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, ComfyUI or AstrBot?
Choose ComfyUI if you want the larger community (133,792 stars) or its GPL-3.0 licence terms. Choose AstrBot if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.