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LangChain

LangChain, founded in 2022, has raised approximately $160 million across Seed, Series A, and Series B rounds, including a $125 million Series B that gave it a $1.25 billion valuation. Headquartered in San Francisco, California, United States, the company offers an agent engineering platform with tools for LLM workflows, orchestration, and monitoring. Key investors include IVP, Sequoia Capital, and Benchmark Capital. Since inception, LangChain has rapidly scaled its platform to support enterprise adoption and production-grade AI agents, positioning it as a leading infrastructure provider in the AI agent ecosystem.