CapitalG said on Nov. 13, 2026 that it is leading LangChain's $300 million Series C at a $3 billion valuation, about a year after its Series B investment. LangChain named GIC, DFJ Growth, IVP, Sapphire Ventures, and others as participants. CapitalG did not disclose the size of its own check, and LangChain said it will show new LangSmith features on Nov. 20.
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