Talking avatars' tell has moved: jaw and expression coherence, not lip sync

admrys · reddit · 2026-08-18

A creator working with DomoAI talking avatars notes that lip sync is no longer the first thing that breaks immersion. What to watch instead is everything around the mouth: whether the jaw still fits the face, whether cheeks get oddly more expressive than the rest of the character, and whether the smile still belongs to the same face.

For close-ups, they'd take slightly simpler mouth movement over a perfectly articulated mouth that pulls the rest of the face somewhere weird — though the balance is narrow, as too little motion looks stiff and too much draws attention to the animation itself. A telling signal that evaluation criteria for AI talking avatars are shifting from "are the lips aligned" to whole-face consistency.

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