Spatia is a video generator that keeps a live 3D map of the scene (a point cloud) as its memory while making videos.
Steer3D lets you change a 3D object just by typing what you want, like “add a roof rack,” and it does it in one quick pass.
LongVie 2 is a video world model that can generate controllable videos for 3–5 minutes while keeping the look and motion steady over time.