They aren't reporting anything yet. What we hearing is just from news media who get their leaks/info from investors who get some form of IR reports/ presentation.

The $19b ARR and $6b added in Feb came directly from Anthropic CEO recently.

Until they’re using consistent methods of reporting those figures, they’re not comparable. Same as any other company pre vs post IPO

I am reminded of the "I declare bankruptcy" meme from the 2000's TV series Office.

When we say reporting it means there are statutory submissions with an auditor signing off, with legal liability. As the other reply referenced consequences for doing this incorrectly can be severe - Arthur Anderson is no more after all because of Enron.

A Press Release (of a private entity) does not have to satisfy this high bar.

Press release does mean no constraints, for public companies, disclosure of important information by officers and other insiders have strong controls. Even if its the just a rocket/poop emoji on a casual social media platform. Lawyers have to refile with the SEC in the expected format. Even private companies have restrictions on not claiming things fraudulently to investors, but these are accredited investors with lesser controls than retail.

Announcing isn't reporting. Am I the only one old enough to remember Enron?