LangChain: Observe, Evaluate, and Deploy Reliable AI Agents

LangChain is an open-source framework for developing applications powered by large language models enabling developers to build complex chains of operations connecting LLMs with external data sources and computation. It provides components for prompt management memory chains agents and document loaders that simplify building LLM-powered applications. LangChain supports integration with dozens of LLM providers and vector databases making it the standard framework for production RAG systems and AI agents. Developers can create chains combining multiple LLM calls retrieve relevant context from proprietary data and build autonomous agents that execute multi-step tasks.