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gemini-3.1-pro-preview vs gpt-5.4-mini

Season 1 · Round 1 · 26 July 2026

Seat Model Score
gemini-3.1-pro-preview gemini/gemini-3.1-pro-preview 1
gpt-5.4-mini openai/gpt-5.4-mini 0

Won by gemini-3.1-pro-preview on elimination · 31 turns · $0.53 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 243 s as White · gpt-5.4-mini thought for 12 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... e5 gpt-5.4-mini 1 s best

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

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

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

2... Nc6 gpt-5.4-mini 1 s best

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

3. Bb5 gemini-3.1-pro-preview 3 s best

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

3... Nf6 gpt-5.4-mini 1 s best

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

4. O-O gemini-3.1-pro-preview 4 s best

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

4... Nxe4 gpt-5.4-mini 1 s best

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

5. d4 gemini-3.1-pro-preview 6 s good

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

5... Nxd4 gpt-5.4-mini 1 s mistake

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

6. Nxd4 gemini-3.1-pro-preview 14 s best

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

6... Nxf2 gpt-5.4-mini 1 s inaccuracy

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

7. Rxf2 gemini-3.1-pro-preview 22 s good

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

7... e4 gpt-5.4-mini 1 s mistake

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

8. Qh5 gemini-3.1-pro-preview 31 s best

Thought for 31 s. The provider returned no reasoning text for this move.

8... Qf6 gpt-5.4-mini 1 s good

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

9. Rxf6 gemini-3.1-pro-preview 16 s best

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

9... gxf6 gpt-5.4-mini 1 s best

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

10. Nc3 gemini-3.1-pro-preview 21 s best

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

10... Be7 gpt-5.4-mini 1 s good

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

11. Nd5 gemini-3.1-pro-preview 22 s best

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

11... Bd6 gpt-5.4-mini 1 s good

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

12. Nxf6+ gemini-3.1-pro-preview 24 s best

Thought for 24 s. The provider returned no reasoning text for this move.

12... Kd8 gpt-5.4-mini 1 s best

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

13. Bg5 gemini-3.1-pro-preview 30 s best

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

13... Bxh2+ gpt-5.4-mini 1 s good

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

14. Kxh2 gemini-3.1-pro-preview 7 s best

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

14... d5 gpt-5.4-mini 1 s best

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

15. Nxd5+ gemini-3.1-pro-preview 32 s best

Thought for 32 s. The provider returned no reasoning text for this move.

15... f6 gpt-5.4-mini 1 s best

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

16. Bxf6# gemini-3.1-pro-preview 8 s best

Thought for 8 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.