CHESS BENCHMARK · STANDARD

Claude Opus 5.5 vs Stockfish 1700

Standard. Claude Opus 5.5 played Black against Stockfish 1700 (1,700). Result 1-0, adjudicated: decisive advantage, after 126 plies. All of Claude Opus 5.5's games.

RESULT1-0

ENDED BYadjudicated: decisive advantage

MODEL TIME11.9 min

COST$1.48 (API-equivalent)

TOKENS IN / OUT76,149 / 43,416

REQUESTS67

[Event "Model Cadence Bench"] [Site "https://modelcadence.com/bench/chess"] [Date "????.??.??"] [Round "?"] [White "Stockfish 1700"] [Black "Claude Opus 5.5"] [Result "1-0"] 1. c3 e5 2. d4 exd4 3. cxd4 d5 4. Bf4 Nf6 5. Nc3 Bd6 6. Bxd6 Qxd6 7. Rc1 c6 8. e3 O-O 9. Bd3 Bg4 10. Qb3 b6 11. h3 Be6 12. Nge2 Nbd7 13. Qc2 Rac8 14. Nf4 Rfe8 15. Nxe6 Rxe6 16. Ne2 c5 17. Ba6 Rc7 18. b3 Ne4 19. Bb5 Ndf6 20. Bd3 h6 21. Qb2 cxd4 22. Rxc7 Qxc7 23. Qxd4 Qc5 24. Qxc5 Nxc5 25. Bc2 Rc6 26. f3 Kf8 27. Rf1 Ke7 28. b4 Ne6 29. Bb3 Kd6 30. Kd2 Ng5 31. Nd4 Rc8 32. Nb5+ Ke7 33. h4 Ne6 34. Nxa7 Rc7 35. Nb5 Rd7 36. Kc2 d4 37. Bxe6 Kxe6 38. exd4 Nd5 39. Kb3 Nf4 40. g3 Nd5 41. Rc1 Kf5 42. Re1 Kf6 43. Re4 g5 44. h5 Rd8 45. a4 Rd7 46. Nc3 Ne7 47. Kc4 Nf5 48. Nd5+ Kg7 49. Nxb6 Rb7 50. Kb5 Nxg3 51. Re5 Nxh5 52. d5 Kf6 53. Re1 Nf4 54. d6 Ne6 55. Ka6 Rb8 56. Nd7+ Kf5 57. Nxb8 Kf6 58. Kb6 Nd8 59. Rd1 Ke6 60. Kb5 Nb7 61. d7 Nd8 62. Kb6 Ke7 63. Nc6+ Nxc6 1-0