LangChain has raised a $300 million Series C at a $3 billion valuation, the company announced on November 13. Existing investor CapitalG led the round, with new investors GIC and DFJ Growth and returning investors IVP and Sapphire Ventures.
What happened
LangChain says more than 7,000 organizations use LangSmith, its platform to run, evaluate and govern agents, and names NVIDIA, Toyota and Salesforce among them. The company sorts the product into agent runtime, agent improvement and agent governance. Its LLM and Tool Gateways manage model budgets and fallbacks and govern tool access across teams and agents. LangChain plans to show new LangSmith features at a release event on November 20.
Why it matters
The new valuation is 2.4 times the $1.25 billion LangChain announced with its $125 million round on October 20, 2025, about 13 months earlier. That announcement named customers but gave no customer count. Workday appears in both posts, and LangChain now says Workday runs and governs agents across the organization on LangSmith and has cut the time to deploy a new agent from five months to under a day.
LangChain says its aim is to “enable every company to own its intelligence” and to let customers choose models and keep control of their data and infrastructure. The round is, in our reading, a bet that buyers want agent controls that sit outside any single model vendor. Budget controls for agents are also arriving inside single-vendor platforms, as with Salesforce’s Agent Fabric spend limits and Google’s Gemini Agent spend caps.
Platform teams comparing agent stacks should ask LangChain which gateway and budget features ship today and which arrive on November 20, then price LangSmith against agent tooling already covered by their cloud or model contracts.
Source: LangChain, LangChain Raises $300M to Enable Every Company to Own Its Intelligence. Additional source: LangChain, LangChain raises $125M to build the platform for agent engineering.
