Solaris — Runway's Interface World Model

Runway announced Solaris, its first Interface World Model: "a new kind of operating system that generates interactive interfaces frame by frame, in real time, with no code." Solaris renders the interface directly rather than having an LLM write code. Click a button and the next frame is generated in response, the way a video model generates the next shot.

In a 250-person study Solaris beat Claude Opus 5-coded interfaces 61% to 24% on following instructions; legible text remains the hard part. Announced the same day fal.live turned a video model into a live broadcast, Solaris turns one into an operating system. The technology built to generate films is becoming a general real-time visual medium.