Viggle has released JST 2, a world model that builds 3D characters, motion and scenes out of Gaussian splats.
Viggle's earlier model, JST-1, arrived in 2024 as a video-3D foundation model with an understanding of physics, and it drove the character swap videos the company became known for. Those results were video. Viggle says JST 2 builds every character and scene from "persistent 3D atoms built on Gaussian splatting," so a result is generated once and can then be viewed from any angle without rerunning the model.
JST 2 runs inside PINOC, Viggle's web app, through Agent Mode, hand editors or an outside agent over MCP. Agent Mode takes a text description and generates the characters, motion and scene, or takes a video and extracts the scene and the moving character from it. Separate Scene, Character and Motion editors handle each piece by hand.
The Scene editor builds an environment from text, an image or a panorama, then places a character in it that can perform any motion and be walked with WASD. An Expand button fills in blurry or black patches so the scene holds together from every angle, and a Geometry-Guided Panorama skill turns a single scene image into a panorama to use as the source. The Character editor turns one line of text or a photo into a rigged 3D character, and the Motion editor produces animation from text or any video. Recently, I have tried creating both my own character and generating scenes from normal 2D photographs.
Claude Code, Cursor and other agents can connect to PINOC through an MCP server that signs in with Google and needs no API key. Viggle lists a character at 10 credits, or 6 with refinement off, and motion from text or video at 1 credit per second, with preset library clips free. Motions download as GLB or FBX for Unity, Blender and other tools, while characters, which are stored as .vsplat splats, render only through Viggle's free Splat Engine plugin for Unity or the web.
The public JST 2 gallery offers its scenes as walkable 3D views and downloadable clips, and includes a side by side comparison against World Labs' Marble, which exports its worlds as Gaussian splats.
JST 2 is available now in PINOC, with a free plan that includes 60 credits.
