Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-5 mini wins overall with a score of 68 vs 67 (1 point difference).GPT-5 mini wins 2 out of 4 categories.
GPT-5 mini
85
o3
85.3
GPT-5 mini
80
o3
78
GPT-5 mini
89
o3
87
GPT-5 mini
83
o3
83
GPT-5 mini scores higher overall with 68 vs 67, a difference of 1 points across all benchmarks.
o3 leads in knowledge tasks with an average score of 85.3 vs 85.
GPT-5 mini leads in coding with an average score of 80 vs 78.
GPT-5 mini leads in math with an average score of 89 vs 87.
GPT-5 mini and o3 are tied for reasoning with average scores of 83.