Runway's Solaris generates an app interface frame by frame, with no code
Runway introduced Solaris on August 31, 2026, the first of what it calls Interface World Models. A single world model generates every frame of an application interface at 720p and interactive speeds, while a language model decides how the interface evolves in response to the user. In a 250-person study of 30 interactions, participants preferred Solaris over coded interfaces 61% to 24% on following instructions and 71% to 21% on natural behavior. It is available by early-access request only.