GPT Pilot is an AI development tool that can write extensible applications from scratch under developer supervision. You specify the type of application you want to build, and GPT Pilot will ask clarifying questions, create product and technical requirements, set up the development environment, and step-by-step write the application, just like a real developer would. At the completion of each task, it will ask you for review or help if it encounters problems. This way, GPT Pilot acts like a developer, while you are a senior developer who leads the development, reviews the code, and provides assistance when needed.