This concise, practical course breaks down the “brain” behind AI tools—Large Language Models (LLMs)—and shows how they work in plain language. You will explore and compare the world’s top three everyday AI platforms: OpenAI’s ChatGPT, Anthropic’s Claude, and Google’s Gemini. By the end of this course, you will confidently navigate their interfaces, understand their distinct capabilities, and know exactly which tool and model to use to supercharge your daily productivity and creativity.