I tried it once. Maybe 8-9 months back.I recall doing it soon after one travel, so that's why I can pinpoint it and this may be useful to figure which AI versions were available then.

The challenge is length and the context window. I had to own the plot since once it compacts, it has already lost the plot :)

I will give it pointers and tell where to go next. It will do it but either 1) stop after 3-4 paragraphs, or 2) write in a totally different direction than I expected. So I will nudge it to course correct, and it will do it. And then you keep iterating.

It was a good experiment for a couple of days. It saved me typing and it sometimes gave me lines of thinking that were interesting. But nothing that could be published.

But now that I think about it, I found a use case. If only GRRM could use its help :)