An ongoing project. New lesson every few months.
Visual, interactive lessons
about how AI actually works.
No hype. No prophecy. No "this changes everything." Just careful, honest explanations of the ideas inside the machines, with diagrams you can poke at, drag, and break.
Interactive lesson preview
Why I am making this.
There is a strange gap right now. Hundreds of millions of people use AI every week, and almost none of them know what is happening when they hit enter. That is not anyone's fault; the field grew up faster than its explanations did.
This site is my attempt to close that gap, one idea at a time. Each lesson starts from zero and builds up slowly, with diagrams you can play with instead of just look at. If you have ever wanted to actually understand what a model is doing, I hope these help.
Written by one person, in their evenings, with a lot of coffee.
The lessons.
One published · eight planned
A real-tokenizer interactive lesson about how AI models read text by breaking words into tokens before turning them into numbers.
Once words are tokens, the model turns each one into a point in space. Suddenly, cat and kitten live next door.
How a model decides which earlier words matter to the next word it writes. The trick that made everything else possible.
Why AI sometimes feels random and sometimes feels stiff. A single dial that changes everything about how it speaks.
Why a model that does not know things still answers confidently, and what that tells us about what it learned.
What the model can and cannot see at any moment, and why long conversations sometimes lose the thread.