LangChain raises $125 million to expand its agent engineering platform
IVP led the October 2025 round at a $1.25 billion valuation as LangChain expanded LangSmith beyond testing and observability.
LangChain announced a $125 million funding round at a $1.25 billion valuation on 20 October 2025. IVP led the financing, joined by existing investors Sequoia Capital, Benchmark and Amplify Partners and new backers CapitalG and Sapphire Ventures.
ServiceNow Ventures, Workday Ventures, Cisco Investments, Datadog Ventures, Databricks Ventures and Frontline Ventures also participated.
The company used the announcement to introduce an expanded agent engineering platform. LangSmith brought together tracing, evaluation and deployment, alongside an agent builder in private preview.
LangChain also released version 1.0 of its LangChain and LangGraph open-source frameworks. Together, the tools were intended to help developers build agents, control their workflows and use production data to test and improve them.
Use of funds
Expand the LangSmith agent engineering platform