So far the improvements in writing have not been as substantial as those in math or coding (not even close, really). Is there something fundamentally “easier” for LLMs about those two fields?
Much more formal structure and generally code can be tested for correctness. Prose doesn't have that benefit. That said, given the right prompt and LLM, you can squeeze out surprisingly good stuff: https://bsky.app/profile/talyarkoni.com/post/3ldfjm37u2s2x