AI 101
Token

A token is a small chunk of text, like a word, part of a word or a punctuation mark, that a model reads and writes.
Think of it like this: Tokens are the fuel: usage is measured and billed by how many get used. In English, one token is roughly three quarters of a word.
Source:
- https://developers.openai.com/api/docs/concepts (checked Oct 15, 2026)
- https://developers.google.com/machine-learning/glossary#token (checked Oct 15, 2026)
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