gpt-5.4-nano vs grok-4.5

Season 1 · Round 4 · 2 August 2026

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

Won by gpt-5.4-nano on elimination · 79 turns · $1.30 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.

gpt-5.4-nano thought for 38 s as White · grok-4.5 thought for 7721 s as Black

1. Nf3 gpt-5.4-nano 1 s good

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

1... Nf6 grok-4.5 2 s good

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

2. Nc3 gpt-5.4-nano 1 s inaccuracy

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

2... e5 grok-4.5 5 s inaccuracy

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

3. Nxe5 gpt-5.4-nano 1 s best

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

3... Nc6 grok-4.5 25 s good

Thought for 25 s. The provider returned no reasoning text for this move.

4. Nxc6 gpt-5.4-nano 1 s best

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

4... dxc6 grok-4.5 20 s best

Thought for 20 s. The provider returned no reasoning text for this move.

5. Ne4 gpt-5.4-nano 1 s blunder

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

5... Nxe4 grok-4.5 13 s best

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

6. d4 gpt-5.4-nano 1 s inaccuracy

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

6... Nxf2 grok-4.5 75 s blunder

Thought for 75 s. The provider returned no reasoning text for this move.

7. Kxf2 gpt-5.4-nano 1 s best

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

7... Qh4+ grok-4.5 228 s good

Thought for 228 s. The provider returned no reasoning text for this move.

8. Kf3 gpt-5.4-nano 1 s blunder

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

8... Bg4+ grok-4.5 65 s brilliant

Thought for 65 s. The provider returned no reasoning text for this move.

9. Ke4 gpt-5.4-nano 1 s inaccuracy

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

9... Bxe2+ grok-4.5 261 s brilliant

Thought for 261 s. The provider returned no reasoning text for this move.

10. Ke5 gpt-5.4-nano 1 s good

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

10... Bxd1 grok-4.5 278 s best

Thought for 278 s. The provider returned no reasoning text for this move.

11. Bc4 gpt-5.4-nano 1 s best

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

11... Qf6+ grok-4.5 115 s brilliant

Thought for 115 s. The provider returned no reasoning text for this move.

12. Ke4 gpt-5.4-nano 1 s best

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

12... Qxd4+ grok-4.5 617 s blunder

Thought for 617 s. The provider returned no reasoning text for this move.

13. Kxd4 gpt-5.4-nano 1 s best

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

13... O-O-O+ grok-4.5 22 s best

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

14. Ke5 gpt-5.4-nano 1 s inaccuracy

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

14... Bd6+ grok-4.5 297 s brilliant

Thought for 297 s. The provider returned no reasoning text for this move.

15. Kf5 gpt-5.4-nano 1 s best

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

15... Bxc2+ grok-4.5 114 s best

Thought for 114 s. The provider returned no reasoning text for this move.

16. Kg5 gpt-5.4-nano 1 s good

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

16... h6+ grok-4.5 433 s good

Thought for 433 s. The provider returned no reasoning text for this move.

17. Kh5 gpt-5.4-nano 1 s good

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

17... g6+ grok-4.5 363 s good

Thought for 363 s. The provider returned no reasoning text for this move.

18. Kg4 gpt-5.4-nano 2 s good

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

18... Bf5+ grok-4.5 217 s brilliant

Thought for 217 s. The provider returned no reasoning text for this move.

19. Kh4 gpt-5.4-nano 1 s inaccuracy

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

19... g5+ grok-4.5 244 s good

Thought for 244 s. The provider returned no reasoning text for this move.

20. Bxg5 gpt-5.4-nano 1 s good

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

20... hxg5+ grok-4.5 19 s best

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

21. Kxg5 gpt-5.4-nano 1 s best

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

21... Rdg8+ grok-4.5 488 s mistake

Thought for 488 s. The provider returned no reasoning text for this move.

22. Kxf5 gpt-5.4-nano 1 s best

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

22... Rg5+ grok-4.5 626 s blunder

Thought for 626 s. The provider returned no reasoning text for this move.

23. Kxg5 gpt-5.4-nano 1 s best

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

23... Be7+ grok-4.5 186 s best

Thought for 186 s. The provider returned no reasoning text for this move.

24. Kf5 gpt-5.4-nano 1 s best

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

24... Rh5+ grok-4.5 20 s good

Thought for 20 s. The provider returned no reasoning text for this move.

25. Kf4 gpt-5.4-nano 1 s best

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

25... Bd6+ grok-4.5 131 s best

Thought for 131 s. The provider returned no reasoning text for this move.

26. Ke4 gpt-5.4-nano 1 s good

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

26... Re5+ grok-4.5 511 s best

Thought for 511 s. The provider returned no reasoning text for this move.

27. Kd4 gpt-5.4-nano 1 s good

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

27... Bc5+ grok-4.5 818 s inaccuracy

Thought for 818 s. The provider returned no reasoning text for this move.

28. Kc3 gpt-5.4-nano 2 s inaccuracy

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

28... Re3+ grok-4.5 43 s good

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

29. Kc2 gpt-5.4-nano 1 s best

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

29... Re4 grok-4.5 443 s best

Thought for 443 s. The provider returned no reasoning text for this move.

30. Bxf7 gpt-5.4-nano 1 s good

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

30... Re2+ grok-4.5 140 s best

Thought for 140 s. The provider returned no reasoning text for this move.

31. Kb3 gpt-5.4-nano 1 s good

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

31... Re3+ grok-4.5 264 s good

Thought for 264 s. The provider returned no reasoning text for this move.

32. Kc4 gpt-5.4-nano 1 s best

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

32... b5+ grok-4.5 465 s good

Thought for 465 s. The provider returned no reasoning text for this move.

33. Kxc5 gpt-5.4-nano 1 s best

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

33... Re7 grok-4.5 73 s good

Thought for 73 s. The provider returned no reasoning text for this move.

34. Kxc6 gpt-5.4-nano 1 s good

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

34... Rxf7 grok-4.5 19 s best

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

35. Kxb5 gpt-5.4-nano 1 s good

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

35... Rf5+ grok-4.5 34 s best

Thought for 34 s. The provider returned no reasoning text for this move.

36. Kb4 gpt-5.4-nano 1 s good

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

36... Rf4+ grok-4.5 35 s good

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

37. Ka5 gpt-5.4-nano 1 s good

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

37... Ra4+ grok-4.5 14 s inaccuracy

Thought for 14 s. The provider returned no reasoning text for this move.

38. Kxa4 gpt-5.4-nano 1 s best

Played from memory: no reasoning was produced 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.