The cheap seats: Claude Haiku 5.5 vs GPT-6 Luna
Two small models with the same price per token: $0.10 in, $0.50 out per million. On launch day we gave Claude Haiku 5.5 and GPT-6 Luna the exact words Claude Opus 5.5 and GPT-6.1 Sol got on October 6, and the zombie-game prompt Claude Sonnet 5.5 got on September 29. One request each, nothing fixed by hand. Every version runs in your browser, side by side.
A voxel pagoda
A five-storey pagoda on a floating island, made of cubes, with a time-of-day slider.
Cherry trees dropping petals, a torii gate, a waterfall; at night the windows glow, fireflies and stars come out. The camera starts close. Effort medium. No edits.
Tidy and quick: torii, stone steps, a lantern, petals. Smaller and simpler than the others; the night is a calm blue. Effort medium. No edits.
From our Oct 6 test. No edits.
From our Oct 6 test. No edits.
A racing game
A neon hover-racing game with five AI rivals, three laps, boost pads and a minimap.
Bright neon city, glowing arches, boost meter, minimap and five rivals that really race. One flaw: the GO! sign never leaves the screen. Effort low (on medium it ran out of output mid-file). No edits.
A stylish title screen, and then nothing: the script declares a function called start twice, so the browser refuses to run the game at all. Effort medium. No edits.
From our Oct 6 test. No edits.
From our Oct 6 test. No edits.
A kitchen that works
A 3D kitchen where everything important works when you click it.
Warm light, pendant lamps, a fridge full of food. 27 parts have working animations, but most of them never receive the click: the fridge and the toaster answer, the kettle, tap and hob do not. Effort low (on medium it spent its whole output thinking). No edits.
19 clickable parts, and the clicks land: cabinets swing open, the kettle steams, the hob lights, the tap runs. Flatter light than the others. Effort medium. No edits.
From our Oct 6 test. No edits.
From our Oct 6 test. One edit (a duplicate name, marked in the source).
A card machine
An isometric SVG card terminal: swipe, PIN, approved, receipt, on a loop.
Card in, Processing, a tick, a receipt that curls out; keys press as the PIN is typed. Small on the page. Effort medium. No edits.
Clean and calm: Approved, a receipt, sound waves for the beep. Effort medium. No edits.
From our Oct 6 test. No edits.
From our Oct 6 test. No edits.
A zombie survival game
A round-based first-person zombie game in a boarded-up farmhouse: windows, points, a mystery crate, perks, an upgrade forge.
Zombies tear the boards off, you rebuild them, buy doors, perks, the mystery crate and the forge. But your first gun is never drawn on screen (it appears once the crate gives you a new one) and zombies walk into the camera. Effort low; it hit the 128k output limit and a second request finished the file. No edits. Press G for god mode.
A moody title and HUD, but the farmhouse is very dark, there is no gun model either and zombies stick to the camera. Effort medium. No edits. Press G for god mode.
From our Sep 29 test, same prompt: the reference for this one. No edits.
The exact prompts are for Ruocco Academy members. Every prompt word for word, with model, settings, time and cost, the full clean source of every demo as a ZIP, and step-by-step notes on how each video was made. The demos on this page are free to use for everyone.
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