GPT-6 Astra is reportedly live on OnSolo with whitebox scene previews

A user says GPT-6 Astra is live on OnSolo and can reason through space and motion from a scene description. They describe the Whitebox Video Expert producing a whitebox pass—a preliminary scene preview—before the final render. The appeal, in their view, is checking scene layout, object placement and camera movement while changes are still cheap, rather than expecting a better model to fix a badly planned scene.