Grok Code Fast 1 vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 54 (13 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

Grok Code Fast 1

61.8

o3

85.3

64
MMLU
86
63
GPQA
87
61
SuperGPQA
85
59
OpenBookQA
83

Coding

o3

Grok Code Fast 1

60

o3

78

60
HumanEval
78

Mathematics

o3

Grok Code Fast 1

63

o3

87

64
AIME 2023
88
66
AIME 2024
90
65
AIME 2025
89
60
HMMT Feb 2023
84
62
HMMT Feb 2024
86
61
HMMT Feb 2025
85
63
BRUMO 2025
87

Reasoning

o3

Grok Code Fast 1

60

o3

83

61
SimpleQA
84
59
MuSR
82

Frequently Asked Questions

Which is better, Grok Code Fast 1 or o3?

o3 scores higher overall with 67 vs 54, a difference of 13 points across all benchmarks.

Which is better for knowledge tasks, Grok Code Fast 1 or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 61.8.

Which is better for coding, Grok Code Fast 1 or o3?

o3 leads in coding with an average score of 78 vs 60.

Which is better for math, Grok Code Fast 1 or o3?

o3 leads in math with an average score of 87 vs 63.

Which is better for reasoning, Grok Code Fast 1 or o3?

o3 leads in reasoning with an average score of 83 vs 60.