GPT-5 scores above 40% on Humanity’s Last Exam?

This market will resolve to "Yes" if the Humanity’s Last Exam leaderboard lists any version of GPT-5 with a score greater than 40.00% by October 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". The resolution source will be the official Humanity’s Last Exam leaderboard https://scale.com/leaderboard/humanitys_last_exam.