There’s a certain texture to AI images that gives it away. Everything is too smooth, too perfect.
CC
For now.
Give it 2 more years or so and it will be indistinguishable.
The perfect gradient on the shading of the blush [is that the right term - I’m a guy here not trying to understand makeup but uncover AI fraud] suggesting a mathematically perfect face contour with no blemishes or faults.