I decided to put this to the test.

What I would expect a human to reply:

"Um... OK?"

What Claude Sonnet 4.5 replied:

"Hi there! I understand you're planning to repeat the same sentence. I'm here whenever you'd like to have a conversation about something else or if you change your mind. Feel free to share whatever's on your mind!"

I don't think I've ever imagined a human saying "I understand you're planning to repeat the same sentence", if you thought this was some kind of killer rebuke, I don't think it worked out the way you imagined- do you actually think that's a human-sounding response? To me it's got that same telltale sycophancy of a robot butler that I've come to expect from these consumer grade LLMs.