benchlm.ai

Claude 4.1 Opus Thinking 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 29 (44 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Claude 4.1 Opus Thinking

CreatorAnthropic
TypeProprietary
Context200K
Score29

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

Claude 4.1 Opus Thinking

35.8

Grok 4.1 Fast

91

38
MMLU
94
37
GPQA
92
35
SuperGPQA
90
33
OpenBookQA
88

Coding

Grok 4.1 Fast

Claude 4.1 Opus Thinking

30

Grok 4.1 Fast

86

30
HumanEval
86

Mathematics

Grok 4.1 Fast

Claude 4.1 Opus Thinking

37

Grok 4.1 Fast

95

38
AIME 2023
96
40
AIME 2024
98
39
AIME 2025
97
34
HMMT Feb 2023
92
36
HMMT Feb 2024
94
35
HMMT Feb 2025
93
37
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

Claude 4.1 Opus Thinking

35

Grok 4.1 Fast

89

36
SimpleQA
90
34
MuSR
88

Frequently Asked Questions

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

Grok 4.1 Fast scores higher overall with 73 vs 29, a difference of 44 points across all benchmarks.

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

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 35.8.

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

Grok 4.1 Fast leads in coding with an average score of 86 vs 30.

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

Grok 4.1 Fast leads in math with an average score of 95 vs 37.

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

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 35.

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