head to head · open source
LibreChat vs Onyx
LibreChat has 46,647 GitHub stars, 9,596 forks, 732 open issues and last shipped yesterday. Onyx has 33,170 stars, 4,692 forks, 451 open issues and last shipped yesterday. LibreChat leads on adoption by 41% (46,647 vs 33,170 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 | ★ 47K | ★ 33K |
| License | MIT | Custom / other |
| Written in | TypeScript | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.6K | ⑂ 4.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LibreChat if
- You weight community size — 47K 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 English · 中文 🚀 What's New in v0.8.8 rc2 Agent run control: Interrupt an Agent before visible answer text, steer runs with files and quoted excerpts, durably queue follow ups, and recover saved partial work with Keep going or Answer now . Agent activity: Optional generated labels group reasoning and tool work, fold completed groups into live phase cards, keep generated files visible, summarize multi step phases, and show the current reasoning direction. Human in the loop Agents: Stream up to four related questions, pause for input or tool approval, and resume durably. Unified Agent Builder: Configure…
read the full LibreChat overview →
About Onyx
Onyx The Open Source AI Platform Onyx is the application layer for LLMs bringing a feature rich interface that can be easily hosted by anyone. Onyx enables LLMs through advanced capabilities like RAG, web search, code execution, file creation, deep research and more. Connect your applications with over 50+ indexing based connectors provided out of the box or via MCP. [!TIP] Deploy with a single command: ⭐ Features 🔍 Agentic RAG: Get best in class search and answer quality based on hybrid index + AI Agents for information retrieval Benchmark to release soon! 🔬 Deep Research: Get in depth reports with a multi…
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Frequently asked questions
Is LibreChat or Onyx more popular?
LibreChat has 46,647 GitHub stars and Onyx has 33,170. 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 (46,647 stars) or its MIT licence terms. Choose Onyx if its feature set, stack or Custom / other licence fits better. Both are self-hostable.