I am because Claude has figured out I am a biochemist and therefore even asking Fable what the weather is gets me bumped back to Opus, sometimes even Opus 4.8 instead of 5. Kimi? GLM 5.3? DeepSeek? No such problem.
I can literally open a new chat with just "Hello" and it gets bumped.
I can literally open a new chat with just "Hello" and it gets bumped.