Repository:langchain-ai/langchain
LangChain: Open-Source Agent Engineering Platform and LLM Framework
LangChain is an open-source framework designed for building agents and LLM-powered applications in Python and JavaScript/TypeScript. It provides modular building blocks, third-party integrations, and specialized tools like LangGraph and Deep Agents.
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From Video: AI Weekly Updates: Open-Source Model Surge, Agent Harnesses, and Meta's AI Reality Check