update: it's server-side, not the app anthropic enrols fable 5 sessions on claude code 2.1.236+ into an experiment that shrinks the effort scale, older versions and opus 5 are left alone probably an a/b test, so not everyone will see it if "high" feels like "low" for you, you're in the test group holy fuck anthropic, you guys are unbearable sometimes
if fable felt dumber this week, it's not you ❗❗❗ since 2.1.237 the model reads "high" effort as 10 out of 100, the exact number "low" used to be and the changelog doesn't say a word i spent my whole afternoon convinced t3 code and my own app were broken before i went