7 months, 240 generations: measuring how far an AI character's face actually drifted

No_Issue_8224 · reddit · 2026-09-03

A creator running a weekly AI picture story measured face drift across 240 generations of the same fictional character (Jan–Jul). Using 38 'anchor' images and 20 fresh generations from an untouched January prompt — all normalized to 500px pupil distance and compared pixel-wise in GIMP — they found: mouth width grew 11% (236→261px), hairline rose 29px, jaw narrowed 26px, while nose width stayed within their self-measured 8px noise floor. Most telling: the character's signature mole below the right eye, present in 214/240 historical images, appeared in only 6 of the 20 new ones — proving the drift is real and not a change in the author's taste. A rare longitudinal, quantitative look at character consistency in AI image generation.

Original post →

More from Multimodal

Multimodal channel →