LangChain: From Agent 0-to-1 to Agentic Engineering

https://sequoiacap.com/article/langchain-from-agent-0-to-1-to-agentic-engineering/
  • Only OpenAI outranks LangChain in AI project download volume.
    • 90M monthly PyPI downloads; 35% of Fortune 500 already using it.
    • 2,000+ contributors and 50,000+ LLM apps by Series A (early 2023).
  • LangGraph in production at Uber, Klarna, LinkedIn, J.P. Morgan.
    • 12M monthly downloads; agent orchestration runtime, not just glue code.
  • LangSmith observability traffic growing 12x year-over-year.
  • $125M Series B drops alongside LangChain 1.0 — complete rewrite.
    • Opinionated, LangGraph-powered, pre-built architectures for agent patterns.
    • Harrison Chase started it nights-and-weekends in 2022.
  • Platform play: one-click deployment + no-code text-to-agent builder.
    • First 1P agent: Insights Agent shipping inside LangSmith.

Sonya Huang (Sequoia), on Harrison Chase (LangChain founder/CEO) · 2025-10-21 · Read on sequoiacap.com

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Added Oct 21, 2025
Modified Apr 15, 2026
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