⚡ Blink Duel

An ambiguous stimulus appears. You and Jev — a System One model that returns calibrated judgments in 70–500ms — both answer. Human reaction time is ~200ms.
It has already decided before you finish reading. Probably.

10 rounds. Each round, a stimulus appears and both you and Jev answer. You earn points for being right and fast. Jev doesn't get points — Jev just doesn't miss.

Judgments by Jev (TypeSafe AI) via the Vercel AI SDK. One batched call per round: a verdict + an ambiguity check, answered in parallel. Input-only billing, output free — a full 10-round game costs a fraction of a cent.

Built by Sagnik