benchlm.ai

Claude Sonnet 4.5 vs Grok 4

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Claude Sonnet 4.5 wins overall with a score of 74 vs 69 (5 point difference).Claude Sonnet 4.5 wins 4 out of 4 categories.

Claude Sonnet 4.5

CreatorAnthropic
TypeProprietary
Context1M
Score74

Grok 4

CreatorxAI
TypeProprietary
Context128K
Score69

Knowledge

Claude Sonnet 4.5

Claude Sonnet 4.5

92

Grok 4

84.8

95
MMLU
87
93
GPQA
86
91
SuperGPQA
84
89
OpenBookQA
82

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5

87

Grok 4

79

87
HumanEval
79

Mathematics

Claude Sonnet 4.5

Claude Sonnet 4.5

96

Grok 4

86.6

97
AIME 2023
87
99
AIME 2024
89
98
AIME 2025
88
93
HMMT Feb 2023
84
95
HMMT Feb 2024
86
94
HMMT Feb 2025
85
96
BRUMO 2025
87

Reasoning

Claude Sonnet 4.5

Claude Sonnet 4.5

90

Grok 4

82

91
SimpleQA
83
89
MuSR
81

Frequently Asked Questions

Which is better, Claude Sonnet 4.5 or Grok 4?

Claude Sonnet 4.5 scores higher overall with 74 vs 69, a difference of 5 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.5 or Grok 4?

Claude Sonnet 4.5 leads in knowledge tasks with an average score of 92 vs 84.8.

Which is better for coding, Claude Sonnet 4.5 or Grok 4?

Claude Sonnet 4.5 leads in coding with an average score of 87 vs 79.

Which is better for math, Claude Sonnet 4.5 or Grok 4?

Claude Sonnet 4.5 leads in math with an average score of 96 vs 86.6.

Which is better for reasoning, Claude Sonnet 4.5 or Grok 4?

Claude Sonnet 4.5 leads in reasoning with an average score of 90 vs 82.

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