A fair comparison might be average human. The average human isn't a STEM grad. It seems STEM grad approximately equals an IQ of 130. https://www.accommodationforstudents.com/student-blog/the-su...

From a post elsewhere the scores on ARC-AGI-PUB are approx average human 64%, o3 87%. https://news.ycombinator.com/item?id=42474659

Though also elsewhere, o3 seems very expensive to operate. You could probably hire a PhD researcher for cheaper.