It appears to be part of how it's trained. I believe this is part of the secret sauce of why it's so damn cheap. Have you tried custom instructions? Settings >

It appears to be part of how it's trained. I believe this is part of the secret sauce of why it's so damn cheap. Have you tried custom instructions? Settings > Custom Instructions > How would you like ChatGPT to respond? I can tweak the tone there, but its informal tone can be more cringe at times. The API models are a lot better at this than the web-based ChatGPT, but still problematic. Most of the time when tone matters (e.g. dialogue, banter, actual chat), I'll use the completion models (i.e. davinci-002). GPT can be extremely good at tone but many don't realize it because the completion models are marked as legacy.