CHESS BENCHMARK · STANDARD

Claude Opus 5.5 vs Stockfish 1320

Standard. Claude Opus 5.5 played White against Stockfish 1320 (1,320). Result 1-0, adjudicated: decisive advantage, after 119 plies. All of Claude Opus 5.5's games.

RESULT1-0

ENDED BYadjudicated: decisive advantage

MODEL TIME10.3 min

COST$1.36 (API-equivalent)

TOKENS IN / OUT68,163 / 40,850

REQUESTS62

[Event "Model Cadence Bench"] [Site "https://modelcadence.com/bench/chess"] [Date "????.??.??"] [Round "?"] [White "Claude Opus 5.5"] [Black "Stockfish 1320"] [Result "1-0"] 1. e4 e6 2. d4 c6 3. Nf3 h6 4. Bd3 d5 5. Nbd2 Bd6 6. O-O Bc7 7. e5 b6 8. c4 a5 9. Qc2 Ne7 10. Re1 Bb7 11. cxd5 Qxd5 12. Be4 Qd7 13. Nc4 Na6 14. Bd2 Nd5 15. a3 a4 16. Rac1 b5 17. Ne3 Nxe3 18. Bxe3 Bb6 19. Bxc6 Bxc6 20. Qxc6 Qxc6 21. Rxc6 Ba5 22. Rec1 Ke7 23. Bd2 Bxd2 24. Nxd2 Rhd8 25. Nf3 Ra7 26. Rb6 Nc7 27. Rc5 Rd7 28. Kf1 Rd5 29. Rbxb5 g5 30. Rxd5 Kf8 31. Rdc5 Nxb5 32. Rxb5 f5 33. Rb6 Kf7 34. Ke2 g4 35. Nd2 Re7 36. Rb4 Rc7 37. Rxa4 f4 38. Ra7 f3+ 39. gxf3 gxf3+ 40. Nxf3 Rxa7 41. Ke3 Ra8 42. Kd3 Kg6 43. Kc4 Rc8+ 44. Kb5 Rb8+ 45. Ka4 Rxb2 46. h4 Kf5 47. Ne1 Rxf2 48. Nd3 Rd2 49. Nc5 Rxd4+ 50. Kb5 h5 51. a4 Rd2 52. a5 Rh2 53. a6 Rb2+ 54. Kc6 Rb8 55. Kc7 Rb1 56. a7 Rb5 57. a8=Q Kxe5 58. Nd3+ Kf6 59. Qf8+ Kg6 60. Nf4+ 1-0