GPT-6 Astra is amazing for motion design, especially when you're presenting a UI or an app. I asked it to create a Codex promo using PerspectiveUI from my ThreeUI library. Then I kept refining it: a midnight-blue nebula, stars forming a 6, progressive blur, 3D camera moves, close-ups of typing, and text particles. I finished by cutting it to 30 seconds, six distinct scenes, and three prompts from our conversation. Live site: http://motion.mengto.here.now