Meta 向美国所有用户开放 Muse AI 智能体实时视频通话

Meta just opened live video calls with its Muse AI agent to every US user. Callers see an animated avatar they can restyle as a person, animal or other character, and it reacts while listening. Muse Realtime Voice emits speech tokens carrying words and delivery, and Muse Realtime Avatar turns the same stream into lip-synced video. To run that live, Meta trained a student model to reproduce in 2 passes per video chunk what a teacher built in 120. the system streams 448x768 portrait video at 25 frames per second and starts replying about 870ms after a user stops talking. Adding 4-bit quantization, caching and dynamic batching lets a single Nvidia GB200 run 12 video streams at once. In company-run tests of 2- to 3-minute calls, raters preferred the avatar to Runway Characters 78% to 22% and HeyGen LiveAvatar 88% to 12%. At 12 streams per GB200, 1M simultaneous callers would need about 83K of them for video alone, so serving cost could cap the avatar’s reach.