Opus 5.5 and GPT-6 Astra each build a 3D medieval castle
Both models coded castles in Three.js with moats, banners, patrolling guards and working drawbridges, and the post compares their API costs.
OPUS AND ASTRA BUILT THEIR OWN CASTLES. WHO DID IT BETTER? I asked Claude Opus 5.5 and ChatGPT-6 Astra to create their own medieval castles: choose the architecture, design a coat of arms, and fly their own banners Opus built an entire kingdom: red rooftops, a moat, a village, and surrounding mountains. Astra went with a pale stone island citadel, emerald banners, and an eight-pointed star Both castles are built with code using Three.js + WebGL: procedural geometry, waving banners, patrolling guards, working drawbridges, and changing lighting. Everything is interactive and runs right in your browser Opus on the left - $11.15. Astra on the right - an estimated $7.07 at API rates, including revisions Which kingdom would you live in? 👇
This post quotes another post: “Opus 5.5 and Astra compared on interactive gummy candy in the browser”