Grok 4 vs o3

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

Quick Verdict

Grok 4 wins overall with a score of 69 vs 67 (2 point difference).Grok 4 wins 1 out of 4 categories.

Knowledge

o3

Grok 4

84.8

o3

85.3

87
MMLU
86
86
GPQA
87
84
SuperGPQA
85
82
OpenBookQA
83

Coding

Grok 4

Grok 4

79

o3

78

79
HumanEval
78

Mathematics

o3

Grok 4

86.6

o3

87

87
AIME 2023
88
89
AIME 2024
90
88
AIME 2025
89
84
HMMT Feb 2023
84
86
HMMT Feb 2024
86
85
HMMT Feb 2025
85
87
BRUMO 2025
87

Reasoning

o3

Grok 4

82

o3

83

83
SimpleQA
84
81
MuSR
82

Frequently Asked Questions

Which is better, Grok 4 or o3?

Grok 4 scores higher overall with 69 vs 67, a difference of 2 points across all benchmarks.

Which is better for knowledge tasks, Grok 4 or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 84.8.

Which is better for coding, Grok 4 or o3?

Grok 4 leads in coding with an average score of 79 vs 78.

Which is better for math, Grok 4 or o3?

o3 leads in math with an average score of 87 vs 86.6.

Which is better for reasoning, Grok 4 or o3?

o3 leads in reasoning with an average score of 83 vs 82.