head to head · open source
Leon vs ChuanhuChatGPT
Leon has 17,629 GitHub stars, 1,479 forks, 112 open issues and last shipped yesterday. ChuanhuChatGPT has 15,251 stars, 2,179 forks, 129 open issues and last shipped 2 months ago. Leon leads on adoption by 16% (17,629 vs 15,251 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 | 2026-11-02 | 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 Your open source personal AI assistant. I share Leon progress most regularly on X / @grenlouis Follow progress on X / @grenlouis · Website · Newsletter · Roadmap · Story ⚠️ Important Notice (as of 2026 03 29) [!IMPORTANT] Leon is currently focused on the 2.0 Developer Preview on the develop branch. The new documentation is not ready yet . The current docs site and older guides mostly reflect the legacy architecture. If you want the legacy, more stable pre agentic version of Leon, use the master branch. If you want to explore or contribute to Leon's new core, develop is the right place. The most accurate…
About ChuanhuChatGPT
简体中文 English 日本語 Russian 한국어 川虎 Chat 🐯 Chuanhu Chat 为ChatGPT等多种LLM提供了一个轻快好用的Web图形界面和众多附加功能 支持 DeepSeek R1 & GPT 4 · 基于文件问答 · LLM本地部署 · 联网搜索 · Agent 助理 · 支持 Fine tune 视频教程 · 2.0介绍视频 在线体验 · 一键部署 📢 新增：现已支持 GPT 5（含 GPT 5、GPT 5 mini、GPT 5 nano；400k 上下文、最多 128k 输出）。 目录 ✨ 5.0 重磅更新！ New! 全新的用户界面！精致得不像 Gradio，甚至有毛玻璃效果！ New! 适配了移动端（包括全面屏手机的挖孔/刘海），层级更加清晰。 New! 历史记录移到左侧，使用更加方便。并且支持搜索（支持正则）、删除、重命名。 New! 现在可以让大模型自动命名历史记录（需在设置或配置文件中开启）。 New! 现在可以将 川虎Chat 作为 PWA 应用程序安装，体验更加原生！支持 Chrome/Edge/Safari 等浏览器。 New! 图标适配各个平台，看起来更舒服。 New! 支持 Finetune（微调） GPT 3.5！ 支持模型 使用技巧 💪 强力功能 川虎助理 ：类似 AutoGPT，全自动解决你的问题； 在线搜索 ：ChatGPT 的数据太旧？给 LLM…
read the full ChuanhuChatGPT overview →
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Frequently asked questions
Is Leon or ChuanhuChatGPT more popular?
Leon has 17,629 GitHub stars and ChuanhuChatGPT has 15,251. 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 (17,629 stars) or its MIT licence terms. Choose ChuanhuChatGPT if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.