BuildThatIdea is a no-code platform that empowers users to create, deploy, and monetize custom AI applications, referred to as GPT wrappers, in under 60 seconds. Users can define their AI app's name, description, and behavior, choose from various base large language models like OpenAI, Claude, DeepSeek, or Tulu, and upload a knowledge base to customize the AI's role, tone, and style. It handles all necessary integrations, allowing for one-click deployment and monetization through subscription or pay-per-use models. BuildThatIdea offers a range of pre-built AI agents, including YC GPT for startup founders, GRE Tutor for test preparation, and AstroChat for personal astrology readings. It also provides resources like a customizable GPT wrapper template and a collection of 100+ AI app ideas to inspire users. It caters to creators, indie hackers, and businesses, enabling them to turn their expertise into AI-powered products without any coding required.