Discussion (266 points, 1 day ago, 103 comments) https://news.ycombinator.com/item?id=41873204

How are they detecting that the image is AI-generated, I wonder?

Feed the image to AI with a prompt of "this u bro?"

In all seriousness, I expect the implementation isn't too far from that. Some engine or another trained on a ton of known AI generated output.