GPT-5.4 vs o4-mini (high)

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

Quick Verdict

GPT-5.4 wins overall with a score of 88 vs 65 (23 point difference).GPT-5.4 wins 4 out of 4 categories.

Knowledge

GPT-5.4

GPT-5.4

96

o4-mini (high)

80.5

99
MMLU
82
97
GPQA
82
95
SuperGPQA
80
93
OpenBookQA
78

Coding

GPT-5.4

GPT-5.4

91

o4-mini (high)

74

91
HumanEval
74

Mathematics

GPT-5.4

GPT-5.4

97.1

o4-mini (high)

82

99
AIME 2023
83
99
AIME 2024
85
98
AIME 2025
84
95
HMMT Feb 2023
79
97
HMMT Feb 2024
81
96
HMMT Feb 2025
80
96
BRUMO 2025
82

Reasoning

GPT-5.4

GPT-5.4

94

o4-mini (high)

79

95
SimpleQA
80
93
MuSR
78

Frequently Asked Questions

Which is better, GPT-5.4 or o4-mini (high)?

GPT-5.4 scores higher overall with 88 vs 65, a difference of 23 points across all benchmarks.

Which is better for knowledge tasks, GPT-5.4 or o4-mini (high)?

GPT-5.4 leads in knowledge tasks with an average score of 96 vs 80.5.

Which is better for coding, GPT-5.4 or o4-mini (high)?

GPT-5.4 leads in coding with an average score of 91 vs 74.

Which is better for math, GPT-5.4 or o4-mini (high)?

GPT-5.4 leads in math with an average score of 97.1 vs 82.

Which is better for reasoning, GPT-5.4 or o4-mini (high)?

GPT-5.4 leads in reasoning with an average score of 94 vs 79.