Character.Ai Character.AI, also known as c.ai, is a neural language model chatbot service that can generate human-like text responses and participate in contextual conversations. It is designed to create, interact with, and share AI chatbot characters. Character.AI focuses on neural language models, useful tools for imagination, brainstorming, language learning, and a host of other purposes. It offers applications spanning entertainment, education, general question-answering, and others.