benchlm.ai

Claude Sonnet 4.6 vs GPT-5.1

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

Quick Verdict

Claude Sonnet 4.6 wins overall with a score of 80 vs 76 (4 point difference).Claude Sonnet 4.6 wins 3 out of 4 categories.

Claude Sonnet 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score80

GPT-5.1

CreatorOpenAI
TypeProprietary
Context400K
Score76

Knowledge

Claude Sonnet 4.6

Claude Sonnet 4.6

96

GPT-5.1

94

99
MMLU
97
97
GPQA
95
95
SuperGPQA
93
93
OpenBookQA
91

Coding

Claude Sonnet 4.6

Claude Sonnet 4.6

93

GPT-5.1

89

93
HumanEval
89

Mathematics

Tie

Claude Sonnet 4.6

97.1

GPT-5.1

97.1

99
AIME 2023
99
99
AIME 2024
99
98
AIME 2025
98
95
HMMT Feb 2023
95
97
HMMT Feb 2024
97
96
HMMT Feb 2025
96
96
BRUMO 2025
96

Reasoning

Claude Sonnet 4.6

Claude Sonnet 4.6

94

GPT-5.1

92

95
SimpleQA
93
93
MuSR
91

Frequently Asked Questions

Which is better, Claude Sonnet 4.6 or GPT-5.1?

Claude Sonnet 4.6 scores higher overall with 80 vs 76, a difference of 4 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.6 or GPT-5.1?

Claude Sonnet 4.6 leads in knowledge tasks with an average score of 96 vs 94.

Which is better for coding, Claude Sonnet 4.6 or GPT-5.1?

Claude Sonnet 4.6 leads in coding with an average score of 93 vs 89.

Which is better for math, Claude Sonnet 4.6 or GPT-5.1?

Claude Sonnet 4.6 and GPT-5.1 are tied for math with average scores of 97.1.

Which is better for reasoning, Claude Sonnet 4.6 or GPT-5.1?

Claude Sonnet 4.6 leads in reasoning with an average score of 94 vs 92.

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