Langchain-Chatchat is an open-source RAG and search tool published on GitHub by chatchat-space. It has 39k GitHub stars and 6.3k forks, and was last updated in November 2025. It is also listed under Chat UIs.
“Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain”
— chatchat-space, project description on GitHub
Details
| Category | RAG & Search |
|---|---|
| GitHub stars | 38,693 |
| Forks | 6,255 |
| Language | Python |
| License | Apache-2.0 |
| Last updated | |
| Owner | chatchat-space |
| Repository | chatchat-space/Langchain-Chatchat |
| Also listed in | Chat UIs |
Tags
chatbotchatchatchatglmchatgptembeddingfaissfastchatgpt
Repository facts from the GitHub public API, refreshed October 18, 2026. The quoted tagline is written by the project owner; the summary above is generated from public facts.