An AI Chatbot is a computer program designed using artificial intelligence technology that simulates human conversation and engages in natural language interaction. It understands user inputs (text or speech) and generates corresponding responses based on preset logic, algorithms, or learning models. AI chatbots are widely used in customer service, entertainment, education, business automation, and other fields. Common AI chatbots include ChatGPT, Claude, Gemini, Grok, Replika, Pi, and others, providing services such as companionship, knowledge answering, task automation, and more in various scenarios.