#apro $AT A token is a small unit of data used in computing, security, and AI systems. In language models, a token represents pieces of text—like a word, part of a word, or even punctuation—that the model reads and understands. Models process text by breaking it into tokens to analyze meaning and generate responses. In cybersecurity, a token can be a digital key that verifies a user’s identity, helping keep accounts secure. Tokens also appear in blockchain, where they represent digital assets. Overall, tokens act as essential building blocks that help systems interpret, secure, or exchange information.