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Play with AI from the inside.

Not theory: five simulations you can touch right now to understand how AI actually works under the hood. They're real pieces of my course. Play with them — and if it sparks your curiosity, keep going.

01

How AI splits your text

Models don't see letters or words: they see tokens. That's why they sometimes miscount letters. Type something and watch.

Tokenizer: see how AI splits your text

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Today·I'm·going·to·build·my·first·app·with·artificial·intelligence.

22

Tokens

11

Words

67

Characters

2.0

Tokens / word

Visual approximation: models don't see letters or words, they see tokens (fragments). That's why they sometimes miscount a word's letters — they literally don't see them.

02

AI predicts, it doesn't know

It doesn't look up the answer: it builds it token by token, choosing by probability. Turn up the temperature and watch it get bolder.

Token-by-token prediction (with temperature)

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The second best time to start is
Temperature0.70 · medium · balanced

Next token — probability by temperature (click to pick):

The model doesn't look up the answer: it builds it by choosing the next token by probability. At temperature 0 it always picks the most likely one; turn it up and it ventures into less obvious options.

03

Why AI 'forgets'

Its memory is a fixed-size desk. When it no longer fits, the oldest thing falls off the edge. Watch it happen here.

The context window: a fixed-size desk

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Capacity: 1/5

Instruction📌 System: ALWAYS use Tailwind for styling

It fits a lot, but not infinitely. If you keep stacking, the first thing you said falls off the edge — that's why the model 'forgets' your initial instruction. The fix: remind it, or open a new chat.

04

A good prompt changes everything

The gap between a mediocre answer and a brilliant one is almost always in how you ask. Build a prompt and watch its quality climb.

Prompt lab: build a good one piece by piece

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Your prompt

Build me a login form component with email and password fields.

Likely quality of the result25%

Generic result

The AI guessed your stack and your design. It probably won't fit and you'll redo it.

A good prompt = Context + Task + Format + Constraints. Turn on the pieces and watch the same model go from handing you garbage to handing you gold.

05

How you ask AI for an image

Generating images with AI is a language: subject, style, light, framing. Build yours piece by piece.

Build an image prompt, ingredient by ingredient

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Generic cliché

A clock, a rocket, or people in suits. It doesn't fit your brand — you toss it.

Your image prompt

an open notebook and a cup of coffee on a light wooden desk.
Active ingredients1/6

A mediocre image is almost never the model's fault: it's a vague prompt. Turn on the 6 ingredients and watch yourself go from a cliché to an on-brand cover.

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