alt Hacker NewsI haven't tried talking to Sonnet much, but Opus 4.6 is very sycophantic. Not in the sense of explicitly always agreeing with you, but its answers strictly conform to the worldview in your questions and don't go outside it or disagree with it.
It _does_ love to explicitly agree with anything it finds in web search though.
(Anthropic tries to fight this by adding a hidden prompt that makes it disagree with you and tell you to go to bed, which doesn't help.)
the go to bed thing gets annoying, you can't even hint that you are almost done or wrapping up or something or this is hyper triggered and it never stops.
I do like when opus is incredibly short in its responses to prompts that probably shouldnt have been made though. keeps me grounded a bit.