Emo can anticipate and mirror human facial expressions, including smiles, within 840 milliseconds.

Columbia University's (@Columbia) Creative Machines Lab has developed a humanoid robot head named Emo, capable of simulating facial expressions with impressive timing.

Emo can anticipate and mirror human facial expressions, including smiles, within 840 milliseconds.
https://twitter.com/hadi__co/status/1773766443575730574?t=aXlmH_OMjA5QRnM7bca-_A&s=19