LangChain raises $300 million at $3 billion valuation

Artificial intelligence agent startup LangChain Inc. has raised $300 million in a new funding round led by Alphabet Inc.'s CapitalG, valuing the San Francisco-based company at $3 billion. Supported by investors including IVP, Sapphire Ventures, GIC, and DFJ Growth, the deal more than doubles LangChain's valuation from October 2025. The funding will support hiring plans to expand its headcount to 850 employees by late 2027 while advancing its open-source framework and enterprise LangSmith platform.

Open-source tools and features

• ▪LangChain Inc.'s open-source portfolio includes its primary framework released in 2022, LangGraph for multi-agent workflows, and Deep Agents for complex data and planning tasks
• ▪LangChain Inc.'s open-source tool LangGraph enables developers to link multiple AI agents into automated workflows
• ▪LangChain Inc. disclosed after its previous funding round that its open-source tools were downloaded approximately 90 million times per month

Commercial product LangSmith

• ▪LangChain Inc.'s commercial software suite LangSmith is used by technology companies including Autodesk Inc. and Cisco Systems Inc.
• ▪LangChain Inc. generates commercial revenue through LangSmith, a paid product suite that offers agent building and maintenance tools and workflow observability for AI agents