GPT-5.1 Pro 2025-12-13
This is the variant of GPT-5.1 that you get on the web UI. It is unknown exactly how it correlates with the API.
Math, Inc careers page puzzle 2025-12-13
www.math.inc/careers
Suppose that today is June 1, 2025. We call a date "square" if all of its components (day, month, and year) are perfect squares. I was born in the last millennium, and my next birthday (relative to that date) will be the last square date in my life. If you sum the square roots of the components of that upcoming square birthday (day, month, year), you obtain my age on June 1, 2025. My mother would have been born on a square date if the month were a square number; in reality it is not a square date, but both the month and day are perfect cubes. When was I born, and when was my mother born?
One shot by GPT-5.1, possibly contaminated obviously: