AI avatars shift from fidelity to interactivity race

AI video is shifting from a fidelity race to an interactivity race. Interactive avatar models are graded on three levels: Level 1 (talk), Level 2 (talk and listen), and Level 3 (talk, listen, and see). The jump to Level 2, where an avatar listens and reacts in real time, turns a talking face into a convincing conversational counterpart.