head to head · open source
ComfyUI vs moltis
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. moltis has 2,866 stars, 348 forks, 83 open issues and last shipped 2 days ago. ComfyUI leads on adoption by 4,574% (133,963 vs 2,866 stars). ComfyUI is written in Python under GPL-3.0; moltis is written in Rust under MIT. ComfyUI has attracted 12% as many forks as stars, moltis 12%. 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 | moltis | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 2.9K |
| License | GPL-3.0 | MIT |
| Written in | Python | Rust |
| Last push | 2026-09-20 | 2026-09-18 |
| Forks | ⑂ 16K | ⑂ 348 |
| 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 moltis if
- You want the moltis feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and moltis 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 moltis
Moltis is a secure persistent personal agent server written in Rust and released under the MIT license. It lives in the Rust AI agent and self hosted assistant ecosystem, and it presents itself as one binary that runs on user owned hardware. The project targets a personal agent that can keep state across sessions, call language models from multiple providers, and expose its behavior through chat channels and tools without relying on a hosted service.
read the full moltis overview →
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Frequently asked questions
Is ComfyUI or moltis more popular?
ComfyUI has 133,963 GitHub stars and moltis has 2,866. ComfyUI has the larger community by that measure.
Are ComfyUI and moltis free?
Both are open source. ComfyUI is licensed under GPL-3.0 and moltis under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and moltis?
ComfyUI is written in Python and moltis in Rust. 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 moltis?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose moltis if its feature set, stack or MIT licence fits better. Both are self-hostable.