According to Jasper Zhang, OpenAI did not officially participate in the IMO; it tested its model on IMO problems and asked three former IMO medalists to review the results.

“Why did mine need to verify but then OpenAI didn't need to do that they can just release and then it turns out like OpenAI actually didn't involve officially with IMO they just like use the problems but and then just like use their model to test.”

“The results and it asked like three previous IMO medalists to review them.”