AIME (Benchmark)

In depth

The American Invitational Mathematics Examination, a 15-question high school math competition run by the Mathematical Association of America that AI labs use as a math reasoning benchmark. Every answer is an integer from 0 to 999, so grading is exact match and needs no judge model. Labs report results on a specific year's exam, such as AIME 2025, because a newer exam is less likely to be in training data. With only 15 questions, one problem moves the score by almost 7 points, so small gaps between models are noise.

Primary source: maa.org