OpenAI has quietly altered ChatGPT so that it now rejects direct requests to mimic named authors, blocking prompts that ask for writing 'in the style of' famous writers while still allowing users to generate original work using similar techniques, tones and structures.
A request that once produced a familiar creative experiment with ChatGPT now leads to a refusal. Ask the chatbot to write like Stephen King, J.K. Rowling or Ernest Hemingway, and it will no longer attempt to reproduce their distinctive voices. But the underlying ability to generate similar moods, structures and storytelling techniques remains available.