I do not understand what possible motivation there could be for generating "creative writing" unless you enjoy reading meaningless stories yourself, in which case, be my guest.
They can’t generate a simple haiku consistently, something larger is more out of reach.
For example, give it a piece of poetry and ask for new verses and it just sucks at replicating the language structure and rhythm of original verses.
Maybe it was less lobotomized, or less covered in the prompt equivalent of red tape. Or maybe you just need to have a little bit of lunacy for fun creative writing. The new models are so much more useful, but IMO they don’t have even come close to GPT-3.
In what way? I find the opposite, 4o's output has a very strong AI vibe, much moreso than competitors like Claude and Gemini. You can immediately tell, and instructing it to write differently (except for obvious caricatures like "Write like Gen Z") doesn't seem to help.