benchlm.ai

Claude Opus 4.5 vs Claude Sonnet 4.6

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 79 (1 point difference).Claude Sonnet 4.6 wins 1 out of 4 categories.

Claude Opus 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score79

Claude Sonnet 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score80

Knowledge

Tie

Claude Opus 4.5

96

Claude Sonnet 4.6

96

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

Coding

Claude Sonnet 4.6

Claude Opus 4.5

91

Claude Sonnet 4.6

93

91
HumanEval
93

Mathematics

Tie

Claude Opus 4.5

97.1

Claude Sonnet 4.6

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

Tie

Claude Opus 4.5

94

Claude Sonnet 4.6

94

95
SimpleQA
95
93
MuSR
93

Frequently Asked Questions

Which is better, Claude Opus 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 scores higher overall with 80 vs 79, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, Claude Opus 4.5 or Claude Sonnet 4.6?

Claude Opus 4.5 and Claude Sonnet 4.6 are tied for knowledge tasks with average scores of 96.

Which is better for coding, Claude Opus 4.5 or Claude Sonnet 4.6?

Claude Sonnet 4.6 leads in coding with an average score of 93 vs 91.

Which is better for math, Claude Opus 4.5 or Claude Sonnet 4.6?

Claude Opus 4.5 and Claude Sonnet 4.6 are tied for math with average scores of 97.1.

Which is better for reasoning, Claude Opus 4.5 or Claude Sonnet 4.6?

Claude Opus 4.5 and Claude Sonnet 4.6 are tied for reasoning with average scores of 94.

Related Comparisons

Claude Opus 4.5 vs GPT-5.4Claude Opus 4.5 vs Gemini 3.1 ProClaude Opus 4.5 vs Claude Opus 4.6Claude Opus 4.5 vs GPT-5.3 CodexClaude Opus 4.5 vs Grok 4.1Claude Opus 4.5 vs GPT-5.2