LangChain

LangChain is a language model application development library that develops a language model framework to power applications that integrate with other sources of data and interact with their environment. Its platform also offers support for various model types, prompt management, memory, indexing, chains, and agents to help developers create generative artificial intelligence like personal assistants, question-answering bots, chatbots, and data querying.

AI coding and devtoolsAI agentsFoundation models and research

LangChain raised $125M in a Series B+ round announced October 20, 2025, according to blog.langchain.com. Across 2 sourced rounds it has raised $150M in total. Investors in that round: IVP.

Raise history

1. September 29, 2026
   First seen by Recent Funding
   via startups.gallery
2. October 20, 2025
   Series B+ · $125M
   IIVP (lead)
   Source: blog.langchain.com (startups.gallery listing)
3. February 15, 2024
   Series A · $25M
   SSequoia (lead)
   Source: ainave.com (startups.gallery listing)

Investors

• AAmplify Partners
• BBenchmark
• IIVP
• SSequoia

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Every amount links to the page it came from. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/langchain.