Google's Genie 4 adds native audio to its world model in research preview

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Google has announced Genie 4, a multimodal world model that generates sound alongside visuals, including ambient noise, music, and interactive dialogue. The company describes coherence in terms of short sessions rather than the two-minute figure widely reported from its briefing. Users can steer the simulation mid-run to alter weather, camera, or cast, with physics improvements claimed by the vendor. Access is limited to trusted testers for now, with Ultra subscribers to follow, and pricing has not been published. Early demos have drawn criticism over audio mismatches and drift in longer sequences.

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