head to head · open source
ComfyUI vs CopilotKit
ComfyUI has 144,907 GitHub stars, 17,244 forks, 4,894 open issues and last shipped yesterday. CopilotKit has 38,499 stars, 4,802 forks, 295 open issues and last shipped yesterday. ComfyUI leads on adoption by 276% (144,907 vs 38,499 stars). ComfyUI is written in Python under GPL-3.0; CopilotKit is written in TypeScript under MIT. ComfyUI has attracted 12% as many forks as stars, CopilotKit 12%. 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.
← all 20902 open source comparisons
Side by side
| ComfyUI | CopilotKit | |
|---|---|---|
| GitHub stars | ★ 145K | ★ 38K |
| License | GPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 17K | ⑂ 4.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 145K 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 CopilotKit if
- You want the CopilotKit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and CopilotKit fits your workflow better
About ComfyUI
ComfyUI The most powerful and modular AI engine for content creation. [![Website][website shield]][website url] [![Dynamic JSON Badge][discord shield]][discord url] [![Twitter][twitter shield]][twitter url] [![Matrix][matrix shield]][matrix url] [![][github release shield]][github release link] [![][github release date shield]][github release link] [![][github downloads shield]][github downloads link] [![][github downloads latest shield]][github downloads link] [matrix shield]: [matrix url]: [website shield]: [website url]: [discord shield]: [discord url]: [twitter shield]: [twitter url]: [github release…
read the full ComfyUI overview →
About CopilotKit
CopilotKit Docs · Examples · CopilotKit Intelligence · Discord Build agent native applications — on any framework, on any surface. Generative UI, shared state, and human in the loop workflows for React, Angular, Vue, React Native — and in Slack and Microsoft Teams. What is CopilotKit? CopilotKit is a best in class SDK for building full stack agentic applications, Generative UI, and chat applications. What started as a React library is now the horizontal layer between your agents and your users : the same agent can power your web app, your mobile app, and your team's Slack or Microsoft Teams workspace. We are the…
read the full CopilotKit overview →
More in AI & Machine Learning
Related comparisons
More AI Interaction & Interfaces projects
Compare either of these against the rest of the AI Interaction & Interfaces field.
Frequently asked questions
Is ComfyUI or CopilotKit more popular?
ComfyUI has 144,907 GitHub stars and CopilotKit has 38,499. ComfyUI has the larger community by that measure.
Are ComfyUI and CopilotKit free?
Both are open source. ComfyUI is licensed under GPL-3.0 and CopilotKit under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and CopilotKit?
ComfyUI is written in Python and CopilotKit 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 CopilotKit?
Choose ComfyUI if you want the larger community (144,907 stars) or its GPL-3.0 licence terms. Choose CopilotKit if its feature set, stack or MIT licence fits better. Both are self-hostable.