LangChain raises $300 million at a $3 billion valuation in round led by CapitalG

Nov 12, 2026
The valuation more than doubles the $1.25 billion LangChain was valued at in 2025, as it pitches its agent-development platform to large companies, the Wall Street Journal reports.

LangChain has raised $300 million at a $3 billion valuation in a round led by Alphabet's growth fund CapitalG, the Wall Street Journal reported on Thursday, according to Techmeme's summary of the article.

The valuation is more than double the $1.25 billion LangChain was valued at in 2025. The company, best known for its open-source framework for building applications on large language models, now sells an agent-development platform and is using the new money to go after large enterprises that want to build and deploy their own AI agents.

LangChain has not yet published its own announcement, and other investors and the company's revenue were not available in the summary. We will add details when LangChain or other outlets confirm them.

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