head to head · open source
LibreChat vs FastGPT
LibreChat has 44,418 GitHub stars, 9,122 forks, 732 open issues and last shipped today. FastGPT has 29,694 stars, 7,319 forks, 172 open issues and last shipped today. LibreChat leads on adoption by 50% (44,418 vs 29,694 stars). LibreChat is written in TypeScript under MIT; FastGPT is written in TypeScript under a custom or non-standard licence. LibreChat has attracted 21% as many forks as stars, FastGPT 25%. LibreChat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (claude, deepseek), 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 | FastGPT | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 30K |
| License | MIT | Custom / other |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 9.1K | ⑂ 7.3K |
| 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 FastGPT if
- You want the FastGPT feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and FastGPT 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 FastGPT
FastGPT is an open source AI knowledge base platform built on large language models (LLMs). It provides integrated tools for data ingestion, vector retrieval (RAG), and visual workflow orchestration, enabling users to construct and deploy question answering applications without writing extensive backend code. The platform runs on Next.js and supports integration with multiple LLM providers including OpenAI, Claude, DeepSeek, Qwen, and others.
read the full FastGPT overview →
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Frequently asked questions
Is LibreChat or FastGPT more popular?
LibreChat has 44,418 GitHub stars and FastGPT has 29,694. LibreChat has the larger community by that measure.
Are LibreChat and FastGPT free?
Both are open source. LibreChat is licensed under MIT, and FastGPT has no licence declared in this registry. Both are free to self-host.
What is the difference between LibreChat and FastGPT?
LibreChat is written in TypeScript and FastGPT 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 FastGPT?
Choose LibreChat if you want the larger community (44,418 stars) or its MIT licence terms. Choose FastGPT if its feature set, stack or Custom / other licence fits better. Both are self-hostable.