FullStack React Startup is a GPT built on the ChatGPT platform. Its primary purpose is to provide assistance in building full stack applications using React. This GPT has been designed to guide users through an interactive process, offering valuable insights into different nuances of full stack development with React. Key topics of guidance include initiating a React project setup, configuring backend with Node.js, integrating Express with React, and creating a landing page in React. The user can make specific requests such as starting a new React project, and the GPT will walk them through the initial setup. FullStack React Startup essentially acts as an interactive companion for developers looking to build comprehensive full stack solutions leveraging React. Users must have ChatGPT Plus to use the FullStack React Startup GPT.