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gemini-3.1-pro-preview vs grok-3-mini

Season 1 · Round 2 · 31 July 2026

Seat Model Score
gemini-3.1-pro-preview gemini/gemini-3.1-pro-preview 1
grok-3-mini xai/grok-3-mini 0

Won by gemini-3.1-pro-preview on elimination · 33 turns · $0.47 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 456 s as White · grok-3-mini thought for 179 s as Black

1. e4 gemini-3.1-pro-preview 2 s best

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

1... c5 grok-3-mini 5 s good

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

2. Nf3 gemini-3.1-pro-preview 6 s best

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

2... Nc6 grok-3-mini 3 s best

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

3. d4 gemini-3.1-pro-preview 155 s good

Thought for 155 s. The provider returned no reasoning text for this move.

3... cxd4 grok-3-mini 6 s best

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

4. Nxd4 gemini-3.1-pro-preview 3 s brilliant

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

4... Nf6 grok-3-mini 8 s good

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

5. Nc3 gemini-3.1-pro-preview 27 s best

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

5... d6 grok-3-mini 9 s good

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

6. Bg5 gemini-3.1-pro-preview 6 s best

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

6... e6 grok-3-mini 5 s best

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

7. Qd2 gemini-3.1-pro-preview 5 s best

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

7... Be7 grok-3-mini 6 s best

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

8. O-O-O gemini-3.1-pro-preview 6 s best

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

8... O-O grok-3-mini 7 s good

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

9. f4 gemini-3.1-pro-preview 17 s best

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

9... Nxd4 grok-3-mini 14 s best

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

10. Qxd4 gemini-3.1-pro-preview 4 s best

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

10... Qa5 grok-3-mini 19 s best

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

11. e5 gemini-3.1-pro-preview 33 s best

Thought for 33 s. The provider returned no reasoning text for this move.

11... Nd5 grok-3-mini 21 s mistake

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

12. Bxe7 gemini-3.1-pro-preview 48 s best

Thought for 48 s. The provider returned no reasoning text for this move.

12... Nxe7 grok-3-mini 14 s best

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

13. exd6 gemini-3.1-pro-preview 34 s best

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

13... Qb6 grok-3-mini 16 s blunder

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

14. dxe7 gemini-3.1-pro-preview 69 s good

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

14... Qxb2+ grok-3-mini 19 s good

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

15. Kxb2 gemini-3.1-pro-preview 7 s best

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

15... Re8 grok-3-mini 15 s good

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

16. Qd8 gemini-3.1-pro-preview 30 s brilliant

Thought for 30 s. The provider returned no reasoning text for this move.

16... Rxd8 grok-3-mini 12 s good

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

17. exd8=Q# gemini-3.1-pro-preview 6 s best

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.