head to head · open source
LibreChat vs Onyx
LibreChat has 44,255 GitHub stars, 9,097 forks, 732 open issues and last shipped yesterday. Onyx has 32,149 stars, 4,478 forks, 451 open issues and last shipped yesterday. LibreChat leads on adoption by 38% (44,255 vs 32,149 stars). LibreChat is written in TypeScript under MIT; Onyx is written in Python under a custom or non-standard licence. LibreChat has attracted 21% as many forks as stars, Onyx 14%. LibreChat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, chatgpt), 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 | Onyx | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 32K |
| License | MIT | Custom / other |
| Written in | TypeScript | Python |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 9.1K | ⑂ 4.5K |
| 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 Onyx if
- You want the Onyx feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Python
- You evaluated both and Onyx 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 Onyx
Onyx is an open source AI application layer that gives teams a self hostable chat interface with retrieval augmented generation over their own company data and more than 50 indexing connectors.
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Frequently asked questions
Is LibreChat or Onyx more popular?
LibreChat has 44,255 GitHub stars and Onyx has 32,149. LibreChat has the larger community by that measure.
Are LibreChat and Onyx free?
Both are open source. LibreChat is licensed under MIT, and Onyx has no licence declared in this registry. Both are free to self-host.
What is the difference between LibreChat and Onyx?
LibreChat is written in TypeScript and Onyx 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, LibreChat or Onyx?
Choose LibreChat if you want the larger community (44,255 stars) or its MIT licence terms. Choose Onyx if its feature set, stack or Custom / other licence fits better. Both are self-hostable.