Langchain-Chatchat
A fully offline knowledge base solution that ensures absolute data security, making it suitable for highly regulated environments such as government and finance sectors.
📋 Info
| GitHub Stars | ⭐ 38.1k Stars |
| License | Apache-2.0 |
| Language | Python |
| Version | 3.0.0 |
| Updated | 2026-05-20 |
📖 Overview
Langchain-Chatchat is a fully offline knowledge base Q&A system built on LangChain. Its key advantages include 100% offline operation, ensuring no data transmission over the network. It supports local models such as ChatGLM, Qwen, and DeepSeek, along with local vector databases like Chroma, FAISS, and Milvus. It can be deployed in completely isolated internal network environments. The interface has been optimized for Chinese users, and it benefits from an active developer community in China. It is suitable for industries such as government services, finance, and defense that require extremely high levels of data security.
✨ Features
- 100% offline operation — data remains within the internal network.
- Local model + local vector database
- WebUI and API dual modes
- It can be deployed in a completely isolated internal network environment.
- Optimized Chinese processing along with an active domestic community.
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