Introducing Impeccable 4 *world builder* However many ways you ask, "be creative!!!" does nothing to an LLM. v4 cracks it, and greenfield work is where it shows. • a creative engine for greenfield and redesign: directions seeded and fused from hundreds of human-approved visual worlds • hyper-optimized for frontier models (GPT 5.6, Fable and class), on a core 58% smaller • far simpler to use: no command to learn, it works out the job itself (blank slate, redesign, added section, scoped refinement) • mobile app design, the #1# request, now in alpha: Apple HIG or Material 3 on top, audit and adapt running as VoiceOver and TalkBack passes • Grok Build and Mistral Vibe join the supported harnesses • plenty more