Gemini 3.1 Flash-Lite vs GPT-5.1

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

Quick Verdict

GPT-5.1 wins overall with a score of 76 vs 53 (23 point difference).GPT-5.1 wins 4 out of 4 categories.

Knowledge

GPT-5.1

Gemini 3.1 Flash-Lite

60.8

GPT-5.1

94

63
MMLU
97
62
GPQA
95
60
SuperGPQA
93
58
OpenBookQA
91

Coding

GPT-5.1

Gemini 3.1 Flash-Lite

55

GPT-5.1

89

55
HumanEval
89

Mathematics

GPT-5.1

Gemini 3.1 Flash-Lite

62

GPT-5.1

97.1

63
AIME 2023
99
65
AIME 2024
99
64
AIME 2025
98
59
HMMT Feb 2023
95
61
HMMT Feb 2024
97
60
HMMT Feb 2025
96
62
BRUMO 2025
96

Reasoning

GPT-5.1

Gemini 3.1 Flash-Lite

59

GPT-5.1

92

60
SimpleQA
93
58
MuSR
91

Frequently Asked Questions

Which is better, Gemini 3.1 Flash-Lite or GPT-5.1?

GPT-5.1 scores higher overall with 76 vs 53, a difference of 23 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Flash-Lite or GPT-5.1?

GPT-5.1 leads in knowledge tasks with an average score of 94 vs 60.8.

Which is better for coding, Gemini 3.1 Flash-Lite or GPT-5.1?

GPT-5.1 leads in coding with an average score of 89 vs 55.

Which is better for math, Gemini 3.1 Flash-Lite or GPT-5.1?

GPT-5.1 leads in math with an average score of 97.1 vs 62.

Which is better for reasoning, Gemini 3.1 Flash-Lite or GPT-5.1?

GPT-5.1 leads in reasoning with an average score of 92 vs 59.