head to head · open source
ComfyUI vs catai
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. catai has 500 stars, 39 forks, 2 open issues and last shipped 10 months ago. ComfyUI leads on adoption by 26,693% (133,963 vs 500 stars). ComfyUI is written in Python under GPL-3.0; catai is written in TypeScript under MIT. ComfyUI has attracted 12% as many forks as stars, catai 8%. 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 | catai | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 500 |
| License | GPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2025-11-16 |
| Forks | ⑂ 16K | ⑂ 39 |
| 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 catai if
- You want the catai feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and catai 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 catai
catai is an MIT licensed TypeScript command line tool that runs GGUF language models on your own computer and serves them through a chat interface and a small Node.js API, built for developers who want a private AI assistant without a hosted service.
read the full catai overview →
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Frequently asked questions
Is ComfyUI or catai more popular?
ComfyUI has 133,963 GitHub stars and catai has 500. ComfyUI has the larger community by that measure.
Are ComfyUI and catai free?
Both are open source. ComfyUI is licensed under GPL-3.0 and catai under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and catai?
ComfyUI is written in Python and catai in TypeScript. 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 catai?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose catai if its feature set, stack or MIT licence fits better. Both are self-hostable.