benchlm.ai

GPT-4o 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 56 (17 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

GPT-4o

CreatorOpenAI
TypeProprietary
Context128K
Score56

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

GPT-4o

64.5

Grok 4.1 Fast

91

66
MMLU
94
66
GPQA
92
64
SuperGPQA
90
62
OpenBookQA
88

Coding

Grok 4.1 Fast

GPT-4o

58

Grok 4.1 Fast

86

58
HumanEval
86

Mathematics

Grok 4.1 Fast

GPT-4o

65

Grok 4.1 Fast

95

66
AIME 2023
96
68
AIME 2024
98
67
AIME 2025
97
62
HMMT Feb 2023
92
64
HMMT Feb 2024
94
63
HMMT Feb 2025
93
65
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

GPT-4o

63

Grok 4.1 Fast

89

64
SimpleQA
90
62
MuSR
88

Frequently Asked Questions

Which is better, GPT-4o or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 56, a difference of 17 points across all benchmarks.

Which is better for knowledge tasks, GPT-4o or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 64.5.

Which is better for coding, GPT-4o or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 58.

Which is better for math, GPT-4o or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 65.

Which is better for reasoning, GPT-4o or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 63.

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