LangChain
LangChain is an open-source framework for building applications with large language models and AI agents.
LangChain is an open-source development framework designed to simplify the creation of AI agents and LLM-powered applications. It provides modular components, extensive integrations with over 100 LLM providers and tools, and specialized frameworks like LangGraph for building stateful, cyclical agent workflows. The platform enables developers to build context-aware, reasoning applications such as chatbots, question-answering systems, and multi-agent systems, streamlining the development process from prototype to production.
LangChain remains a strong orchestration framework with significant adoption (138K GitHub stars, $260M funding) and the production-grade LangGraph 1.0 release in 2025 strengthened its position for stateful agent development. However, it faces increasing competition from LlamaIndex and other frameworks, preventing it from achieving top-tier status in the evolving AI development ecosystem.
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Visit the official LangChain website