Pay for the highest tier plan of Claude and ask it to make it look more like a human wrote it.

Real answer: Your university is being ridiculous. They should be using a digital proctoring service while you guys do your papers if they’re that serious about it. Detectors will never work. We aren’t allowed to make flat accusations of AI use, but a high result would make us look at the paper and see if there were any other irregularities or talk to the student to make sure that can explain the paper. It’s not a free chance to just toss the paper into a cheating bin.