Google DeepMind has introduced the latest version of its AI world model, which according to the company “unlocks unprecedented realism” and specializes in simulating human beings.

Launched today as a limited research preview among a small group of early testers, the new model, called Genie 4, can generate photorealistic videos which users can modify in real-time via simple natural language prompts. Unlike its predecessor Genie 3 —which Google first unveiled in August of last year—the new model can also generate audio. And it can do so automatically, to fit whatever visual scene a user has crafted. “Every world carries the ambient sound of its own setting, from wind in the trees to waves crashing at the beach,” Google wrote in a blog post published Tuesday.…