Gemini 1.5 Pro vs GPT-4o mini

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

Gemini 1.5 Pro is clearly ahead on the aggregate, 55 to 43. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 1.5 Pro gives you the larger context window at 2M, compared with 128K for GPT-4o mini.

Quick Verdict

Pick Gemini 1.5 Pro if you want the stronger benchmark profile. GPT-4o mini only becomes the better choice if coding is the priority.

Knowledge

GPT-4o mini

Gemini 1.5 Pro

51.3

GPT-4o mini

82

64
MMLU
82
64
GPQA
-
62
SuperGPQA
-
60
OpenBookQA
-
57
MMLU-Pro
-
1
HLE
-

Coding

GPT-4o mini

Gemini 1.5 Pro

27.7

GPT-4o mini

87.2

56
HumanEval
87.2
5
SWE-bench Verified
-
22
LiveCodeBench
-

Mathematics

Gemini 1.5 Pro
64
AIME 2023
-
66
AIME 2024
-
65
AIME 2025
-
60
HMMT Feb 2023
-
62
HMMT Feb 2024
-
61
HMMT Feb 2025
-
63
BRUMO 2025
-
73
MATH-500
-

Reasoning

Gemini 1.5 Pro
62
SimpleQA
-
60
MuSR
-
74
BBH
-

Instruction Following

Gemini 1.5 Pro
77
IFEval
-

Multilingual

GPT-4o mini

Gemini 1.5 Pro

76

GPT-4o mini

87

76
MGSM
87

Frequently Asked Questions

Which is better, Gemini 1.5 Pro or GPT-4o mini?

Gemini 1.5 Pro is ahead overall, 55 to 43. The biggest single separator in this matchup is HumanEval, where the scores are 56 and 87.2.

Which is better for knowledge tasks, Gemini 1.5 Pro or GPT-4o mini?

GPT-4o mini has the edge for knowledge tasks in this comparison, averaging 82 versus 51.3. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 1.5 Pro or GPT-4o mini?

GPT-4o mini has the edge for coding in this comparison, averaging 87.2 versus 27.7. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Gemini 1.5 Pro or GPT-4o mini?

GPT-4o mini has the edge for multilingual tasks in this comparison, averaging 87 versus 76. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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