Opus 5.5 builds a physics jelly cube in Three.js
For about $14.54 in API cost, Opus 5.5 built a browser jelly cube you can grab, stretch, throw and squash, with a built-in recorder that captured the clip.
I asked Claude Opus 5.5 to build a jelly cube with real physics in Three.js. One object on a plain lavender background. Everything runs in the browser. - Claude Opus 5.5 | $14.54 Costs are estimated API prices. You can grab any point and it stretches toward the cursor. Throw it and it tumbles over its edges, then squashes on the face that hits the floor. Roots and pebbles sit inside the translucent jelly. The first version was a glowing cup that teleported every time I grabbed it. Opus moved the physics to a real engine and the jumps were gone. It also built a video recorder into the page. This clip was recorded on the site itself.