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 over 50k 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.
5M+
Monthly Downloads
50K+
Apps Powered
75K+
GitHub Stars
2K+
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.
Announcing the General Availability of LangSmith
Today, we’re thrilled to announce the general availability of LangSmith — our solution for LLM application development, monitoring, and testing.
LangChain v0.1.0
Today we’re excited to announce the release of langchain 0.1.0, our first stable version. It is fully backwards compatible, comes in both Python and JavaScript, and offers improved focus through both functionality and documentation.
LangChain State of AI 2023
In 2023 we saw an explosion of interest in Generative AI upon the heels of ChatGPT. All companies - from startups to enterprises - were (and still are) trying to figure out their GenAI strategy.
Ready to start shipping reliable GenAI apps faster?
LangChain and LangSmith are critical parts of the reference architecture to get you from prototype to production.