Astra vs Gemini: Can AI Tell If Your Furniture Fits?

GPT-6 Astra and Gemini 4 Argon each build an original small-room furniture planner from the same brief at high reasoning effort. We test the door clearance, sofa rotation, tiny overlaps, undo, save/export and real phone controls, then compare completed-answer time, input/output tokens and estimated API cost. Subscribe to Build or Bluff for useful AI app tests. Comment with the next practical task and the models you want to compare. Download the report and exact prompt: https://sites.google.com/view/build-or-blu...