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LangChain is a known quantity to the major LLMs — they cite you with concrete facts.
Last checked June 10, 2026 · checked 2× total
LangChain is a company that provides an open-source framework for building applications powered by large language models (LLMs). It simplifies the integration of LLMs with external data sources, APIs, and other tools, enabling developers to create complex chains of operations. The company also offers LangSmith for observability and LangGraph for building stateful, multi-actor applications.
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