I’m curious about how to verify that these bots respect the rules. I don’t doubt that they do, since it might be a PR nightmare for these big tech companies if they don’t, but I don’t know how to verify them. Asking because I’m also doing this for my website.
By the way, LLMs are usually also trained by common crawl, (not sure to what extent), but I’m not sure whether you want to block common crawl.
Another thing to consider is whether your website is indexed and crawled by web archive, and whether web archive has some policy on AI bot crawlers and scrapers.