About LangChain

LangChain was founded in early 2023 to help developers build context-aware reasoning applications. Our popular open source framework gives developers the building blocks to create production-ready applications with LLMs. LangSmith complements LangChain as an all-in-one SaaS platform that enables a full, end-to-end, development workflow for building and monitoring LLM-powered apps.

We’re a small team making an outsized impact (~5M monthly downloads, ~30k applications powered, and a remarkable set of first customers). Backed by some of the best venture capitalists, we have big ambitions and are set up to build an enduring business. Join us.

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