2 hrs
This hands-on LangChain crash course from freeCodeCamp teaches you how to build production-ready large language model (LLM) applications from the ground up. LangChain has become the go-to framework for developers worldwide who want to move beyond basic API calls and create intelligent, multi-step AI workflows. In just 2 hours, you'll learn the practical patterns that power real-world AI products.
You're ready for this course if you've written Python code before and want to level up into AI application development. Whether you're starting your first AI project or looking to streamline how you build with LLMs, this crash course gives you the exact tools and patterns you need.
You should be comfortable writing Python code. Basic familiarity with APIs and how HTTP requests work is helpful but not essential. No prior AI or machine learning experience needed.
India's startup ecosystem is racing to build AI products, and LangChain skills are in high demand across cities like Bangalore, Delhi, and Mumbai. Companies from early-stage AI startups to established tech firms—including Indian players in fintech, logistics, and e-commerce—are hiring developers who can actually build with LLMs, not just talk about them. Mastering LangChain positions you for roles offering competitive salaries and equity in India's growing AI economy.
Yes, completely free. freeCodeCamp's entire video library is open to everyone.
The course is 2 hours long. You can finish it in a single sitting or spread it across two evenings—whatever works for your schedule. Plan time after watching to actually code along and build your first app.
This course doesn't come with a formal certificate, but you'll have a working LLM application to show employers and add to your portfolio—often worth more than a badge.