🧰
Open Source Toolkit

Know how to use it before you click: online, self-hosted, desktop, CLI

中文

LangChain

langchain-ai/langchain
Library Not a standalone app — install it into your own project and call it from code.

The agent engineering platform.

AI agentFrameworkDeveloper
LangChain website screenshot

From the README

LangChain is a framework for building agents and LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves.

Stars
★ 146.9k
Language
Python
License
MIT
Last updated
2026-09-23
Category
AI agents
Section
General