head to head · open source
ComfyUI vs Onyx
ComfyUI has 144,907 GitHub stars, 17,244 forks, 4,894 open issues and last shipped yesterday. Onyx has 33,195 stars, 4,696 forks, 451 open issues and last shipped yesterday. ComfyUI leads on adoption by 337% (144,907 vs 33,195 stars). ComfyUI is written in Python under GPL-3.0; Onyx is written in Python under a custom or non-standard licence. ComfyUI has attracted 12% as many forks as stars, Onyx 14%. Onyx was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, python), 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 | Onyx | |
|---|---|---|
| GitHub stars | ★ 145K | ★ 33K |
| License | GPL-3.0 | Custom / other |
| Written in | Python | Python |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 17K | ⑂ 4.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 145K 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 Onyx if
- You want the Onyx feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Python
- You evaluated both and Onyx fits your workflow better
About ComfyUI
ComfyUI The most powerful and modular AI engine for content creation. [![Website][website shield]][website url] [![Dynamic JSON Badge][discord shield]][discord url] [![Twitter][twitter shield]][twitter url] [![Matrix][matrix shield]][matrix url] [![][github release shield]][github release link] [![][github release date shield]][github release link] [![][github downloads shield]][github downloads link] [![][github downloads latest shield]][github downloads link] [matrix shield]: [matrix url]: [website shield]: [website url]: [discord shield]: [discord url]: [twitter shield]: [twitter url]: [github release…
read the full ComfyUI overview →
About Onyx
Onyx The Open Source AI Platform Onyx is the application layer for LLMs bringing a feature rich interface that can be easily hosted by anyone. Onyx enables LLMs through advanced capabilities like RAG, web search, code execution, file creation, deep research and more. Connect your applications with over 50+ indexing based connectors provided out of the box or via MCP. [!TIP] Deploy with a single command: ⭐ Features 🔍 Agentic RAG: Get best in class search and answer quality based on hybrid index + AI Agents for information retrieval Benchmark to release soon! 🔬 Deep Research: Get in depth reports with a multi…
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Frequently asked questions
Is ComfyUI or Onyx more popular?
ComfyUI has 144,907 GitHub stars and Onyx has 33,195. ComfyUI has the larger community by that measure.
Are ComfyUI and Onyx free?
Both are open source. ComfyUI is licensed under GPL-3.0, and Onyx has no licence declared in this registry. Both are free to self-host.
What is the difference between ComfyUI and Onyx?
ComfyUI is written in Python and Onyx 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 Onyx?
Choose ComfyUI if you want the larger community (144,907 stars) or its GPL-3.0 licence terms. Choose Onyx if its feature set, stack or Custom / other licence fits better. Both are self-hostable.