Update from Thariq on twitter. https://x.com/trq212/status/2091247114869432543

"We sometimes test API serving configs in Claude Code before rolling them out, and one running now maps the numerical effort value differently. That's why Claude may tell some of you it's at "10" on high. The scale isn't 0-100, the number isn't meaningful on its own, and the effort you selected is the effort you're getting. We've run in-depth evals to confirm this doesn't affect model performance. This should be the same experience, but if you see a clear regression please hit /feedback and send me the ID. Will give credits."

This should be the top post. The original tweet went viral because people loooove bashing Anthropic. It gets engagement (as shown here).