The speaker says Opus 5 appears to use an AI judge to check its actions extensively, resulting in high token use.

“is just like too large and like i think people people made this point with opus is it's like the difference between opus forming six and opus five is that opus five really feels like it's got this like ai as a judge checking every possible thing it's done it's like that's why it uses so many tokens it like tries to think about all these things but it doesn't necessarily have the big model smell of fable to know when to like stop doing that or like when's a good path to go down order”