Gpt-4 is a far better poet than gpt-3. It isn’t world-class and may be missing some ineffable poetic soul, but its attempts are definitely notable and interesting. They seem mostly better than what I could write with significant effort.

Oh and I should emphasize that the quality and specificity of the prompt has a huge effect on the output.

I agree that gpt-3 was pretty trash at poetry, at least compared to human standards. It was impressive for AI, obviously.