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Jev plays Tetris · jevtypesafeai.com
A live Tetris board where each piece is one Jev Choice over the legal placements, with latency and cost shown as the pieces drop.
- Format
- Playground
- Reading time
- 2 min
- Published by
- Community
- Last verified
- Sep 2026
This is one of several Jev listings for the same project. The canonical entry is Jev plays Tetris · pinebit.
Highlights
- Each drop is one Choice. The page sends the board, the current piece, the next piece, and the legal placements.
- Jev returns a placement id such as p3. The page then drops the piece there.
- The site quotes about 200 ms per piece and a few cents per game.
- A sample decision on the page is P3 in 241 ms.
Watch out
Independent site, not TypeSafe, and not the other Jev Tetris repos. The sample client posts to jevtypesafeai.com/api/v1/decide. Cost and latency lines are the site's claims.
Questions about this entry
Short answers drawn from the linked project or page.
Not all of them. The page says the site enumerates the legal landing spots, shortlists the strongest few, and sends only those as one typed choice. The shown example passes p0 through p5, column times rotation, for a T piece, so local pruning is what keeps the option list small.
Roughly, and the site accepts it. Each placement is a real call that typically returns in 100 to 300 ms, shown as 241 ms for the P3 example, so piece placement is gated on the model rather than on frame timing. It is a demo of per-call latency, not a responsive loop.
The page presents them as calibrated probabilities, showing p3 at 61%, p1 at 22%, and p5 at 17% for its example decision. But no reliability curve, ECE, or held-out set is published behind them, and calibration of multiple-choice output has been independently challenged, so verify before gating real work on them.
An independent site that states in its footer that it is not affiliated with or endorsed by TypeSafe AI. The sample client posts to jevtypesafeai.com/api/v1/decide, so it is their proxy, and it is unrelated to the other Jev Tetris repositories. The cost and latency lines on the page are the site's own claims.
The board, the current piece, the next piece and the legal placements, and Jev returns a placement id like p3 that the page then executes.
Yes. The next piece is part of the state sent each turn, so the Choice is made with limited lookahead rather than on the current piece alone.
The page drops the piece at the placement id Jev returns, such as the P3 example shown at 241 ms, so the executed landing spot is the model's Choice answer.
Reactions & coverage
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