head to head · open source
ComfyUI vs Jan
ComfyUI has 133,792 GitHub stars, 15,838 forks, 4,894 open issues and last shipped yesterday. Jan has 44,546 stars, 3,037 forks, 521 open issues and last shipped yesterday. ComfyUI leads on adoption by 200% (133,792 vs 44,546 stars). ComfyUI is written in Python under GPL-3.0; Jan is written in TypeScript under a custom or non-standard licence. ComfyUI has attracted 12% as many forks as stars, Jan 7%. 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 | Jan | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 45K |
| License | GPL-3.0 | Custom / other |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 16K | ⑂ 3.0K |
| 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 Jan if
- You want the Jan feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and Jan 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 Jan
Jan is an open source desktop application that serves as a ChatGPT replacement, enabling users to run large language models (LLMs) locally on their machines or connect to cloud based providers like OpenAI and Anthropic. It is built with Tauri, TypeScript, and integrates llama.cpp for efficient local inference, targeting privacy conscious users who want full control over their AI workflows without sending data to third parties.
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Frequently asked questions
Is ComfyUI or Jan more popular?
ComfyUI has 133,792 GitHub stars and Jan has 44,546. ComfyUI has the larger community by that measure.
Are ComfyUI and Jan free?
Both are open source. ComfyUI is licensed under GPL-3.0, and Jan has no licence declared in this registry. Both are free to self-host.
What is the difference between ComfyUI and Jan?
ComfyUI is written in Python and Jan 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 Jan?
Choose ComfyUI if you want the larger community (133,792 stars) or its GPL-3.0 licence terms. Choose Jan if its feature set, stack or Custom / other licence fits better. Both are self-hostable.