LangChain
An open-source orchestration framework for building applications with large language models (LLMs).
LangChain is an open-source orchestration framework that simplifies building LLM-powered applications by providing tools and components to connect LLMs with various data sources, enabling complex, multi-step workflows. It offers modular components for agents, memory, prompt templates, and extensive integrations, facilitating the creation of sophisticated AI applications like chatbots and question-answering systems.
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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