At this point how tf you even notice somthing is ai-generated?, like srsly i'm not even seeing anything that gives it away except that the guy that post it on twitter had the decency to tag it as ai art... me personaly i already uploaded ai-generated art here because i didn't even notice that it was and it scares me breaking rules even if i don't meant it.
Not going to deny it's certainly is harder, though as clean as this is there are definitely the AI generated oddities. The horn on the right for example morphs into a strand of hair and the gem on her hip bleeds into the metal around it. The pattern of her top is inconsistent between the left breast and right despite being a very simple pattern. On the right she actually has two sidelocks of hair instead of one like on the left side, with the the right side having that weird AI artifact of excessively generating frays in the hair. That also leads to that weird case of the outline of the character's arm on the right flying off and becoming a stray hair of the hairlock for some reason. Then there is the "veil" or remains of her original outfit's shoulder on the right side, if it's the veil then the blue line really should not be visible given how you'd have to very weirdly rest the veil so the outer side is visible but not block the view of it from how the veil should connect to the attire on her head and if it's the shoulder of her original outfit then that's just weird on its own, but either way it's a composition that a human artist would not have likely done if it was either her veil or a detached shoulder piece.