Jev plays Tetris via API so fast it pushes blocks down itself, prompt tweaks change its style

TheMoonMidas · x · 2026-09-17

Marcus Lowe got early access to TypeSafe's new Jev model and built a Tetris demo: board state and legal moves go in, moves come out via API — fast enough to push blocks down itself, and changing the prompt changes how it plays. He shared a playable demo. Elsewhere, @jpschroeder built a driving demo in under an hour with astra simulating the world and Jev making driving decisions. The demos showcase Jev's ultra-low-latency structured decisions.

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