Runway has unveiled Solaris, an AI that generates app interfaces in real time instead of running code.
It can render interfaces in 720p and respond to clicks, drags, or voice.
Runway says the "app" as a fixed unit could disappear.
What happened
AI company Runway has unveiled Solaris, the first model in a new category it calls "Interface World Models." Instead of running code, the system generates the user interface frame by frame as you interact with it, rendering the interface in 720p and responding to clicks, drags, or voice commands.
Why it matters
This is a break from how software normally works, where the operating system decides what happens on screen and an app stays the same until someone ships an update. Runway's bigger claim is that the "app" as a fixed unit will disappear, as an operating system could generate the right interfaces on its own, reducing the need for a fixed catalog of apps.
What to watch
Runway sees Solaris as a training ground for AI agents, which still fail at tasks like hotel bookings because they are trained on fixed layouts and can't handle websites that deviate from them. For now, this is still a long way off, as stable, readable text remains a hard problem, and the company is looking for partners for a launch, offering early access through a form.
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Solaris builds on Runway's video model Gen-4.5 and follows the path the company started with GWM-1. A language model decides how the interface changes, while the world model renders each frame. This positions Solaris as a continuation of Runway's work in generative video, applying it to the task of creating interactive interfaces rather than just moving images.
Runway's broader vision is that the "app" as a fixed unit will disappear. Today, getting something done means opening the right prebuilt app, one for shopping, one for messages, one for reservations. If an operating system can generate the right interfaces on its own, there's less reason to sort software into a fixed catalog of apps. An online store would then no longer be a fixed layout that everyone sees the same way, but a generated environment that adapts to each user. Whether people actually want interfaces that keep changing is a question Runway leaves open, and for now, stable, readable text remains a hard problem, along with long sessions and reliability. A generated interface also has to work with assistive tech like screen readers, making it a research effort for now.
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