Build a ChatGPT-like user interface using OpenAI GPT API responses directly in VS Code in this 15-minute tutorial. Learn to create the front-end using HTML, CSS, and JavaScript, and develop the back-end with Python and FastAPI. Follow along as the instructor demonstrates the entire process, from building the HTML structure to implementing the JavaScript functionality and setting up the FastAPI backend. Gain insights into separating HTML, CSS, and JavaScript files, understanding the GPT-3 API integration, and adding final aesthetic touches to enhance the user experience.