Runway's AI Generates Virtual Try-On Shopping UI

Runway calls its newest release Solaris, and it doesn't behave like an app. The company, known for AI video generation tools like Gen-4.5, is now applying that same frame-by-frame rendering approach to something else entirely: software interfaces. Instead of a screen built from code that stays fixed until a developer pushes an update, Solaris generates what you see live, at 720p, reacting to a click, a drag, or a spoken command in real time.

Runway is branding this a new category altogether, an "Interface World Model," positioning it as a break from decades of how operating systems and apps have worked. There's no static layout sitting behind the scenes waiting to be triggered. The interface exists only in the moment a user interacts with it, then regenerates based on what they do next.

Runway has floated a handful of early use cases, from retail to product design, hinting at software that reshapes itself around each person rather than asking each person to learn a fixed set of menus and buttons. Whether that idea holds up outside a demo is a separate question, one the company's own limitations list starts to answer.