GPT-5 (high) vs Grok Code Fast 1

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

Quick Verdict

GPT-5 (high) wins overall with a score of 72 vs 54 (18 point difference).GPT-5 (high) wins 4 out of 4 categories.

Knowledge

GPT-5 (high)

GPT-5 (high)

90

Grok Code Fast 1

61.8

93
MMLU
64
91
GPQA
63
89
SuperGPQA
61
87
OpenBookQA
59

Coding

GPT-5 (high)

GPT-5 (high)

85

Grok Code Fast 1

60

85
HumanEval
60

Mathematics

GPT-5 (high)

GPT-5 (high)

94

Grok Code Fast 1

63

95
AIME 2023
64
97
AIME 2024
66
96
AIME 2025
65
91
HMMT Feb 2023
60
93
HMMT Feb 2024
62
92
HMMT Feb 2025
61
94
BRUMO 2025
63

Reasoning

GPT-5 (high)

GPT-5 (high)

88

Grok Code Fast 1

60

89
SimpleQA
61
87
MuSR
59

Frequently Asked Questions

Which is better, GPT-5 (high) or Grok Code Fast 1?

GPT-5 (high) scores higher overall with 72 vs 54, a difference of 18 points across all benchmarks.

Which is better for knowledge tasks, GPT-5 (high) or Grok Code Fast 1?

GPT-5 (high) leads in knowledge tasks with an average score of 90 vs 61.8.

Which is better for coding, GPT-5 (high) or Grok Code Fast 1?

GPT-5 (high) leads in coding with an average score of 85 vs 60.

Which is better for math, GPT-5 (high) or Grok Code Fast 1?

GPT-5 (high) leads in math with an average score of 94 vs 63.

Which is better for reasoning, GPT-5 (high) or Grok Code Fast 1?

GPT-5 (high) leads in reasoning with an average score of 88 vs 60.