benchlm.ai

Claude 3.5 Sonnet vs Claude 3 Opus

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

Quick Verdict

Claude 3.5 Sonnet wins overall with a score of 55 vs 51 (4 point difference).Claude 3.5 Sonnet wins 4 out of 4 categories.

Claude 3.5 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score55

Claude 3 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score51

Knowledge

Claude 3.5 Sonnet

Claude 3.5 Sonnet

63.5

Claude 3 Opus

59.5

65
MMLU
61
65
GPQA
61
63
SuperGPQA
59
61
OpenBookQA
57

Coding

Claude 3.5 Sonnet

Claude 3.5 Sonnet

57

Claude 3 Opus

53

57
HumanEval
53

Mathematics

Claude 3.5 Sonnet

Claude 3.5 Sonnet

64

Claude 3 Opus

60

65
AIME 2023
61
67
AIME 2024
63
66
AIME 2025
62
61
HMMT Feb 2023
57
63
HMMT Feb 2024
59
62
HMMT Feb 2025
58
64
BRUMO 2025
60

Reasoning

Claude 3.5 Sonnet

Claude 3.5 Sonnet

62

Claude 3 Opus

58

63
SimpleQA
59
61
MuSR
57

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or Claude 3 Opus?

Claude 3.5 Sonnet scores higher overall with 55 vs 51, a difference of 4 points across all benchmarks.

Which is better for knowledge tasks, Claude 3.5 Sonnet or Claude 3 Opus?

Claude 3.5 Sonnet leads in knowledge tasks with an average score of 63.5 vs 59.5.

Which is better for coding, Claude 3.5 Sonnet or Claude 3 Opus?

Claude 3.5 Sonnet leads in coding with an average score of 57 vs 53.

Which is better for math, Claude 3.5 Sonnet or Claude 3 Opus?

Claude 3.5 Sonnet leads in math with an average score of 64 vs 60.

Which is better for reasoning, Claude 3.5 Sonnet or Claude 3 Opus?

Claude 3.5 Sonnet leads in reasoning with an average score of 62 vs 58.

Related Comparisons

Claude 3.5 Sonnet vs GPT-5.4Claude 3.5 Sonnet vs Gemini 3.1 ProClaude 3.5 Sonnet vs Claude Opus 4.6Claude 3.5 Sonnet vs GPT-5.3 CodexClaude 3.5 Sonnet vs Grok 4.1Claude 3.5 Sonnet vs GPT-5.2