jev·agent
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Live demo

Watch Jev play chess

Every move is a Choice over the legal action space. Code keeps the rules; Jev only picks. Latency and cost show up beside each reply — the same story as the measured pricing page, in a shape you can watch.

You are White. Your move.

Moves

  1. Make a move as White to start.

How it works

chess.js enumerates legal moves from the current FEN. Those moves become Choice criteria (capped at 48 for cost). The server calls Jev through the same OpenRouter / TypeSafe path as the other demos. If confidence is low, a tiny capture/check heuristic breaks the tie — rules and search stay in code.