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Langchain-Chatchat: Build Custom AI Knowledge Assistants Fast

A powerful open-source RAG framework for founders wanting to create intelligent chatbots using local LLMs like ChatGLM and Llama. Turn your data into interactive AI tools.
38,120 stars6,212 forksPythonUpdated 11/10/2025100% free · open source
What it does

Langchain-Chatchat enables founders to build intelligent chatbots using local large language models like ChatGLM and Llama, turning their data into interactive AI tools.

When to use it
  • •You want to create a custom chatbot that leverages your own data and knowledge base.
  • •You need an AI-powered support tool that can understand and respond to user queries in a specific domain or industry.
  • •You prefer to keep your data and AI models local, rather than relying on cloud-based services.
Quick start
  1. 1Modify the `config.json` file to specify your local LLM model, such as ChatGLM or Llama.
  2. 2Create a new knowledge graph by running `python scripts/create_kg.py` and following the prompts.
  3. 3Train a new agent by running `python scripts/train_agent.py` with your specified model and knowledge graph.
  4. 4Test your chatbot by running `python scripts/chat.py` and interacting with the agent.
  5. 5Refine your chatbot's performance by tuning hyperparameters and adjusting the knowledge graph.
Ready-to-paste prompt
python scripts/chat.py -m ChatGLM -kg my_knowledge_graph.json -a my_agent.json

Topics

chatbot
chatchat
chatglm
chatgpt
embedding
faiss
fastchat
gpt
knowledge-base
langchain
langchain-chatglm
llama
llm
milvus
ollama
qwen
rag
retrieval-augmented-generation
streamlit
xinference
What's inside — free to inspect
No purchase needed

Read the entire source before you build — unlike paid marketplaces that hide it behind a buy button.

8
top-level files
6
folders
141.1M
repo size
Apache-2.0
license
Key files
README_en.md
README.md
File tree
.github/
docker/
docs/
libs/
markdown_docs/
tools/
.gitignore
.gitmodules
LICENSE
poetry.toml
pyproject.toml
README_en.md
README.md
release.py
Quick Actions
Details
Creator
chatchat-space
Language
Python
Category
support
Published
3/31/2023

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