DeepMind unveils Genie 4, a real-time interactive 3D world model

Genie 4 simulates interactive 3D worlds with sound and talking characters in real time. Gemini models plan in the background to keep the simulation consistent. It is an early research model, and longer sessions show visual inconsistencies.

Why it matters: Pairing a world model with an LLM planner is a notable architecture for keeping long simulations coherent, which is the main weakness of earlier versions. World models like this are increasingly viewed as training grounds for agents and robots, not just game demos.