Opus 4.6 tops the Intelligence Index but cost $2,486 to run, more than GPT-5.2 xhigh, at unchanged pricing. The new adaptive thinking and effort controls replace thinking budgets.
Terms in this piece · Glossary
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.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
