benchlm.ai

Claude 3.5 Sonnet vs GPT-5 mini

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

Quick Verdict

GPT-5 mini wins overall with a score of 68 vs 55 (13 point difference).GPT-5 mini wins 4 out of 4 categories.

Claude 3.5 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score55

GPT-5 mini

CreatorOpenAI
TypeProprietary
Context128K
Score68

Knowledge

GPT-5 mini

Claude 3.5 Sonnet

63.5

GPT-5 mini

85

65
MMLU
88
65
GPQA
86
63
SuperGPQA
84
61
OpenBookQA
82

Coding

GPT-5 mini

Claude 3.5 Sonnet

57

GPT-5 mini

80

57
HumanEval
80

Mathematics

GPT-5 mini

Claude 3.5 Sonnet

64

GPT-5 mini

89

65
AIME 2023
90
67
AIME 2024
92
66
AIME 2025
91
61
HMMT Feb 2023
86
63
HMMT Feb 2024
88
62
HMMT Feb 2025
87
64
BRUMO 2025
89

Reasoning

GPT-5 mini

Claude 3.5 Sonnet

62

GPT-5 mini

83

63
SimpleQA
84
61
MuSR
82

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or GPT-5 mini?

GPT-5 mini scores higher overall with 68 vs 55, a difference of 13 points across all benchmarks.

Which is better for knowledge tasks, Claude 3.5 Sonnet or GPT-5 mini?

GPT-5 mini leads in knowledge tasks with an average score of 85 vs 63.5.

Which is better for coding, Claude 3.5 Sonnet or GPT-5 mini?

GPT-5 mini leads in coding with an average score of 80 vs 57.

Which is better for math, Claude 3.5 Sonnet or GPT-5 mini?

GPT-5 mini leads in math with an average score of 89 vs 64.

Which is better for reasoning, Claude 3.5 Sonnet or GPT-5 mini?

GPT-5 mini leads in reasoning with an average score of 83 vs 62.

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