benchlm.ai

Claude Sonnet 4.6 vs o3

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 67 (13 point difference).Claude Sonnet 4.6 wins 4 out of 4 categories.

Claude Sonnet 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score80

o3

CreatorOpenAI
TypeProprietary
Context200K
Score67

Knowledge

Claude Sonnet 4.6

Claude Sonnet 4.6

96

o3

85.3

99
MMLU
86
97
GPQA
87
95
SuperGPQA
85
93
OpenBookQA
83

Coding

Claude Sonnet 4.6

Claude Sonnet 4.6

93

o3

78

93
HumanEval
78

Mathematics

Claude Sonnet 4.6

Claude Sonnet 4.6

97.1

o3

87

99
AIME 2023
88
99
AIME 2024
90
98
AIME 2025
89
95
HMMT Feb 2023
84
97
HMMT Feb 2024
86
96
HMMT Feb 2025
85
96
BRUMO 2025
87

Reasoning

Claude Sonnet 4.6

Claude Sonnet 4.6

94

o3

83

95
SimpleQA
84
93
MuSR
82

Frequently Asked Questions

Which is better, Claude Sonnet 4.6 or o3?

Claude Sonnet 4.6 scores higher overall with 80 vs 67, a difference of 13 points across all benchmarks.

Which is better for knowledge tasks, Claude Sonnet 4.6 or o3?

Claude Sonnet 4.6 leads in knowledge tasks with an average score of 96 vs 85.3.

Which is better for coding, Claude Sonnet 4.6 or o3?

Claude Sonnet 4.6 leads in coding with an average score of 93 vs 78.

Which is better for math, Claude Sonnet 4.6 or o3?

Claude Sonnet 4.6 leads in math with an average score of 97.1 vs 87.

Which is better for reasoning, Claude Sonnet 4.6 or o3?

Claude Sonnet 4.6 leads in reasoning with an average score of 94 vs 83.

Related Comparisons

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