Claude 3 Opus vs o3-pro

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

Quick Verdict

o3-pro wins overall with a score of 68 vs 51 (17 point difference).o3-pro wins 4 out of 4 categories.

Knowledge

o3-pro

Claude 3 Opus

59.5

o3-pro

87.3

61
MMLU
88
61
GPQA
89
59
SuperGPQA
87
57
OpenBookQA
85

Coding

o3-pro

Claude 3 Opus

53

o3-pro

80

53
HumanEval
80

Mathematics

o3-pro

Claude 3 Opus

60

o3-pro

89

61
AIME 2023
90
63
AIME 2024
92
62
AIME 2025
91
57
HMMT Feb 2023
86
59
HMMT Feb 2024
88
58
HMMT Feb 2025
87
60
BRUMO 2025
89

Reasoning

o3-pro

Claude 3 Opus

58

o3-pro

85

59
SimpleQA
86
57
MuSR
84

Frequently Asked Questions

Which is better, Claude 3 Opus or o3-pro?

o3-pro scores higher overall with 68 vs 51, a difference of 17 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or o3-pro?

o3-pro leads in knowledge tasks with an average score of 87.3 vs 59.5.

Which is better for coding, Claude 3 Opus or o3-pro?

o3-pro leads in coding with an average score of 80 vs 53.

Which is better for math, Claude 3 Opus or o3-pro?

o3-pro leads in math with an average score of 89 vs 60.

Which is better for reasoning, Claude 3 Opus or o3-pro?

o3-pro leads in reasoning with an average score of 85 vs 58.