benchlm.ai

Claude Haiku 4.5 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 57 (16 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Claude Haiku 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score57

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

Claude Haiku 4.5

65.8

Grok 4.1 Fast

91

68
MMLU
94
67
GPQA
92
65
SuperGPQA
90
63
OpenBookQA
88

Coding

Grok 4.1 Fast

Claude Haiku 4.5

60

Grok 4.1 Fast

86

60
HumanEval
86

Mathematics

Grok 4.1 Fast

Claude Haiku 4.5

67

Grok 4.1 Fast

95

68
AIME 2023
96
70
AIME 2024
98
69
AIME 2025
97
64
HMMT Feb 2023
92
66
HMMT Feb 2024
94
65
HMMT Feb 2025
93
67
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

Claude Haiku 4.5

64

Grok 4.1 Fast

89

65
SimpleQA
90
63
MuSR
88

Frequently Asked Questions

Which is better, Claude Haiku 4.5 or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 57, a difference of 16 points across all benchmarks.

Which is better for knowledge tasks, Claude Haiku 4.5 or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 65.8.

Which is better for coding, Claude Haiku 4.5 or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 60.

Which is better for math, Claude Haiku 4.5 or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 67.

Which is better for reasoning, Claude Haiku 4.5 or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 64.

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