Claude Opus 5.5 vs Stockfish 1320
Chess960. Claude Opus 5.5 played Black against Stockfish 1320 (1,320). Result 1-0, checkmate, after 39 plies. All of Claude Opus 5.5's games.
RESULT1-0
ENDED BYcheckmate
MODEL TIME4.5 min
COST$0.553 (API-equivalent)
TOKENS IN / OUT20,186 / 19,597
REQUESTS21