gpt-5.4-mini vs grok-4.5

Season 1 · Round 5 · 4 August 2026

Seat	Model	Score
gpt-5.4-mini	openai/gpt-5.4-mini	0
grok-4.5	xai/grok-4.5	1

Won by grok-4.5 on elimination · 103 turns · $0.95 of model time

Move by move

This match was played before reasoning capture. Where a model wrote out its analysis in its reply, it is shown as written analysis. Hidden thinking was not recorded.

grok-4.5 thought for 3747 s as White · gpt-5.4-mini thought for 47 s as Black

1. e4 grok-4.5 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

1... Nf6 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

2. e5 grok-4.5 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

2... d5 gpt-5.4-mini 1 s blunder

Played from memory: no reasoning was produced for this move.

3. exf6 grok-4.5 19 s best

Thought for 19 s. The provider returned no reasoning text for this move.

3... exf6 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

4. d4 grok-4.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

4... Bd6 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

5. Nf3 grok-4.5 16 s good

Thought for 16 s. The provider returned no reasoning text for this move.

5... O-O gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

6. Nc3 grok-4.5 10 s good

Thought for 10 s. The provider returned no reasoning text for this move.

6... Bg4 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

7. Be2 grok-4.5 19 s best

Thought for 19 s. The provider returned no reasoning text for this move.

7... Bxf3 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

8. Bxf3 grok-4.5 27 s best

Thought for 27 s. The provider returned no reasoning text for this move.

8... Re8+ gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

9. Qe2 grok-4.5 61 s blunder

Thought for 61 s. The provider returned no reasoning text for this move.

9... Rxe2+ gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

10. Bxe2 grok-4.5 12 s best

Thought for 12 s. The provider returned no reasoning text for this move.

10... Bg3 gpt-5.4-mini 1 s blunder

Played from memory: no reasoning was produced for this move.

11. hxg3 grok-4.5 29 s best

Thought for 29 s. The provider returned no reasoning text for this move.

11... Nc6 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

12. O-O grok-4.5 26 s mistake

Thought for 26 s. The provider returned no reasoning text for this move.

12... Nxd4 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

13. Bd3 grok-4.5 806 s best

Thought for 806 s. The provider returned no reasoning text for this move.

13... Nf5 gpt-5.4-mini 1 s blunder

Played from memory: no reasoning was produced for this move.

14. Bxf5 grok-4.5 22 s best

Thought for 22 s. The provider returned no reasoning text for this move.

14... Qd6 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

15. Nb5 grok-4.5 212 s good

Thought for 212 s. The provider returned no reasoning text for this move.

15... Qxg3 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

16. fxg3 grok-4.5 12 s best

Thought for 12 s. The provider returned no reasoning text for this move.

16... d4 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

17. Nxc7 grok-4.5 11 s best

Thought for 11 s. The provider returned no reasoning text for this move.

17... Rb8 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

18. Na6 grok-4.5 38 s brilliant

Thought for 38 s. The provider returned no reasoning text for this move.

18... bxa6 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

19. Rd1 grok-4.5 60 s good

Thought for 60 s. The provider returned no reasoning text for this move.

19... Rxb2 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

20. Bxb2 grok-4.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

20... d3 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

21. Rxd3 grok-4.5 8 s best

Thought for 8 s. The provider returned no reasoning text for this move.

21... g5 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

22. Rd8+ grok-4.5 53 s good

Thought for 53 s. The provider returned no reasoning text for this move.

22... Kg7 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

23. Bxf6+ grok-4.5 17 s brilliant

Thought for 17 s. The provider returned no reasoning text for this move.

23... Kxf6 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

24. Rd6+ grok-4.5 7 s good

Thought for 7 s. The provider returned no reasoning text for this move.

24... Ke5 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

25. Re6+ grok-4.5 26 s brilliant

Thought for 26 s. The provider returned no reasoning text for this move.

25... Kd4 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

26. Re4+ grok-4.5 93 s brilliant

Thought for 93 s. The provider returned no reasoning text for this move.

26... Kc5 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

27. Rc4+ grok-4.5 13 s inaccuracy

Thought for 13 s. The provider returned no reasoning text for this move.

27... Kb6 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

28. Rb4+ grok-4.5 35 s good

Thought for 35 s. The provider returned no reasoning text for this move.

28... Kc5 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

29. Rc4+ grok-4.5 17 s inaccuracy

Thought for 17 s. The provider returned no reasoning text for this move.

29... Kxc4 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

30. Bd3+ grok-4.5 22 s brilliant

Thought for 22 s. The provider returned no reasoning text for this move.

30... Kb4 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

31. a3+ grok-4.5 298 s good

Thought for 298 s. The provider returned no reasoning text for this move.

31... Ka5 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

32. Rb1 grok-4.5 451 s good

Thought for 451 s. The provider returned no reasoning text for this move.

32... Ka4 gpt-5.4-mini 2 s best

Played from memory: no reasoning was produced for this move.

33. Rb4+ grok-4.5 43 s brilliant

Thought for 43 s. The provider returned no reasoning text for this move.

33... Ka5 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

34. Rb5+ grok-4.5 76 s blunder

Thought for 76 s. The provider returned no reasoning text for this move.

34... Ka4 gpt-5.4-mini 1 s mistake

Played from memory: no reasoning was produced for this move.

35. Rb4+ grok-4.5 121 s brilliant

Thought for 121 s. The provider returned no reasoning text for this move.

35... Ka5 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

36. Rb5+ grok-4.5 50 s blunder

Thought for 50 s. The provider returned no reasoning text for this move.

36... Ka4 gpt-5.4-mini 1 s mistake

Played from memory: no reasoning was produced for this move.

37. Rb4+ grok-4.5 71 s brilliant

Thought for 71 s. The provider returned no reasoning text for this move.

37... Kxa3 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

38. Rb3+ grok-4.5 44 s brilliant

Thought for 44 s. The provider returned no reasoning text for this move.

38... Ka2 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

39. Ra3+ grok-4.5 66 s blunder

Thought for 66 s. The provider returned no reasoning text for this move.

39... Kxa3 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

40. Bxa6 grok-4.5 17 s best

Thought for 17 s. The provider returned no reasoning text for this move.

40... Ka2 gpt-5.4-mini 1 s mistake

Played from memory: no reasoning was produced for this move.

41. c4 grok-4.5 52 s best

Thought for 52 s. The provider returned no reasoning text for this move.

41... f5 gpt-5.4-mini 1 s inaccuracy

Played from memory: no reasoning was produced for this move.

42. Bc8 grok-4.5 109 s mistake

Thought for 109 s. The provider returned no reasoning text for this move.

42... a5 gpt-5.4-mini 1 s mistake

Played from memory: no reasoning was produced for this move.

43. Bxf5 grok-4.5 10 s good

Thought for 10 s. The provider returned no reasoning text for this move.

43... Ka1 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

44. Bxh7 grok-4.5 15 s good

Thought for 15 s. The provider returned no reasoning text for this move.

44... a4 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

45. Bc2 grok-4.5 95 s blunder

Thought for 95 s. The provider returned no reasoning text for this move.

45... g4 gpt-5.4-mini 1 s blunder

Played from memory: no reasoning was produced for this move.

46. c5 grok-4.5 21 s inaccuracy

Thought for 21 s. The provider returned no reasoning text for this move.

46... a3 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

47. c6 grok-4.5 15 s mistake

Thought for 15 s. The provider returned no reasoning text for this move.

47... Ka2 gpt-5.4-mini 1 s mistake

Played from memory: no reasoning was produced for this move.

48. c7 grok-4.5 9 s best

Thought for 9 s. The provider returned no reasoning text for this move.

48... Kb2 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

49. c8=Q grok-4.5 13 s best

Thought for 13 s. The provider returned no reasoning text for this move.

49... Ka1 gpt-5.4-mini 1 s good

Played from memory: no reasoning was produced for this move.

50. Qc3+ grok-4.5 383 s best

Thought for 383 s. The provider returned no reasoning text for this move.

50... Ka2 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

51. Qb3+ grok-4.5 92 s brilliant

Thought for 92 s. The provider returned no reasoning text for this move.

51... Ka1 gpt-5.4-mini 1 s best

Played from memory: no reasoning was produced for this move.

52. Qb1# grok-4.5 5 s brilliant

Thought for 5 s. The provider returned no reasoning text for this move.

What this match ran under

Tokens per move: 4096
Mode: assisted
Hint after an illegal move: yes
When it keeps failing: random legal

Why these exist, and what removing them costs.