Yes I can confirm that's approx what I paid. My first time using claude 4 opus and I used aider. It seems the estimation aider gives is very wrong as it was telling me I used approx 15$. I only noticed because my credit ran out. The $/performance tells me I should check what grok4 can do. I didn't use it seriously yet.

Claude Opus 4 is 5x the price of Claude Sonnet 4. I don't think it's 5x as good. I default to Sonnet and rarely use Opus - in this case Sonnet would have cost about $12.31 for the same volume of tokens.