benchlm.ai

Gemini 3.1 Flash-Lite vs GPT-5 mini

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

Quick Verdict

GPT-5 mini wins overall with a score of 68 vs 53 (15 point difference).GPT-5 mini wins 4 out of 4 categories.

Gemini 3.1 Flash-Lite

CreatorGoogle
TypeProprietary
Context1M
Score53

GPT-5 mini

CreatorOpenAI
TypeProprietary
Context128K
Score68

Knowledge

GPT-5 mini

Gemini 3.1 Flash-Lite

60.8

GPT-5 mini

85

63
MMLU
88
62
GPQA
86
60
SuperGPQA
84
58
OpenBookQA
82

Coding

GPT-5 mini

Gemini 3.1 Flash-Lite

55

GPT-5 mini

80

55
HumanEval
80

Mathematics

GPT-5 mini

Gemini 3.1 Flash-Lite

62

GPT-5 mini

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

GPT-5 mini

Gemini 3.1 Flash-Lite

59

GPT-5 mini

83

60
SimpleQA
84
58
MuSR
82

Frequently Asked Questions

Which is better, Gemini 3.1 Flash-Lite or GPT-5 mini?

GPT-5 mini 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 GPT-5 mini?

GPT-5 mini leads in knowledge tasks with an average score of 85 vs 60.8.

Which is better for coding, Gemini 3.1 Flash-Lite or GPT-5 mini?

GPT-5 mini leads in coding with an average score of 80 vs 55.

Which is better for math, Gemini 3.1 Flash-Lite or GPT-5 mini?

GPT-5 mini leads in math with an average score of 89 vs 62.

Which is better for reasoning, Gemini 3.1 Flash-Lite or GPT-5 mini?

GPT-5 mini leads in reasoning with an average score of 83 vs 59.

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