The "my boyfriend is AI" subreddit.

A lot of people are lonely and talking to these things like a significant other. They value roleplay instruction following that creates "immersion." They tell it to be dark and mysterious and call itself a pet name. GPT-4o was apparently their favorite because it was very "steerable." Then it broke the news that people were doing this, some of them falling off the deep end with it, so they had to tone back the steerability a bit with 5, and these users seem to say 5 breaks immersion with more safeguards.