benchlm.ai

Claude 4.1 Opus 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 61 (12 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Claude 4.1 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score61

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

Claude 4.1 Opus

74.5

Grok 4.1 Fast

91

76
MMLU
94
76
GPQA
92
74
SuperGPQA
90
72
OpenBookQA
88

Coding

Grok 4.1 Fast

Claude 4.1 Opus

68

Grok 4.1 Fast

86

68
HumanEval
86

Mathematics

Grok 4.1 Fast

Claude 4.1 Opus

75

Grok 4.1 Fast

95

76
AIME 2023
96
78
AIME 2024
98
77
AIME 2025
97
72
HMMT Feb 2023
92
74
HMMT Feb 2024
94
73
HMMT Feb 2025
93
75
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

Claude 4.1 Opus

73

Grok 4.1 Fast

89

74
SimpleQA
90
72
MuSR
88

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 61, a difference of 12 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 74.5.

Which is better for coding, Claude 4.1 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 68.

Which is better for math, Claude 4.1 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 75.

Which is better for reasoning, Claude 4.1 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 73.

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