A chapter-by-chapter walkthrough of langchain, generated from its source code and tutorial markdown.
langchain is organized as connected concepts and components. Start broad, then drill down chapter by chapter.
LangChain is a framework for building applications powered by Language Models (LLMs and Chat Models). It provides a structure where Runnables & Chains orchestrate sequences of calls, Agents use models to decide on actions using Tools, and Memory persists conversational state. The framework also abstracts Retrieval for accessing external data and uses Callbacks for monitoring execution.
Source Repository: https://github.com/langchain-ai/langchain
Follow sequentially or jump to any topic. Start with Language Models (Chat Models & LLMs).
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