Can code replace an image model? Twelve builds, six prompts
People say Anthropic is quietly testing a new Opus, and the proof being shared is animations, scenes and films drawn entirely by JavaScript. So the same six short prompts went to Claude Opus 5.5 (the model you can use today) and GPT-6.1 Sol: a human life in sixty seconds, a voxel castle, a short film, a 3D car showroom, a driving game and a music studio. One request each. Everything runs in your browser.
A whole life, drawn in code
The animation people are sharing for the rumoured Opus checkpoint: a human life from first heartbeat to old age, every frame drawn by JavaScript on one canvas, with a score synthesised in the browser.
Paper-cut figures with soft shadows, a heartbeat opening and eight chapters from the cradle to the armchair. No edits.
Warm paper background, hand-lettered captions and a chapter timeline under the scene. No edits.
A voxel castle school on a lake
Voxel-style, thousands of instanced blocks, a day and night cycle and a fly camera.
Towers, a great hall, a covered bridge, a harbour, fireflies and stars. Drag to look, WASD to fly. No edits.
An academy above the water: soft fog, a title card, warm windows at night. No edits.
A short film written in code
The Last Lighthouse: a storm, a sweeping beam, a boat fighting for the harbour, dawn. Sound is synthesised too.
A stylised 2D storm with rain, foam and a beam that lights the waves. One marked fix: the file shipped with a JavaScript error (a minus sign directly before an exponent) so nothing ran; we added the parentheses.
A low-poly 3D sea, a lit lighthouse, a boat with running lights and a dawn finale. No edits.
A 3D car showroom
An original electric crossover modelled entirely in code: paint, doors, lights, wheels, a night city.
A dark showroom with a turntable, paint swatches, doors you can open and a night-city backdrop. No edits.
A bright studio with a reflective floor, a boxy off-road take on the brief and the same controls. No edits.
A sunset coast drive
A stylised driving game with a convertible, traffic, a speedometer and engine sound.
A winding cliff road, an overtake counter and gears. One marked fix: a constant had the same name as the main loop function, which stopped the script; we renamed it.
A short, tight run along the sea wall with a big speedometer and a distance counter. No edits.
A music studio in the browser
A step sequencer, synths, drums, effects and a button that composes a song.
