Google DeepMind just unveiled Genie 4, its next-generation AI world model, and the demos are pretty impressive. Unlike a typical AI-generated video, Genie 4 creates interactive environments you can explore and modify in real time. You can change the weather, introduce objects or characters, and interact with people who move, react, and speak. It also generates native audio, including ambient sounds and dialogue, while simulating physics and collisions. Built on Gemini Omni, it uses Gemini's reasoning capabilities to maintain continuity and simulate multi-step events, with potential applications in robotics training, gaming, and filmmaking. Genie 4 is currently available to trusted testers, with access coming to Google AI Ultra subscribers through Project Genie and select API partners.