LangChain is an open-source framework designed to simplify building applications with large language models (LLMs). It provides modular components for chaining calls, managing memory, integrating external data via retrieval-augmented generation (RAG), and orchestrating AI agents. Key features include:
- Agents: Let LLMs decide which tools to use.
- Memory: Retain context across conversations.
- Retrieval: Connect LLMs to custom data sources.
Developers use LangChain to create chatbots, document analysis tools, and automated workflows. Its modular design makes it beginner-friendly while supporting advanced use cases.