Implausible design/architecture and scale. I don’t believe anyone would go in so much lengths to build this so cleanly in this style just for few likes on a shitpost (although, I admit some people are crazy committed) Prompting an AI is easier and cheaper. So, most likely AI slop.

For me it’s a bit too perfect. A human could definitely have achieved the same result, but I’m not sure someone who would spend this much time perfecting an image like that would add the glow on the floor that seemingly comes from nowhere with no purpose. I agree with you, detecting AI slop is becoming extremely hard for me. Sometimes, like in this example, you can ask for what purpose something was done. Why is the underglow in there, and where does the light come from? A human staring at this image for at least a handful of hours would have made decisions about it, someone generating the image wouldn’t really think about it and just go “eh looks cool”.