Key facts
- LangChain said the $300 million Series C was led by CapitalG, with GIC, DFJ Growth, IVP and Sapphire Ventures participating.
- The company said its valuation rose from $1.25 billion about a year earlier to $3 billion in the new round.
- LangChain says its LangSmith agent creation and management software has 7,000 customers, including NVIDIA, Toyota and Salesforce.
- LangChain says LangSmith does not lock users into a particular model, cloud or ecosystem, unlike major clouds and frontier AI labs.
LangChain, a startup that manages AI agents, announced on November 13, 2026 a $300 million Series C at a $3 billion valuation, led by CapitalG with participation from Singapore's GIC, DFJ Growth, IVP and Sapphire Ventures.
The new valuation is more than double the $1.25 billion the company carried when it raised $125 million about a year earlier in a round led by IVP.
LangChain began in 2022 as an open-source project that handled tasks early-stage LLMs found difficult, such as searching the web, calling APIs and interacting with databases. As frontier AI labs built tools that do those tasks competently, the company shifted its focus to managing AI agents.
LangChain says its agent creation and management software, LangSmith, does not lock users into a particular model, cloud or ecosystem, unlike major clouds and frontier AI labs, and that it contains agent behavior and is easy to use. The company claims 7,000 LangSmith customers, including startups Harvey, Rippling and Clay and enterprises NVIDIA, Toyota and Salesforce.