head to head · open source
Open WebUI vs CopilotKit
Open WebUI has 157,498 GitHub stars, 22,901 forks, 294 open issues and last shipped yesterday. CopilotKit has 38,456 stars, 4,800 forks, 295 open issues and last shipped yesterday. Open WebUI leads on adoption by 310% (157,498 vs 38,456 stars). Open WebUI is written in Python under a custom or non-standard licence; CopilotKit is written in TypeScript under MIT. Open WebUI has attracted 15% as many forks as stars, CopilotKit 12%. Open WebUI 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
| Open WebUI | CopilotKit | |
|---|---|---|
| GitHub stars | ★ 157K | ★ 38K |
| License | Custom / other | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 23K | ⑂ 4.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Open WebUI if
- You weight community size — 157K stars and counting
- You want the Custom / other 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 Open WebUI
Open WebUI 👋 Open WebUI is a home for AI , a self hosted AI platform that's extensible , feature rich , user friendly, and built to run entirely offline . With support for Ollama and OpenAI compatible APIs , it gives you a powerful, provider agnostic interface for both local and cloud based models. Passionate about open source AI? Join our team → [!TIP] Looking for an Enterprise Plan? – Speak with Our Sales Team Today! For more information, be sure to check out our Open WebUI Documentation. Key Features of Open WebUI ⭐ 🚀 Effortless Setup : Install seamlessly via pip, uv, Docker, or Kubernetes (kubectl…
read the full Open WebUI 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 Open WebUI or CopilotKit more popular?
Open WebUI has 157,498 GitHub stars and CopilotKit has 38,456. Open WebUI has the larger community by that measure.
Are Open WebUI and CopilotKit free?
Both are open source. Open WebUI has no licence declared in this registry, and CopilotKit is licensed under MIT. Both are free to self-host.
What is the difference between Open WebUI and CopilotKit?
Open WebUI 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, Open WebUI or CopilotKit?
Choose Open WebUI if you want the larger community (157,498 stars) or its Custom / other licence terms. Choose CopilotKit if its feature set, stack or MIT licence fits better. Both are self-hostable.