X-ray house demo showing pipes, wires, ducts, and repairs

Opus 5.5 built a fun little demo that x-rays a make-believe house with pipes, wires, ducts and all. It finds four mistakes and fixes them before anything is built. Now picture an actual expert builder making a tool like it their own. 🔧 https://t.co/Vf0AODGdxF

— Dan Fein (@dfeinition) Sep 23, 2026