the lab

Experiments in how models actually work.

Interactive notes from taking model internals apart — the mechanisms behind the magic, rebuilt small enough to hold in your hands and turn over. Less explaining, more poking. Each one runs entirely in your browser.

1. 001interactive

   how sampling works

   temperature, top-k, and top-p on a live token distribution — feel the dice reshape before the roll.

   2026-07open →
2. 002

   more experiments in the notebook margin — attention maps, tokenizers, embeddings…