Wan-Streamer: Treating Video as World + Event Stream

bronzeagepapi · x · 2026-07-18

Alibaba's Wan team has introduced Wan-Streamer v0.3, which conceptualizes video uniformly as a "World + Event Stream".

With this definition, the model treats "predicting how the world moves, changes, and responds in real-time given the world and inputs" as a general pre-training task. The paper highlights its focus on real-time full-duplex audio-visual interaction, treating the event stream as the agent's language, behavior, and action output to achieve low-latency synchronized generation. Reported metrics include 640×368 resolution, 25 FPS, a 160ms streaming unit, 200ms model-side response latency, and 550ms total interaction latency (under a 350ms bidirectional network budget).

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