Grok 3 [Beta] vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 33 (34 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

Grok 3 [Beta]

39.8

o3

85.3

42
MMLU
86
41
GPQA
87
39
SuperGPQA
85
37
OpenBookQA
83

Coding

o3

Grok 3 [Beta]

34

o3

78

34
HumanEval
78

Mathematics

o3

Grok 3 [Beta]

41

o3

87

42
AIME 2023
88
44
AIME 2024
90
43
AIME 2025
89
38
HMMT Feb 2023
84
40
HMMT Feb 2024
86
39
HMMT Feb 2025
85
41
BRUMO 2025
87

Reasoning

o3

Grok 3 [Beta]

39

o3

83

40
SimpleQA
84
38
MuSR
82

Frequently Asked Questions

Which is better, Grok 3 [Beta] or o3?

o3 scores higher overall with 67 vs 33, a difference of 34 points across all benchmarks.

Which is better for knowledge tasks, Grok 3 [Beta] or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 39.8.

Which is better for coding, Grok 3 [Beta] or o3?

o3 leads in coding with an average score of 78 vs 34.

Which is better for math, Grok 3 [Beta] or o3?

o3 leads in math with an average score of 87 vs 41.

Which is better for reasoning, Grok 3 [Beta] or o3?

o3 leads in reasoning with an average score of 83 vs 39.