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What's the difference?

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All stages · Demo 04

Wikirace beam

Pick the next article from a closed set of real links. The model cannot invent a title that is not there.

ChoiceClosed-set action Choice

A beam of probabilities across dozens of Wikipedia doors. Code walks; Jev only chooses.

replayJevonshop 0

here

William Stanley Jevons

Goal: Kahneman’s dual-process vocabulary — without inventing a page that does not exist.

closed set · up to 255

All 4056 stages

Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.