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By launching LangChain in late 2022 at the precise moment developers needed it, Chase built the open-source framework that now serves as foundational infrastructure for LLM application development, accumulating 80,000 GitHub stars and adoption across Fortune 500 engineering teams worldwide.
Harrison Chase is the Co-Founder and CEO of LangChain, the framework and platform for building applications powered by large language models.
Chase created LangChain in late 2022 and grew it into one of the most widely adopted toolchains in AI, providing the connective tissue between LLMs and real-world applications such as chatbots, document analysis tools, and autonomous agents. LangChain has raised approximately $260 million in total funding, including a $125 million Series B in 2025 that valued the company at $1.25 billion, and operates LangSmith, its agent engineering and observability platform used by thousands of companies including Fortune 500 engineering teams.
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