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LangChain

Our goal is to figure out what the agents of the future look like, and then build tools to help make them real.

Harrison Chase, Co-founder and CEO

Harrison Chase, Co-founder and CEO of LangChain speaking at a conference. CapitalG first invested in LangChain in 2025 (Series B).
Harrison Chase, Co-founder and CEO of LangChain.

LangChain provides the agent engineering platform and open source frameworks developers need to ship reliable agents fast.

Open source frameworks, LangGraph and LangChain, help developers build agents with speed and granular control, while LangSmith provides observability, evaluation, and deployment services for rapid iteration.

Trusted by millions of developers worldwide and used by over half of the Fortune 500, LangChain provides an integrated toolset to transform non-deterministic AI systems into dependable production experiences.

langchain.com

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