1) ChatGPT is an AI conversational agent developed by OpenAI that can understand questions and respond in a human-like manner across a wide range of topics. 2) It works using a deep learning technique called a transformer that processes input text and generates responses through encoding and decoding layers with self-attention. 3) Some potential uses of ChatGPT include building chatbots for customer support, creating content, developing personal assistants, enabling language translation, and aiding education and research.