Runway News | Introducing Solaris
Runway has unveiled Solaris, a model it describes as an Interface World Model - a system capable of generating interactive user interfaces in real time, one frame at a time, with no underlying code required. Rather than producing a finished image or a pre-rendered video, Solaris generates the visual state of an interface continuously as a user interacts with it, making the output responsive and dynamic by nature.
The distinction between a world model and a standard generative model is important here. World models are designed to simulate environments and predict how those environments change in response to actions. Applying that concept to software interfaces means Solaris is not simply drawing a picture of an app - it is modeling how an interface behaves, updating its output based on input in a way that resembles real interactive software. Runway positions this as a fundamentally different category from image or video generation.
This announcement fits into a broader trend of AI labs exploring world models as a path toward more capable, interactive AI systems. Where much of the earlier focus in generative AI was on producing media - photos, video, audio - work on world models targets simulation and agency. For Runway, a company that has built its reputation primarily on video generation tools, Solaris signals an expansion into territory that has practical implications for interface design, prototyping, and potentially the creation of software experiences without traditional development workflows.
Solaris appears to be at an early, research-oriented stage, and Runway has not announced a broad public release or detailed pricing. Still, the demonstration points toward a use case that many in the design and development space have been watching closely: the ability to sketch, iterate, or even deploy interactive experiences driven entirely by a generative model. How well Solaris handles complexity, consistency, and user control at scale will determine whether Interface World Models become a practical tool or remain a compelling proof of concept.
