LangChain
LangChain is an artificial intelligence company based in San Francisco, founded in 2022 by Harrison Chase and Ankush Gola. The company specializes in providing an agent engineering platform and open-source frameworks that enable developers to build, evaluate, deploy, and operate reliable AI agents at scale. With additional offices in New York, Cambridge, Amsterdam, and London, LangChain has grown to a team of 51–200 employees. LangChain offers a comprehensive suite of tools that support the entire AI engineering lifecycle. This includes the LangChain open-source framework for integrating larg
Investing activity
LangChain appears in 1 AI deal tracked by the AI Lounge deals desk. The rounds are mostly Seed, with a median round size of $8M. The most recent is Sazabi (Seed, $8M, Jun 2026).
LangChain most often invests alongside J2 Ventures, Y Combinator, Village Global and Orange Collective, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about LangChain
What AI companies has LangChain invested in?
LangChain's AI investments include Sazabi. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is LangChain based?
LangChain is based in San Francisco, California, United States.
What stage does LangChain invest at?
In the rounds tracked on AI Lounge, LangChain has invested at Seed, with a median round of $8M.
Who does LangChain co-invest with?
LangChain's most frequent co-investors on AI Lounge are J2 Ventures (1 deal), Y Combinator (1 deal), Village Global (1 deal), Orange Collective (1 deal) and OpenAI (1 deal).
How can founders reach LangChain?
Founders on AI Lounge can see LangChain's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add LangChain to their Investor Pipeline to track the conversation.