Kodstigen
← All courses

TypeScript

LangChain.js: Building LLM Applications with TypeScript

Build real, typed LLM applications with LangChain.js: chat models and prompt templates, LCEL chains with .pipe(), retrieval-augmented generation, tools and agents, and stateful multi-step workflows with LangGraph.js.

6 lessons

Start the first lesson

Curriculum

  1. 1Why LangChain.js? Chat Models and Prompt Templates📝 quiz
  2. 2Chains with LCEL: Composing Runnables in TypeScript📝 quiz
  3. 3Retrieval-Augmented Generation with LangChain.js📝 quiz
  4. 4Tools and Agents in LangChain.js📝 quiz
  5. 5LangGraph.js: Stateful, Multi-Step Workflows📝 quiz
  6. 6Final Project: Build a Typed RAG Assistant with LangChain.js and LangGraph.js

Every lesson is open, take them in order or jump straight to what you need.