head to head · open source
LibreChat vs Leon
LibreChat has 44,217 GitHub stars, 9,087 forks, 732 open issues and last shipped yesterday. Leon has 17,518 stars, 1,469 forks, 112 open issues and last shipped yesterday. LibreChat leads on adoption by 152% (44,217 vs 17,518 stars). LibreChat is written in TypeScript under MIT; Leon is written in TypeScript under MIT. LibreChat has attracted 21% as many forks as stars, Leon 8%. LibreChat 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.
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Side by side
| LibreChat | Leon | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 18K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 9.1K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LibreChat if
- You weight community size — 44K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Leon if
- You want the Leon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Leon fits your workflow better
About LibreChat
LibreChat is an open source, self hostable chat interface designed as an enhanced ChatGPT clone. It unifies access to multiple AI models—including OpenAI, Anthropic, Google Gemini, DeepSeek, Mistral, AWS Bedrock, Azure OpenAI, and others—within a single web application. Built in TypeScript, it supports real time streaming, multi model switching, and advanced agent workflows while providing features like message search, artifacts, code interpreter, and secure multi user authentication.
read the full LibreChat overview →
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.
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Frequently asked questions
Is LibreChat or Leon more popular?
LibreChat has 44,217 GitHub stars and Leon has 17,518. LibreChat has the larger community by that measure.
Are LibreChat and Leon free?
Both are open source. LibreChat is licensed under MIT and Leon under MIT. Neither carries a licence fee.
What is the difference between LibreChat and Leon?
LibreChat is written in TypeScript and Leon 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, LibreChat or Leon?
Choose LibreChat if you want the larger community (44,217 stars) or its MIT licence terms. Choose Leon if its feature set, stack or MIT licence fits better. Both are self-hostable.