# LangChain

> Open-source agent development frameworks plus LangSmith, a commercial platform for running, evaluating, improving and governing AI agents.

## Why it is interesting

LangChain announced a $300M Series C on November 13, 2026 at a stated $3B valuation, led by CapitalG. The enterprise opportunity is not selling foundation-model tokens but building the neutral development, testing, runtime and governance layer across model providers. The company reports more than 7,000 LangSmith organizations; that is a company disclosure, not 7,000 verified paying enterprise contracts.

## Profile

- **Latest funding:** Series C — $300M (November 13, 2026)
- **Latest known valuation:** $3B (basis not stated) (November 13, 2026)
- **Total disclosed equity funding:** $425M
- **Stage:** growth
- **Status:** private
- **Industries:** N/A
- **Coverage:** full
- **Last updated:** 2026-11-13T20:30:00.000Z
- **Latest funding investors:** CapitalG, GIC, DFJ Growth, IVP, Sapphire Ventures, Salesforce Ventures, Insight Venture Partners, QuantumLight, MongoDB Ventures, Sequoia, Amplify, Benchmark

## Key facts

- $300M Series C announced November 13, 2026 at stated $3B valuation, led by CapitalG; post-/pre-money basis unspecified.
- Company says cumulative financing has reached $460M; identifiable October 2025 $125M Series B and November 2026 $300M Series C are separate, not additive to the cumulative total.
- LangSmith public pricing includes Developer $0/seat and Plus $39/seat/month plus usage; Enterprise quoted.
- CapitalG cites more than 350M monthly open-source package downloads and the issuer reports 7,000+ LangSmith organizations; neither is verified revenue.

## Funding history

- Series C · $300M · November 13, 2026
  Source: https://www.langchain.com/blog/series-c
- Series B · $125M · October 20, 2025
  Source: https://www.langchain.com/blog/series-b

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** November 13, 2026

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.

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Source: https://venturecapitaltracker.com/startup/langchain