Just found out about this Bartz v Anthropic settlement where a copyright lawsuit is being brought against Anthropic for using pirated books to train AI models.
Once, I had an essay published in an anthology, so I used the Authors Guild search tool to look for the book, and it's included in the list of books being included in the claim. (I don't think I can file a claim though, since I'm not listed as the author of the book, so I emailed the editors to let them know the info.)
Anyway the deadline to file a claim is March 30.