In investing, a benchmark is usually an index or fund against which an investor can compare the performance of their own portfolio. When it comes to investing, gains are good, and losses are bad.

Researchers used questions from the NPR Sunday Puzzle challenge to build a benchmark to test AI 'reasoning' models.

For example, a software company striving to attain the fastest growth in its industry may consider year-over-year (YOY) revenue growth as its chief performance indicator. Conversely, a retail ...