token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
Why it matters
Opus 4.7's list price is unchanged but the same prompt bills more tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition →. Expect roughly 12 to 27 percent higher spend on agentic coding work, with short prompts the exception that got cheaper.
