benchlm.ai

Claude 3 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 51 (22 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Claude 3 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score51

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

Claude 3 Opus

59.5

Grok 4.1 Fast

91

61
MMLU
94
61
GPQA
92
59
SuperGPQA
90
57
OpenBookQA
88

Coding

Grok 4.1 Fast

Claude 3 Opus

53

Grok 4.1 Fast

86

53
HumanEval
86

Mathematics

Grok 4.1 Fast

Claude 3 Opus

60

Grok 4.1 Fast

95

61
AIME 2023
96
63
AIME 2024
98
62
AIME 2025
97
57
HMMT Feb 2023
92
59
HMMT Feb 2024
94
58
HMMT Feb 2025
93
60
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

Claude 3 Opus

58

Grok 4.1 Fast

89

59
SimpleQA
90
57
MuSR
88

Frequently Asked Questions

Which is better, Claude 3 Opus or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 51, a difference of 22 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 59.5.

Which is better for coding, Claude 3 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 53.

Which is better for math, Claude 3 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 60.

Which is better for reasoning, Claude 3 Opus or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 58.

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