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gemini-3.1-pro-preview vs gpt-5.5

Season 1 · Round 6 · 6 August 2026

Seat Model Score
gemini-3.1-pro-preview gemini/gemini-3.1-pro-preview 1
gpt-5.5 openai/gpt-5.5 0

Won by gemini-3.1-pro-preview on elimination · 38 turns · $2.57 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.

gemini-3.1-pro-preview thought for 626 s as White · gpt-5.5 thought for 489 s as Black

1. e4 gemini-3.1-pro-preview 8 s best

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

1... c5 gpt-5.5 7 s good

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

2. Nf3 gemini-3.1-pro-preview 227 s best

Thought for 227 s. The provider returned no reasoning text for this move.

2... d6 gpt-5.5 10 s good

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

3. d4 gemini-3.1-pro-preview 173 s best

Thought for 173 s. The provider returned no reasoning text for this move.

3... cxd4 gpt-5.5 10 s best

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

4. Nxd4 gemini-3.1-pro-preview 5 s best

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

4... Nf6 gpt-5.5 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

5. Nc3 gemini-3.1-pro-preview 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

5... a6 gpt-5.5 11 s best

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

6. Bg5 gemini-3.1-pro-preview 5 s good

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

6... e6 gpt-5.5 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

7. f4 gemini-3.1-pro-preview 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

7... Be7 gpt-5.5 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

8. Qf3 gemini-3.1-pro-preview 5 s best

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

8... Qc7 gpt-5.5 22 s best

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

9. O-O-O gemini-3.1-pro-preview 7 s best

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

9... Nbd7 gpt-5.5 27 s best

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

10. Bd3 gemini-3.1-pro-preview 17 s good

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

10... b5 gpt-5.5 22 s best

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

11. Rhe1 gemini-3.1-pro-preview 22 s best

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

11... Bb7 gpt-5.5 41 s best

Thought for 41 s. The provider returned no reasoning text for this move.

12. a3 gemini-3.1-pro-preview 11 s good

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

12... Rc8 gpt-5.5 25 s inaccuracy

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

13. Qg3 gemini-3.1-pro-preview 17 s inaccuracy

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

13... O-O gpt-5.5 56 s inaccuracy

Thought for 56 s. The provider returned no reasoning text for this move.

14. e5 gemini-3.1-pro-preview 43 s best

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

14... dxe5 gpt-5.5 69 s best

Thought for 69 s. The provider returned no reasoning text for this move.

15. fxe5 gemini-3.1-pro-preview 25 s best

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

15... Nxe5 gpt-5.5 53 s mistake

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

16. Rxe5 gemini-3.1-pro-preview 28 s brilliant

Thought for 28 s. The provider returned no reasoning text for this move.

16... Bd6 gpt-5.5 78 s mistake

Thought for 78 s. The provider returned no reasoning text for this move.

17. Bxf6 gemini-3.1-pro-preview 17 s best

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

17... Bxe5 gpt-5.5 44 s mistake

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

18. Qxg7# gemini-3.1-pro-preview 6 s brilliant

Thought for 6 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.