Claude 3.5 Sonnet vs GPT-4o

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

Quick Verdict

GPT-4o wins overall with a score of 56 vs 55 (1 point difference).GPT-4o wins 4 out of 4 categories.

Knowledge

GPT-4o

Claude 3.5 Sonnet

63.5

GPT-4o

64.5

65
MMLU
66
65
GPQA
66
63
SuperGPQA
64
61
OpenBookQA
62

Coding

GPT-4o

Claude 3.5 Sonnet

57

GPT-4o

58

57
HumanEval
58

Mathematics

GPT-4o

Claude 3.5 Sonnet

64

GPT-4o

65

65
AIME 2023
66
67
AIME 2024
68
66
AIME 2025
67
61
HMMT Feb 2023
62
63
HMMT Feb 2024
64
62
HMMT Feb 2025
63
64
BRUMO 2025
65

Reasoning

GPT-4o

Claude 3.5 Sonnet

62

GPT-4o

63

63
SimpleQA
64
61
MuSR
62

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or GPT-4o?

GPT-4o scores higher overall with 56 vs 55, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, Claude 3.5 Sonnet or GPT-4o?

GPT-4o leads in knowledge tasks with an average score of 64.5 vs 63.5.

Which is better for coding, Claude 3.5 Sonnet or GPT-4o?

GPT-4o leads in coding with an average score of 58 vs 57.

Which is better for math, Claude 3.5 Sonnet or GPT-4o?

GPT-4o leads in math with an average score of 65 vs 64.

Which is better for reasoning, Claude 3.5 Sonnet or GPT-4o?

GPT-4o leads in reasoning with an average score of 63 vs 62.