ChatCAD is an AI-powered app that allows users to create 3D objects by using their words. It functions like a chatbot but focuses on the creation of three-dimensional models. While the current version, ChatCAD Alpha, is no longer available, the developer is working on a new version called Text-to-3D that will be released soon. The tool garnered significant interest, with around 600 sign-ups and over 3,200 messages exchanged.