LangChain, which aims to help large companies build and deploy their own AI agents, raised $300M led by CapitalG at a $3B valuation, up from $1.25B in 2025 (Belle Lin/Wall Street Journal)

LangChain raised $300 million led by CapitalG at a $3 billion valuation, up from $1.25 billion in 2025. The startup aims to help large companies build and deploy their own AI agents through its agent-development platform targeting enterprises.