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LangChain-Chatchat

Local knowledge base Q&A with LangChain, ChatGLM, Qwen and Llama models

★ 38,225 GitHub Apache-2.0 ragknowledge-baselangchainllmchatglmqwenllamadocument-qaself-hostedchinese RAG & Knowledge

Overview

LangChain-Chatchat (formerly LangChain-ChatGLM) is an open-source RAG and Agent application that enables you to chat with your local knowledge base using popular LLMs like ChatGLM, Qwen, and Llama. Built on LangChain, it provides a complete solution for document ingestion, vector storage, retrieval-augmented generation, and multi-agent conversations. With 38k+ GitHub stars, it supports multiple LLM backends, multiple embedding models, and features a polished WebUI for easy interaction. Perfect for enterprises and individuals wanting a fully private, self-hosted document Q&A system.

Requirements

Min vCPU
2
Min RAM
4096 MB
Min Disk
10 GB
Rec vCPU
4
Rec RAM
8192 MB
Rec Disk
20 GB

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Affiliate disclosure

Docker Compose

# Generated by Run This Ai — docker-compose.yml
services:
  langchain-chatchat:
    image: chatimage/chatchat:0.3.1.3-717e03e-20241109
    restart: unless-stopped
    ports:
      - 8080:8080
    volumes:
      - ./data/langchain-chatchat:/data

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Guides & articles

LangChain-Chatchat Quick Start: Deploy with Docker in 5 Minutes

Step-by-step guide to deploying LangChain-Chatchat with Docker. Pull the image, run the container, upload documents, and start asking questions.

Jun 28, 2026

LangChain-Chatchat: Your Private Document Q&A System

Build a fully private, self-hosted document Q&A system with LangChain-Chatchat. Supports ChatGLM, Qwen, Llama and more.

Jun 28, 2026