Jev vs the LLMs

Same piece sequence, same options, same clock. Pieces keep falling while each model thinks, and gravity gets stronger as the minutes pass; a piece that lands before its answer arrives locks where it is. Every line you clear lands on your opponent's board as a garbage row. Whoever tops out first loses. Play against Jev yourself · Single-player demo: Jev on its own

Jev jev-latest · TypeSafe

Waiting to start.

Real-time Tetris

Keys

TypeSafe key Opponent Anthropic key Remember keys in this browser

Keys go from this page to the proxy in server.mjs, which forwards each to its API and stores nothing.

Rules

Starting gravity Speed-up Seed Time limit (min) Versus: cleared lines attack the opponent Wait for answers (no gravity)

0:00

Level 1 · 150 ms per row

Claude Haiku 4.5 claude-haiku-4-5 · Anthropic

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