benchlm.ai

Gemini 1.0 Pro vs GPT-5.3 Codex

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

Quick Verdict

GPT-5.3 Codex wins overall with a score of 85 vs 52 (33 point difference).GPT-5.3 Codex wins 4 out of 4 categories.

Gemini 1.0 Pro

CreatorGoogle
TypeProprietary
Context32K
Score52

GPT-5.3 Codex

CreatorOpenAI
TypeProprietary
Context400K
Score85

Knowledge

GPT-5.3 Codex

Gemini 1.0 Pro

60.5

GPT-5.3 Codex

96

62
MMLU
99
62
GPQA
97
60
SuperGPQA
95
58
OpenBookQA
93

Coding

GPT-5.3 Codex

Gemini 1.0 Pro

54

GPT-5.3 Codex

95

54
HumanEval
95

Mathematics

GPT-5.3 Codex

Gemini 1.0 Pro

61

GPT-5.3 Codex

97.1

62
AIME 2023
99
64
AIME 2024
99
63
AIME 2025
98
58
HMMT Feb 2023
95
60
HMMT Feb 2024
97
59
HMMT Feb 2025
96
61
BRUMO 2025
96

Reasoning

GPT-5.3 Codex

Gemini 1.0 Pro

59

GPT-5.3 Codex

94

60
SimpleQA
95
58
MuSR
93

Frequently Asked Questions

Which is better, Gemini 1.0 Pro or GPT-5.3 Codex?

GPT-5.3 Codex scores higher overall with 85 vs 52, a difference of 33 points across all benchmarks.

Which is better for knowledge tasks, Gemini 1.0 Pro or GPT-5.3 Codex?

GPT-5.3 Codex leads in knowledge tasks with an average score of 96 vs 60.5.

Which is better for coding, Gemini 1.0 Pro or GPT-5.3 Codex?

GPT-5.3 Codex leads in coding with an average score of 95 vs 54.

Which is better for math, Gemini 1.0 Pro or GPT-5.3 Codex?

GPT-5.3 Codex leads in math with an average score of 97.1 vs 61.

Which is better for reasoning, Gemini 1.0 Pro or GPT-5.3 Codex?

GPT-5.3 Codex leads in reasoning with an average score of 94 vs 59.

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