LangChain has raised $125 million at a valuation of $1.25 billion, the company announced Monday. TechCrunch reported in July that the provider of a popular open source framework for creating AI agents was raising new funding worth at least $1 billion. The deal was led by IVP, as we previously reported. New investors CapitalG and Sapphire Ventures have joined, as have existing investors Sequoia, Benchmark and Amplify.
LangChain began in 2022 as an open source project founded by machine learning engineer Harrison Chase. The startup was an early darling of the AI era, solving problems that made it difficult to build applications with early-stage LLMs, such as searching the web, calling APIs, and interacting with databases. It became a successful project and Chase launched a startup with a $10 million seed round from Benchmark in April 2023. A week later, Chase raised a $25 million Series A led by Sequoia, valuing LangChain at $200 million.
As cutting-edge modelers added more infrastructure, LangChain evolved into a platform for construction agents. In addition to announcing its unicorn status, the company launched updates to all of its major products, including its agent generator LangChain, its orchestration and context/memory tool LangGraph, and its testing/observability tool LangSmith. LangChain remains extremely popular among open source developers, with 118,000 stars and 19.4 forks on GitHub.
