Claude Opus 5.5 vs Stockfish 1500
Standard. Claude Opus 5.5 played White against Stockfish 1500 (1,500). Result 0-1, checkmate, after 46 plies. All of Claude Opus 5.5's games.
RESULT0-1
ENDED BYcheckmate
MODEL TIME4.2 min
COST$0.497 (API-equivalent)
TOKENS IN / OUT20,423 / 16,679
REQUESTS23