Right. At Opus 4.6 rates, once you're at 700k context, each tool call costs ~$1 just for cache reads alone. 100 tool calls = $100+ before you even count outputs. 'Standard pricing' is doing a lot of work here lol

Cache reads don’t count as input tokens you pay for lol.

https://www.claudecodecamp.com/p/how-prompt-caching-actually...