benchlm.ai

Gemini 3.1 Flash-Lite vs o3-pro

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

o3-pro wins overall with a score of 68 vs 53 (15 point difference).o3-pro wins 4 out of 4 categories.

Gemini 3.1 Flash-Lite

CreatorGoogle
TypeProprietary
Context1M
Score53

o3-pro

CreatorOpenAI
TypeProprietary
Context200K
Score68

Knowledge

o3-pro

Gemini 3.1 Flash-Lite

60.8

o3-pro

87.3

63
MMLU
88
62
GPQA
89
60
SuperGPQA
87
58
OpenBookQA
85

Coding

o3-pro

Gemini 3.1 Flash-Lite

55

o3-pro

80

55
HumanEval
80

Mathematics

o3-pro

Gemini 3.1 Flash-Lite

62

o3-pro

89

63
AIME 2023
90
65
AIME 2024
92
64
AIME 2025
91
59
HMMT Feb 2023
86
61
HMMT Feb 2024
88
60
HMMT Feb 2025
87
62
BRUMO 2025
89

Reasoning

o3-pro

Gemini 3.1 Flash-Lite

59

o3-pro

85

60
SimpleQA
86
58
MuSR
84

Frequently Asked Questions

Which is better, Gemini 3.1 Flash-Lite or o3-pro?

o3-pro scores higher overall with 68 vs 53, a difference of 15 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Flash-Lite or o3-pro?

o3-pro leads in knowledge tasks with an average score of 87.3 vs 60.8.

Which is better for coding, Gemini 3.1 Flash-Lite or o3-pro?

o3-pro leads in coding with an average score of 80 vs 55.

Which is better for math, Gemini 3.1 Flash-Lite or o3-pro?

o3-pro leads in math with an average score of 89 vs 62.

Which is better for reasoning, Gemini 3.1 Flash-Lite or o3-pro?

o3-pro leads in reasoning with an average score of 85 vs 59.

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