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Companies / langchain-ai

langchain-aiWhat its open source is doing now

Agent harness built with LangChain and LangGraph. Equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - well-equipped to handle complex agentic tasks.

Website
docs.langchain.com/deepagents
Repository
langchain-ai/deepagents
First commit
Stars today
28,756
Forks
4,037

The round

Series B announced 9 Apr 2026

$125M
IVP
Source: company announcement, langchain.com

The repository was 8 months old on the day the round was announced.

Measured by us

GitHub stars, 11 Mar 2026 – 31 Aug 2026

137 observations · every few days

12,83017,36021,89026,420 28,756 AprMayJunJulAug
Stars, observed directly by us

Where it is now

Running slower than its own average

Over the 30 days to 31 Aug 2026 the repository added 1,579 stars. Across the 173 days we have recorded it averages 106 a day, so the last month is running at 0.5× that.

28,756
stars on 31 Aug 2026
52.6/day
last 30 days
55.7/day
last 98 days

What this does not show

  • Stars measure attention, not revenue, adoption or retention.
  • The series starts on 11 Mar 2026, when we began observing this repository. Anything earlier survives only as a monthly reconstruction that does not join up with these readings, so it is not plotted.
  • The Series B above was announced on 9 Apr 2026, outside the window we measured, so this page makes no before-and-after claim about it.

We were tracking langchain-ai/deepagents 29 days before this round was announced.

Finding companies at that stage is the product. Contributor pedigree, enterprise-demand signals and our ranking sit behind the login.

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