Round details

LangChain, the platform for building and managing AI agents, has raised $300 million. CapitalG led the round, with IVP, Sapphire Ventures, GIC and DFJ Growth also participating. The 2023-founded company is now valued at $3 billion.

Where the money goes

LangChain plans to use the funds to add staff and expand its infrastructure, growing its engineering, sales and marketing teams.

Open source tools and a paid tier

The company was founded by Harrison Chase and Ankush Gola. Its LangChain framework, built in 2022, lets AI agents connect to large language models and integrate with different tools. LangGraph lets multiple agents carry out complex tasks together, while Deep Agents helps agents plan work, store data and spawn sub-agents.

Revenue model

Alongside its open source tools, LangChain offers LangSmith, a paid platform that lets developers test agents, track their performance and manage them after launch, including spotting and fixing errors in their workflows.