LangChain: Chains, Prompt Templates and Output Parsers

LangChain and LlamaIndex Intermediate 3 min read Published
In this lesson

LangChain is the most widely used framework for building LLM apps in Python and JavaScript. It gives you building blocks (prompts, models, parsers, retrievers, tools) that snap together. Knowing it helps with job interviews and with reading other people’s AI code, even if you sometimes choose plain SDK calls instead.

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