LangChain announced on November 13, 2026 that it raised $300 million in a Series C round at a $3 billion valuation. Existing investor CapitalG led the financing. The capital backs LangChain’s work on LangSmith, a platform for operating, improving and governing agents regardless of the framework used to build them. Its stated mission centers on letting enterprises choose their models, control data and infrastructure, improve agents continuously and apply governance for secure operation at scale…
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LangChain Secures $300M Series C at $3B Valuation for Agent Governance