Intro to Large Language Models

About this course

In just one hour, Andrej Karpathy—one of the world's leading AI researchers—breaks down how Large Language Models (LLMs) actually work. This is the clearest, most accessible explanation of LLMs available anywhere online, perfect for anyone who's curious about the AI tools reshaping every industry but doesn't know where to start.

What you'll learn

• How LLMs are trained and why they can understand and generate human language
• The difference between training, fine-tuning, and inference—and why each matters
• How tokens work and why they affect what an AI model can and cannot do
• The actual mechanics behind popular models like ChatGPT and Gemini
• Common misconceptions about AI and what LLMs can—and cannot—actually do
• How to think critically about AI capabilities and limitations in real-world applications

Who this is for

You're ideal for this course if you use or work with AI tools daily, or if you're just starting to explore them. Whether you're in tech, business, education, or any other field, understanding how LLMs work will sharpen your judgment and help you use these tools better.

• Students — Build a genuine understanding of AI fundamentals before stepping into placements or campus interviews where AI questions are now standard.
• Career-switchers — Get the conceptual foundation needed to pivot into AI-adjacent roles, whether in product management, content, or business strategy.
• Professionals and entrepreneurs — Learn enough to evaluate AI tools for your work, spot hype from reality, and make smarter decisions about where AI adds real value.

Prerequisites

None—this course is beginner-friendly. You don't need a math degree or coding experience. If you're curious and can follow along with an explanation, you're ready.

Why this matters for Indian learners

AI skills are becoming table stakes in India's job market. Major Indian tech companies—TCS, Infosys, HCL, and startups across fintech, edtech, and e-commerce—are aggressively hiring for AI roles. Roles like AI prompt engineer, ML engineer, and AI product manager now command significant salaries in India, especially in metros. But you can't land these roles or use AI effectively in your current job without understanding the fundamentals.

This course gives you that foundation in 60 minutes. Whether you're preparing for a transition into AI roles or simply want to stay relevant as your industry adopts these tools, Karpathy's explanation is the gold standard.

Frequently asked questions

Is this course really free?

Yes, completely free. It's a YouTube talk—no payments, no hidden paywalls, no premium upgrades.

How long will it take to complete?

The talk itself is about 1 hour. We suggest watching it in one sitting if you can, or breaking it into two 30-minute sessions. Either way, plan for a quiet space where you can focus.

Will I get a certificate?

No formal certificate is offered. But you'll walk away with knowledge that's far more valuable than a certificate—a clear, accurate mental model of how the AI tools you use actually work.