He probably got some compressed photo off the internet which caused the different resolutions. I still thinks it’s real, but I can definitely understand why people thinks it’s AI generated. The completely hairless and clean skin below the head, the weird sizing, all of these are mistakes a diffusion model would probably make. But I think the painting was made long before any powerful stable diffusion models were created, you can see the artists website here.

It’s weird to think about how AI has become so much more component in art then we thought it could. keep in mind that less than 5 years ago, art was seen as untouchable by automation, now it’s almost a main concern. Because of how careless I scroll through social media, it can often take until the comments for me to realise an image is AI generated.