LangChain Tutorial: Build LLM Applications Step by Step
LangChain has become the most popular framework for building applications with large language models. It provides the building blocks for connecting LLMs to data, tools, and workflows. Here’s a practical guide to getting started.
What LangChain Is
LangChain is an open-source framework that simplifies building LLM-powered applications. Instead of writing everything from scratch, LangChain provides pre-built









