CHESS BENCHMARK · STANDARD

Claude Opus 5.5 vs Stockfish Skill 4

Standard. Claude Opus 5.5 played White against Stockfish Skill 4 (1,793). Result 1/2-1/2, threefold repetition, after 105 plies. All of Claude Opus 5.5's games.

RESULT1/2-1/2

ENDED BYthreefold repetition

MODEL TIME13.4 min

COST$1.67 (API-equivalent)

TOKENS IN / OUT62,508 / 58,595

REQUESTS58

[Event "Model Cadence Bench"] [Site "https://modelcadence.com/bench/chess"] [Date "????.??.??"] [Round "?"] [White "Claude Opus 5.5"] [Black "Stockfish Skill 4"] [Result "1/2-1/2"] 1. e4 e5 2. Nf3 Qe7 3. Nc3 d5 4. exd5 Nd7 5. Bb5 h6 6. O-O e4 7. Nxe4 a6 8. Re1 f5 9. Nd6+ cxd6 10. Rxe7+ Nxe7 11. Bxd7+ Bxd7 12. Qe2 Rh7 13. Nd4 g6 14. d3 O-O-O 15. Bf4 Re8 16. Qf3 Rf7 17. Re1 g5 18. Qh5 Rf6 19. Bd2 f4 20. c4 g4 21. Qh4 Bg7 22. Bxf4 Rxf4 23. Ne6 Nf5 24. Qh5 Re7 25. g3 Be8 26. Qxe8+ Rxe8 27. gxf4 Nh4 28. Re4 Bxb2 29. Re2 Bh8 30. Re3 Bf6 31. Kh1 Kd7 32. Rg3 Ke7 33. Rxg4 Kf7 34. Ng5+ hxg5 35. fxg5 Re1+ 36. Rg1 Ra1 37. gxf6 Rxa2 38. Rg4 Ra1+ 39. Rg1 Rxg1+ 40. Kxg1 Ng6 41. Kg2 Nh4+ 42. Kg3 Ng6 43. h4 b5 44. h5 Ne5 45. h6 Kxf6 46. Kf4 Nxd3+ 47. Ke3 Nc5 48. cxb5 axb5 49. Kd4 Na4 50. Kd3 Nb6 51. Kd4 Na4 52. Kd3 Kg6 53. Kd4 1/2-1/2