head to head · open source
Leon vs ChuanhuChatGPT
Leon has 17,518 GitHub stars, 1,469 forks, 112 open issues and last shipped yesterday. ChuanhuChatGPT has 15,271 stars, 2,196 forks, 129 open issues and last shipped 2 days ago. Leon leads on adoption by 15% (17,518 vs 15,271 stars). Leon is written in TypeScript under MIT; ChuanhuChatGPT is written in Python under GPL-3.0. Leon has attracted 8% as many forks as stars, ChuanhuChatGPT 14%. Leon was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chatbot), 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.
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Side by side
| Leon | ChuanhuChatGPT | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 15K |
| License | MIT | GPL-3.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 1.5K | ⑂ 2.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Leon if
- You weight community size — 18K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick ChuanhuChatGPT if
- You want the ChuanhuChatGPT feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and ChuanhuChatGPT fits your workflow better
About Leon
Leon is open source personal AI assistant. It lives in Node.js and TypeScript ecosystem, under AI Interaction & Interfaces category. Project builds around tools, context, memory, and agentic execution. It aims to stay practical, privacy aware, and grounded in real environment. Leon can operate locally, use dedicated tools instead of relying on free form guessing, and complete tasks from start to finish across deterministic workflows and agent style execution.
About ChuanhuChatGPT
ChuanhuChatGPT (川虎 Chat) is a free, GPL 3.0 Python and Gradio web interface that puts the ChatGPT API and more than a dozen other hosted and locally deployed large language models behind one self hostable chat UI, built for individuals and small teams who want their own front end instead of a vendor's.
read the full ChuanhuChatGPT overview →
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Frequently asked questions
Is Leon or ChuanhuChatGPT more popular?
Leon has 17,518 GitHub stars and ChuanhuChatGPT has 15,271. Leon has the larger community by that measure.
Are Leon and ChuanhuChatGPT free?
Both are open source. Leon is licensed under MIT and ChuanhuChatGPT under GPL-3.0. Neither carries a licence fee.
What is the difference between Leon and ChuanhuChatGPT?
Leon is written in TypeScript and ChuanhuChatGPT in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Leon or ChuanhuChatGPT?
Choose Leon if you want the larger community (17,518 stars) or its MIT licence terms. Choose ChuanhuChatGPT if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.