In this post, Simon Willison discusses his experimentation with Claude Opus 5.5 for 3D modeling using Vanilla JS and WebGL, comparing it to a previous project done in Three.js. He reflects on the differences between the two, asserting that Claude is capable of creating similar 3D models, although he finds Three.js slightly easier to understand. The discussion resonates well with Hacker News audiences, especially regarding advancements in AI and generative tools for developers.