# LangChain

Company record · Presspool · https://presspool.ai/companies/langchain-com

LangChain builds a platform for agent engineering, spanning its open-source agent frameworks and the LangSmith platform for testing and improving agents with production data. Website: https://langchain.com

## Funding

Latest announced financing: $125M, Series B, led by IVP, announced October 20, 2025.

## Whether AI names LangChain

- On the AI infrastructure map: named or cited in 7 of 39 answers to Presspool's AI infrastructure questions on September 27, 2026 (ChatGPT 1 of 8, Gemini 2 of 8, Copilot 1 of 8, Google AI Mode 1 of 8, Google AI Overviews 2 of 7). [See the map](https://presspool.ai/niches/ai-infrastructure). Most often named in the same answers: [Braintrust](https://presspool.ai/companies/braintrust-dev) (6), [Baseten](https://presspool.ai/companies/baseten-co) (1), [Crusoe](https://presspool.ai/companies/crusoe-ai) (1), [Firecrawl](https://presspool.ai/companies/firecrawl-dev) (1), [Fireworks AI](https://presspool.ai/companies/fireworks-ai) (1).
- Machine Relations Index: Cited in 19 of 16,925 Index answers, May 10, 2026 to September 26, 2026.

A company counts when an AI answer names it or cites its website. Answers vary from run to run, so each count is a dated sample.

## Sources

- [Own site](https://www.langchain.com/blog/series-b)
- [Independent source](https://fortune.com/2025/10/20/exclusive-early-ai-darling-langchain-is-now-a-unicorn-with-a-fresh-125-million-in-funding/)

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