Viggle releases JST-2, a 3D world model that generates characters and scenes

AIViggle releases JST-2, a world foundation model that outputs 3D characters moving within generated environments rather than video. The model combines character, motion, and scene generation in one system: users upload a photo to create a character, describe or upload a reference video for motion, and generate the surrounding world from text or a photo. The model builds the stack in 3D rather than pixel or video space, and generates a 3D scene in seconds.