AI developer tools companies · langchain.com
LangChain valuation, funding and revenue
LangChain makes the open source agent frameworks LangChain and LangGraph and sells LangSmith, a commercial platform for tracing, evaluating and deploying AI agents.
Figures checked September 2026. Each one links to its source.
Total funding
$125M+
Latest round only; no public total found.
Revenue
est. $10M to $50M
Night Watcher model from website traffic, a year. Not a reported figure.
Website visits
3.0M
Estimated, August 2026. -13% on the month before.
What is LangChain's valuation?
LangChain was valued at $1.25B in October 2025, the company said (langchain.com). A private company's valuation is set when it raises money, so it can be well out of date between rounds.
How much funding has LangChain raised?
No public source states LangChain's total funding. The rounds below are the ones we could confirm; there may be others. The latest round was a $125M Series B in October 2025, led by IVP.
| Date | Round | Amount | Led by | Valuation | Source |
|---|---|---|---|---|---|
| October 2025 | Series B | $125M | IVP | $1.25B | langchain.com |
| April 2023 | Seed | $10M | Benchmark | – | fortune.com (reported) |
What is LangChain's revenue?
LangChain has not published revenue or ARR, and we found no reliable press report of it. Night Watcher's traffic-based model puts its run rate at an estimated $10M to $50M a year. The model assumes self-serve sign-ups from website visits, so it can badly understate a company that sells through a sales team. Treat it as a rough scale, not a revenue figure.
ARR (annual recurring revenue) is the yearly value of current subscriptions; annualized revenue scales a recent month or quarter up to a year. Neither is audited revenue. See what ARR is.
LangChain website traffic
Estimated monthly visits to langchain.com across all channels, rounded. -4% over three months to August 2026.
- May 20263.1M
- June 20263.4M
- July 20263.4M
- August 20263.0M
LangChain competitors
AI companies in the same category (AI developer tools companies) with a similar amount of website traffic. Similar size and category do not mean identical products; check what each one sells.
Alibaba Cloud
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Kiro
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v0 by Vercel
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Qoder
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RunPod
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About LangChain
- LangChain makes the open source agent frameworks LangChain and LangGraph and sells LangSmith, a commercial platform for tracing, evaluating and deploying AI agents. langchain.com
- Headquarters: San Francisco, California. fortune.com
- Founders: Harrison Chase, Ankush Gola. fortune.com
- LangChain announced the $125 million round at a $1.25 billion valuation itself (20 October 2025), led by IVP with Sequoia, Benchmark, Amplify, CapitalG and Sapphire Ventures. The company post does not call it a Series B or say whether the valuation is pre- or post-money; Fortune and TechCrunch describe it as a Series B. langchain.com
- Revenue: in July 2025 TechCrunch reported, citing four sources, that LangSmith had taken LangChain to between $12 million and $16 million in ARR. A LangChain spokesperson later told Fortune that range was 'low for where we are today' but gave no figure. Because only a range was reported and the company called it out of date, no revenue figure is recorded. Sites such as GetLatka and ARR Club show $16M ARR; those are not allowed sources. fortune.com
- Series A: TechCrunch says a $25 million Series A led by Sequoia came a week after the April 2023 seed and reportedly valued LangChain at $200 million (citing Business Insider); Fortune says the Series A was announced in 2024. Because the date conflicts, the Series A is not listed as a round. techcrunch.com
- Unconfirmed: the secondary marketplace Forge Global lists a 'Series C' valuation of $3.01 billion dated September 2026 (page updated 25 September 2026). No company announcement or allowed news report of a Series C or of that valuation was found, so it is not recorded. Total funding (about $260 million on Sacra-type sites) was also not confirmed in an allowed source. forgeglobal.com
- LangChain began in late 2022 as an open source project by Harrison Chase before becoming a company; no founding year for the company is recorded. fortune.com
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Sources
Checked on 30 September 2026. Traffic figures are third-party estimates, not company-reported numbers.