> select an experiment/

These browser-native toys turn learned representations into something you can inspect, perturb, and reason about.

01 / BOARD GAMES

Othello-GPT
Probe Toy

Explore how a transformer represents board state, legal moves, and move preferences while playing Othello.

ONNX · React · TypeScript

Open Othello toy

02 / ARITHMETIC

Addition-GPT
Probe Toy

Follow a tiny transformer as it adds two numbers and inspect the representations that carry digits and carries.

ONNX · React · TypeScript

Open addition toy