Langchain documentation Learn how to use langchain, a library for building language applications with LLMs and tools. Browse the classes, functions, and methods for agents, tools, output parsers, and more. Feb 6, 2025 ยท LangChain is an open-source framework designed to simplify the creation of applications using large language models (LLMs). Learn how to use its modules, chains, agents, memory, and more for various use cases such as question answering, chatbots, and data augmented generation. Learn how to use LangChain's Python and JavaScript libraries, integrations, methods, and tools to create end-to-end applications with LLMs. com LangChain is a library that helps you combine large language models (LLMs) with other sources of computation or knowledge. Learn how to use LangChain's components, integrations, and orchestration framework with tutorials, guides, and API reference. LangChain is a Python library that simplifies every stage of the LLM application lifecycle: development, productionization, and deployment. It provides a standard interface for chains, many integrations with other tools, and end-to-end chains for common applications. Explore tutorials, how-to guides, conceptual introductions, API reference, and more. . See full list on github. LangChain is an open-source framework for building with GenAI using flexible abstractions and AI-first toolkit. Learn how to build and deploy applications powered by large language models (LLMs) using LangChain's open-source libraries and tools.