LangChain has raised $300 million at a $3 billion valuation, The Wall Street Journal reported on November 12, 2026. CapitalG, Alphabet’s independent growth fund, led the round.
Existing investors IVP and Sapphire Ventures returned. GIC and DFJ Growth joined as new backers.
LangChain funding round at a $3 billion valuation
LangChain will put the money into LangSmith, its paid platform for monitoring, testing and deploying AI agents. It also plans to hire engineers, marketers and salespeople, according to Dealroom’s summary of the Journal’s report.
The Journal’s report gave no revenue figure for LangChain.
| Detail | Figure |
|---|---|
| Amount raised | $300 million |
| Valuation | $3 billion |
| Lead investor | CapitalG |
| Returning investors | IVP, Sapphire Ventures |
| New investors | GIC, DFJ Growth |
| Reported | November 12, 2026 |
| Main use of funds | LangSmith expansion and hiring |
LangChain valuation growth since 2025
The new valuation is 2.4 times the $1.25 billion mark from October 2025. IVP led that $125 million Series B.
The jump took about 13 months. Forge Global lists the new round as a Series C priced on September 21, 2026, at $143.29 per share.
That share price is more than double the $67.54 paid in the Series B.
LangChain funding history from seed to Series C
Benchmark led LangChain’s $10 million seed round in April 2023. Sequoia Capital then led a $25 million Series A, announced in February 2024 alongside the launch of LangSmith.
| Round | Date | Amount | Valuation | Lead investor |
|---|---|---|---|---|
| Seed | April 2023 | $10M | Not disclosed | Benchmark |
| Series A | February 2024 | $25M | Not disclosed | Sequoia Capital |
| Series B | October 2025 | $125M | $1.25B | IVP |
| Series C | November 2026 | $300M | $3B | CapitalG |
Forge Global puts LangChain’s total funding at about $460 million.
What LangChain and LangSmith do
Harrison Chase launched LangChain as an open-source project in October 2022. He co-founded the company with Ankush Gola in San Francisco.
The company maintains three open-source frameworks: LangChain, LangGraph and Deep Agents. Developers use them to build apps and agents on top of large language models.
LangSmith is the paid product. Teams use it to test, deploy, observe and monitor AI agents once they run in production.
Tracxn counted 442 employees at the company as of September 30, 2026.
Why LangChain is spending on agent monitoring
Chase told the Journal that “the agent’s behavior is the hard part to control.” LangSmith records what agents do in production so teams can find and fix errors.
Why CapitalG led the LangChain funding round
CapitalG partner Mo Jomaa told the Journal the agent market is crowded. He said large players try to tie customers to their own models and infrastructure.
LangChain pitches itself as an independent layer that works across model providers. CapitalG had already invested in the October 2025 Series B.
Other agent tooling companies have raised large rounds this year. Daytona raised $60 million at a $1 billion valuation, and Temporal raised $550 million at $12.55 billion, according to Dealroom.
Agent startups also featured in the AI funding roundup for October 26 to November 1, where Hex raised $100 million for data analytics built for people and agents.
LangChain’s $3 billion mark still sits well below the largest names in this ranking of the 50 best-funded AI startups.
FAQ
How much did LangChain raise in November 2026?
LangChain raised $300 million at a $3 billion valuation, The Wall Street Journal reported on November 12, 2026. CapitalG led the round.
Who invested in LangChain’s latest round?
CapitalG led the round. Existing investors IVP and Sapphire Ventures took part, and GIC and DFJ Growth joined as new investors.
What is LangChain’s valuation?
LangChain is valued at $3 billion after its latest round. That is 2.4 times the $1.25 billion valuation set in its October 2025 Series B.
What is LangSmith?
LangSmith is LangChain’s paid platform for testing, deploying, observing and monitoring AI agents. Most of the new funding will go toward expanding it.
How much funding has LangChain raised in total?
LangChain has raised about $460 million, according to Forge Global. That covers a $10 million seed, a $25 million Series A, a $125 million Series B and the $300 million Series C.
