According to Heise Online, 70.000 questions were submitted, among which 3000 questions made it into the final dataset of questions from all scientific disciplines.
Beside a prize money of $500, the authors of the top-rated 550 questions are included as co-authors of the publication. As of today, no state-of-the-art LLM model is able to solve even 10% of the questions present in the dataset, the New York Times writes When A.I. Passes This Test, Look Out.
The only other contributor from RUB is Prof. Alexander Ivanov, congratulations!