Tutorials

New to LangChain or to LLM app development in general? Read this material to quickly get up and running.

Basics

• Build a Simple LLM Application with LCEL
• Build a Chatbot
• Build vector stores and retrievers
• Build an Agent

Working with external knowledge

• Build a Retrieval Augmented Generation (RAG) Application
• Build a Conversational RAG Application
• Build a Question/Answering system over SQL data
• Build a Query Analysis System
• Build a local RAG application
• Build a Question Answering application over a Graph Database
• Build a PDF ingestion and Question/Answering system

Specialized tasks

• Build an Extraction Chain
• Generate synthetic data
• Classify text into labels
• Summarize text

For a longer list of tutorials, see our cookbook section.