The Sequence AI of the Week #757: 3D World Models in Action: Inside DeepMind’s SIMA 2 Architecture
An agent that can generate interactive 3D environments.
World models are becoming a reality in front of our eyes! Today, we would like to dive into one of the most exciting ones.
DeepMind’s SIMA 2 is best understood as a systems project disguised as a gaming demo: it is a full-stack embodied agent that wraps a Gemini model in a visuomotor control loop, trains it across many 3D games, and then lets it improve itself through model-driven task generation and self-play. Rather than proposing a new neural building block in isolation, SIMA 2 offers a reference architecture for how a large multimodal model can perceive, reason, and act in complex simulated worlds using exactly the same interface as a human player.