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What's the difference?

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All stages · Demo 18

Span pick

Regex over-finds amounts. Choice options are those spans plus a none hatch. Jev cannot invent a digit.

ChoicePre-parsed value extraction

An invoice glow: highlighted spans compete; code copies the winner unchanged.

replaypick —copied verbatim

closed spans + none

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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.