I hear stories like this a lot (on here anyway) but I haven't seen any output that backs it up. Any day now I guess.
It's really interesting that I've only seen a few actual pieces of large-scale LLM output by people boasting about it, and most of them (e.g. the trash fire of a "web browser" by Anthropic) are bad.
Pretty sure people are trying to prompt chatgpt to write Brandon Sanderson-like stories and we'll see their successful prints anytime now.