Level 1

Foundations

What an LLM actually is

Start at zero. Learn what a large language model really does under the hood — tokens, embeddings, transformers, training — without the math soup.

~4 hours5 chapters20 quiz questions

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Chapters

Strip away the magic. An LLM is a probability machine for the next token.

Models don't see words. They see numbers. Here's how text becomes math.

Attention is all you need — but what does that actually mean?

How an LLM is born, taught manners, and learns to follow instructions.

GPT, Claude, Llama, Gemini, DeepSeek, Mistral, Qwen — who's who in 2026.