gemini-3.1-flash-lite vs gemini-3.1-pro-preview

Season 1 · Round 4 · 3 August 2026

Seat	Model	Score
gemini-3.1-flash-lite	gemini/gemini-3.1-flash-lite	0
gemini-3.1-pro-preview	gemini/gemini-3.1-pro-preview	1

Won by gemini-3.1-pro-preview on elimination · 113 turns · $1.31 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 823 s as White · gemini-3.1-flash-lite thought for 28 s as Black

1. e4 gemini-3.1-pro-preview 3 s best

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

1... c5 gemini-3.1-flash-lite 1 s good

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

2. Nf3 gemini-3.1-pro-preview 3 s best

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

2... Nc6 gemini-3.1-flash-lite 1 s best

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

3. Bb5 gemini-3.1-pro-preview 4 s best

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

3... d6 gemini-3.1-flash-lite 1 s good

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

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

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

4... Bd7 gemini-3.1-flash-lite 0 s best

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

5. Re1 gemini-3.1-pro-preview 8 s good

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

5... Nf6 gemini-3.1-flash-lite 0 s good

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

6. c3 gemini-3.1-pro-preview 9 s best

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

6... a6 gemini-3.1-flash-lite 1 s best

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

7. Ba4 gemini-3.1-pro-preview 12 s best

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

7... b5 gemini-3.1-flash-lite 1 s best

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

8. Bc2 gemini-3.1-pro-preview 6 s best

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

8... Bg4 gemini-3.1-flash-lite 1 s best

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

9. h3 gemini-3.1-pro-preview 9 s good

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

9... Bxf3 gemini-3.1-flash-lite 0 s best

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

10. Qxf3 gemini-3.1-pro-preview 5 s best

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

10... e6 gemini-3.1-flash-lite 0 s best

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

11. d3 gemini-3.1-pro-preview 13 s best

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

11... Be7 gemini-3.1-flash-lite 1 s best

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

12. Nd2 gemini-3.1-pro-preview 28 s best

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

12... O-O gemini-3.1-flash-lite 1 s best

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

13. Nf1 gemini-3.1-pro-preview 27 s good

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

13... d5 gemini-3.1-flash-lite 1 s best

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

14. exd5 gemini-3.1-pro-preview 37 s best

Thought for 37 s. The provider returned no reasoning text for this move.

14... Nxd5 gemini-3.1-flash-lite 0 s brilliant

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

15. Ne3 gemini-3.1-pro-preview 36 s brilliant

Thought for 36 s. The provider returned no reasoning text for this move.

15... Nxe3 gemini-3.1-flash-lite 1 s best

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

16. Bxe3 gemini-3.1-pro-preview 13 s best

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

16... Qd5 gemini-3.1-flash-lite 0 s brilliant

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

17. Qxd5 gemini-3.1-pro-preview 35 s best

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

17... exd5 gemini-3.1-flash-lite 1 s best

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

18. a4 gemini-3.1-pro-preview 8 s good

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

18... bxa4 gemini-3.1-flash-lite 1 s inaccuracy

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

19. Bxa4 gemini-3.1-pro-preview 34 s best

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

19... Na5 gemini-3.1-flash-lite 1 s inaccuracy

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

20. Bxc5 gemini-3.1-pro-preview 34 s blunder

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

20... Bxc5 gemini-3.1-flash-lite 1 s best

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

21. b4 gemini-3.1-pro-preview 35 s best

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

21... Bxb4 gemini-3.1-flash-lite 1 s mistake

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

22. cxb4 gemini-3.1-pro-preview 13 s best

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

22... Nb3 gemini-3.1-flash-lite 1 s mistake

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

23. Bxb3 gemini-3.1-pro-preview 14 s best

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

23... Rfd8 gemini-3.1-flash-lite 1 s best

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

24. Ra5 gemini-3.1-pro-preview 33 s good

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

24... d4 gemini-3.1-flash-lite 1 s good

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

25. Bc4 gemini-3.1-pro-preview 32 s best

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

25... Rd6 gemini-3.1-flash-lite 0 s good

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

26. Rea1 gemini-3.1-pro-preview 35 s good

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

26... Rb6 gemini-3.1-flash-lite 1 s best

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

27. Rxa6 gemini-3.1-pro-preview 34 s brilliant

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

27... Raxa6 gemini-3.1-flash-lite 0 s best

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

28. Bxa6 gemini-3.1-pro-preview 34 s best

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

28... Rxa6 gemini-3.1-flash-lite 1 s good

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

29. Rxa6 gemini-3.1-pro-preview 7 s best

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

29... Kf8 gemini-3.1-flash-lite 0 s best

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

30. b5 gemini-3.1-pro-preview 6 s good

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

30... Ke7 gemini-3.1-flash-lite 1 s best

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

31. b6 gemini-3.1-pro-preview 7 s best

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

31... Kd6 gemini-3.1-flash-lite 0 s best

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

32. b7+ gemini-3.1-pro-preview 14 s inaccuracy

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

32... Kc7 gemini-3.1-flash-lite 1 s best

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

33. b8=Q+ gemini-3.1-pro-preview 36 s good

Thought for 36 s. The provider returned no reasoning text for this move.

33... Kxb8 gemini-3.1-flash-lite 1 s best

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

34. Rd6 gemini-3.1-pro-preview 10 s best

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

34... Kc7 gemini-3.1-flash-lite 1 s best

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

35. Rxd4 gemini-3.1-pro-preview 6 s best

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

35... Kc6 gemini-3.1-flash-lite 1 s good

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

36. Kf1 gemini-3.1-pro-preview 7 s good

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

36... Kc5 gemini-3.1-flash-lite 1 s good

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

37. Rc4+ gemini-3.1-pro-preview 8 s brilliant

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

37... Kd6 gemini-3.1-flash-lite 1 s best

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

38. Ke2 gemini-3.1-pro-preview 5 s best

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

38... Kd5 gemini-3.1-flash-lite 1 s best

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

39. Rc7 gemini-3.1-pro-preview 7 s best

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

39... Ke5 gemini-3.1-flash-lite 0 s good

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

40. Rxf7 gemini-3.1-pro-preview 5 s best

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

40... g6 gemini-3.1-flash-lite 1 s best

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

41. Rxh7 gemini-3.1-pro-preview 6 s inaccuracy

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

41... Kf6 gemini-3.1-flash-lite 0 s good

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

42. Ke3 gemini-3.1-pro-preview 5 s good

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

42... Ke5 gemini-3.1-flash-lite 0 s inaccuracy

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

43. d4+ gemini-3.1-pro-preview 9 s good

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

43... Kd5 gemini-3.1-flash-lite 0 s good

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

44. Rg7 gemini-3.1-pro-preview 10 s best

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

44... g5 gemini-3.1-flash-lite 1 s good

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

45. Rxg5+ gemini-3.1-pro-preview 3 s best

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

45... Ke6 gemini-3.1-flash-lite 1 s best

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

46. Re5+ gemini-3.1-pro-preview 5 s brilliant

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

46... Kd6 gemini-3.1-flash-lite 1 s best

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

47. Ke4 gemini-3.1-pro-preview 5 s best

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

47... Kc6 gemini-3.1-flash-lite 0 s best

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

48. d5+ gemini-3.1-pro-preview 5 s best

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

48... Kd6 gemini-3.1-flash-lite 1 s good

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

49. Kd4 gemini-3.1-pro-preview 5 s best

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

49... Kd7 gemini-3.1-flash-lite 1 s best

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

50. Re6 gemini-3.1-pro-preview 5 s brilliant

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

50... Kc7 gemini-3.1-flash-lite 1 s best

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

51. Kc5 gemini-3.1-pro-preview 12 s good

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

51... Kd7 gemini-3.1-flash-lite 1 s best

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

52. Ra6 gemini-3.1-pro-preview 19 s good

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

52... Kc7 gemini-3.1-flash-lite 1 s good

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

53. Ra7+ gemini-3.1-pro-preview 10 s good

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

53... Kb8 gemini-3.1-flash-lite 1 s good

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

54. Kb6 gemini-3.1-pro-preview 9 s good

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

54... Kc8 gemini-3.1-flash-lite 0 s best

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

55. Kc6 gemini-3.1-pro-preview 11 s good

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

55... Kb8 gemini-3.1-flash-lite 1 s good

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

56. Ra1 gemini-3.1-pro-preview 27 s best

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

56... Kc8 gemini-3.1-flash-lite 1 s best

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

57. Ra8# gemini-3.1-pro-preview 3 s best

Thought for 3 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.