Runway, an AI company, announced on Monday the release of a new model named Solaris. ^[1] Solaris is an interface world model that allows users to create interactive websites and digital environments without requiring hard programming knowledge. ^[2] Researchers introduced Solaris, an interface world model that generates an interactive user interface directly, frame by frame, in response to user actions. ^[3] The Solaris model works by combining reasoning and rendering, where the model generates the interface frame by frame while a language model determines how the interface evolves. ^[4] Users can interact with the generated digital environments by clicking on or dragging elements, which the model treats as conditioning signals to generate additional frames in real-time. ^[5] Solaris treats mouse interactions as conditioning signals and autoregressively synthesizes the resulting visual state at interactive speeds. ^[6] The system combines autoregressive frame generation with few-step distillation and training on the model's own outputs to enable real-time generation while maintaining visual coherence. ^[7] Runway's Solaris does not write the interface but generates the next frame after every click, according to the article. ^[8] The paper identifies interface world models as a step toward a new paradigm for software where interfaces are generated and adapted continuously around user intent. ^[9]