benchlm.ai

Gemini 3 Flash vs GPT-5 (medium)

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

Quick Verdict

GPT-5 (medium) wins overall with a score of 70 vs 58 (12 point difference).GPT-5 (medium) wins 4 out of 4 categories.

Gemini 3 Flash

CreatorGoogle
TypeProprietary
Context1M
Score58

GPT-5 (medium)

CreatorOpenAI
TypeProprietary
Context128K
Score70

Knowledge

GPT-5 (medium)

Gemini 3 Flash

67.8

GPT-5 (medium)

88

70
MMLU
91
69
GPQA
89
67
SuperGPQA
87
65
OpenBookQA
85

Coding

GPT-5 (medium)

Gemini 3 Flash

62

GPT-5 (medium)

83

62
HumanEval
83

Mathematics

GPT-5 (medium)

Gemini 3 Flash

69

GPT-5 (medium)

92

70
AIME 2023
93
72
AIME 2024
95
71
AIME 2025
94
66
HMMT Feb 2023
89
68
HMMT Feb 2024
91
67
HMMT Feb 2025
90
69
BRUMO 2025
92

Reasoning

GPT-5 (medium)

Gemini 3 Flash

66

GPT-5 (medium)

86

67
SimpleQA
87
65
MuSR
85

Frequently Asked Questions

Which is better, Gemini 3 Flash or GPT-5 (medium)?

GPT-5 (medium) scores higher overall with 70 vs 58, a difference of 12 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3 Flash or GPT-5 (medium)?

GPT-5 (medium) leads in knowledge tasks with an average score of 88 vs 67.8.

Which is better for coding, Gemini 3 Flash or GPT-5 (medium)?

GPT-5 (medium) leads in coding with an average score of 83 vs 62.

Which is better for math, Gemini 3 Flash or GPT-5 (medium)?

GPT-5 (medium) leads in math with an average score of 92 vs 69.

Which is better for reasoning, Gemini 3 Flash or GPT-5 (medium)?

GPT-5 (medium) leads in reasoning with an average score of 86 vs 66.

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