The biggest developer community in GenAI
Learn alongside the 100K+ practitioners who are pushing the industry forward.
We help developers make the impossible, possible.
LangChain is the platform developers and enterprises choose
to build AI apps from prototype to production.
Mission
We're on a mission to make it easy to build the LLM apps of tomorrow, today. We build products that enable developers to go from an idea to working code in an afternoon and in the hands of users in days or weeks. We’re humbled to support 100k+ companies who choose to build with LangChain. And we built LangSmith to support all stages of the AI engineering lifecycle, to get applications into production faster.
Our small but mighty team based in San Francisco.
20M+
Monthly Downloads
100K+
Apps Powered
100K+
GitHub Stars
4K+
Contributors
Come join us
We’re hiring across many teams. Explore our open positions or read more about Careers at LangChain.
Read more about what we’re working on lately.
LangChain's Second Birthday
How LangChain has evolved — including our products, ecosystem, and community — over the past two years, and where we're headed.
Announcing LangGraph Cloud & LangGraph v0.1
Our new infrastructure for running agents at scale, LangGraph Cloud, is now available. We also have a new stable release of LangGraph, our framework for building agentic and multi-agent applications.
LangChain State of AI 2024
We dove into 2024 data on the AI ecosystem. The way developers are building LLMs has been evolving — from the rise of open-source model adoption to a shift towards more complex, AI agents.
Ready to start shipping reliable GenAI apps faster?
Get started with LangChain, LangSmith, and LangGraph to enhance your LLM app development, from prototype to production.