benchlm.ai

Gemini 2.5 Flash vs o4-mini (high)

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

Quick Verdict

o4-mini (high) wins overall with a score of 65 vs 41 (24 point difference).o4-mini (high) wins 4 out of 4 categories.

Gemini 2.5 Flash

CreatorGoogle
TypeProprietary
Context1M
Score41

o4-mini (high)

CreatorOpenAI
TypeProprietary
Context200K
Score65

Knowledge

o4-mini (high)

Gemini 2.5 Flash

47.8

o4-mini (high)

80.5

50
MMLU
82
49
GPQA
82
47
SuperGPQA
80
45
OpenBookQA
78

Coding

o4-mini (high)

Gemini 2.5 Flash

42

o4-mini (high)

74

42
HumanEval
74

Mathematics

o4-mini (high)

Gemini 2.5 Flash

49

o4-mini (high)

82

50
AIME 2023
83
52
AIME 2024
85
51
AIME 2025
84
46
HMMT Feb 2023
79
48
HMMT Feb 2024
81
47
HMMT Feb 2025
80
49
BRUMO 2025
82

Reasoning

o4-mini (high)

Gemini 2.5 Flash

47

o4-mini (high)

79

48
SimpleQA
80
46
MuSR
78

Frequently Asked Questions

Which is better, Gemini 2.5 Flash or o4-mini (high)?

o4-mini (high) scores higher overall with 65 vs 41, a difference of 24 points across all benchmarks.

Which is better for knowledge tasks, Gemini 2.5 Flash or o4-mini (high)?

o4-mini (high) leads in knowledge tasks with an average score of 80.5 vs 47.8.

Which is better for coding, Gemini 2.5 Flash or o4-mini (high)?

o4-mini (high) leads in coding with an average score of 74 vs 42.

Which is better for math, Gemini 2.5 Flash or o4-mini (high)?

o4-mini (high) leads in math with an average score of 82 vs 49.

Which is better for reasoning, Gemini 2.5 Flash or o4-mini (high)?

o4-mini (high) leads in reasoning with an average score of 79 vs 47.

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