GPT-5 (high) vs Grok 4.1 Fast

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

Quick Verdict

Grok 4.1 Fast wins overall with a score of 73 vs 72 (1 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Knowledge

Grok 4.1 Fast

GPT-5 (high)

90

Grok 4.1 Fast

91

93
MMLU
94
91
GPQA
92
89
SuperGPQA
90
87
OpenBookQA
88

Coding

Grok 4.1 Fast

GPT-5 (high)

85

Grok 4.1 Fast

86

85
HumanEval
86

Mathematics

Grok 4.1 Fast

GPT-5 (high)

94

Grok 4.1 Fast

95

95
AIME 2023
96
97
AIME 2024
98
96
AIME 2025
97
91
HMMT Feb 2023
92
93
HMMT Feb 2024
94
92
HMMT Feb 2025
93
94
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

GPT-5 (high)

88

Grok 4.1 Fast

89

89
SimpleQA
90
87
MuSR
88

Frequently Asked Questions

Which is better, GPT-5 (high) or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 72, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, GPT-5 (high) or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 90.

Which is better for coding, GPT-5 (high) or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 85.

Which is better for math, GPT-5 (high) or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 94.

Which is better for reasoning, GPT-5 (high) or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 88.