benchlm.ai

Claude 3 Opus vs GPT-5 (medium)

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

Quick Verdict

GPT-5 (medium) wins overall with a score of 70 vs 51 (19 point difference).GPT-5 (medium) wins 4 out of 4 categories.

Claude 3 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score51

GPT-5 (medium)

CreatorOpenAI
TypeProprietary
Context128K
Score70

Knowledge

GPT-5 (medium)

Claude 3 Opus

59.5

GPT-5 (medium)

88

61
MMLU
91
61
GPQA
89
59
SuperGPQA
87
57
OpenBookQA
85

Coding

GPT-5 (medium)

Claude 3 Opus

53

GPT-5 (medium)

83

53
HumanEval
83

Mathematics

GPT-5 (medium)

Claude 3 Opus

60

GPT-5 (medium)

92

61
AIME 2023
93
63
AIME 2024
95
62
AIME 2025
94
57
HMMT Feb 2023
89
59
HMMT Feb 2024
91
58
HMMT Feb 2025
90
60
BRUMO 2025
92

Reasoning

GPT-5 (medium)

Claude 3 Opus

58

GPT-5 (medium)

86

59
SimpleQA
87
57
MuSR
85

Frequently Asked Questions

Which is better, Claude 3 Opus or GPT-5 (medium)?

GPT-5 (medium) scores higher overall with 70 vs 51, a difference of 19 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or GPT-5 (medium)?

GPT-5 (medium) leads in knowledge tasks with an average score of 88 vs 59.5.

Which is better for coding, Claude 3 Opus or GPT-5 (medium)?

GPT-5 (medium) leads in coding with an average score of 83 vs 53.

Which is better for math, Claude 3 Opus or GPT-5 (medium)?

GPT-5 (medium) leads in math with an average score of 92 vs 60.

Which is better for reasoning, Claude 3 Opus or GPT-5 (medium)?

GPT-5 (medium) leads in reasoning with an average score of 86 vs 58.

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