head to head · open source
ComfyUI vs FLUJO
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. FLUJO has 630 stars, 88 forks, 26 open issues and last shipped yesterday. ComfyUI leads on adoption by 21,164% (133,963 vs 630 stars). ComfyUI is written in Python under GPL-3.0; FLUJO is written in TypeScript under MIT. ComfyUI has attracted 12% as many forks as stars, FLUJO 14%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | FLUJO | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 630 |
| License | GPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 16K | ⑂ 88 |
| 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 FLUJO if
- You want the FLUJO feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and FLUJO 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 FLUJO
FLUJO is an open source, local first visual builder for multi agent AI workflows that lets you connect models and apps, build agents as step by step recipes or expert visual flows, inspect every run, and expose those same agents through OpenAI compatible and MCP endpoints, aimed at developers, automation builders, and technical teams that want their keys and data to stay under their own control.
read the full FLUJO overview →
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Frequently asked questions
Is ComfyUI or FLUJO more popular?
ComfyUI has 133,963 GitHub stars and FLUJO has 630. ComfyUI has the larger community by that measure.
Are ComfyUI and FLUJO free?
Both are open source. ComfyUI is licensed under GPL-3.0 and FLUJO under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and FLUJO?
ComfyUI is written in Python and FLUJO 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 FLUJO?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose FLUJO if its feature set, stack or MIT licence fits better. Both are self-hostable.