Fluffy Penguin · Soft-Body Interactive Model

Screen recording comparing Opus 5.5 with GPT-6 Astra on the same prompt: a single-file WebGPU material study page featuring an egg-shaped plush penguin chick standing on a table. Built with XPBD soft-body physics and brushable shell fur, it waddles, belly-slides, flaps its flippers, tumbles, and rights itself. Responds to finger pushes and hand manipulation. About 18 seconds. Perfect for 3D interaction demos and model comparison content.