head to head · open source
ComfyUI vs mercury-agent
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. mercury-agent has 3,160 stars, 340 forks, 60 open issues and last shipped yesterday. ComfyUI leads on adoption by 4,139% (133,963 vs 3,160 stars). ComfyUI is written in Python under GPL-3.0; mercury-agent is written in TypeScript under MIT. ComfyUI has attracted 12% as many forks as stars, mercury-agent 11%. 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 | mercury-agent | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 3.2K |
| License | GPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 16K | ⑂ 340 |
| 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 mercury-agent if
- You want the mercury-agent feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and mercury-agent 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 mercury-agent
mercury agent is an open source AI agent written in TypeScript and licensed under MIT. It lives in the AI & Machine Learning / AI Interaction & Interfaces ecosystem, with topics ai agent, ai assistant, and llm. The project provides a soul driven agent that uses tools, keeps memory, and connects through CLI, Telegram, or Web.
read the full mercury-agent overview →
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Frequently asked questions
Is ComfyUI or mercury-agent more popular?
ComfyUI has 133,963 GitHub stars and mercury-agent has 3,160. ComfyUI has the larger community by that measure.
Are ComfyUI and mercury-agent free?
Both are open source. ComfyUI is licensed under GPL-3.0 and mercury-agent under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and mercury-agent?
ComfyUI is written in Python and mercury-agent 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 mercury-agent?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose mercury-agent if its feature set, stack or MIT licence fits better. Both are self-hostable.