An AI Chatbot is a computer program designed to simulate human conversation through text or voice commands. Powered by Natural Language Processing (NLP) and Large Language Models (LLMs), chatbots can understand user intent and provide relevant information or perform tasks. They are used in customer service, information acquisition, and personal assistance. Modern AI chatbots can handle complex queries, maintain context over a conversation, and learn from interactions to improve their responses, making them an integral part of the digital experience.