Comment by semiquaver

But it doesn’t cost scrapers millions of solved challenges to go to millions of webpages on a single origin. Once you solve an Anubis challenge you get a signed JWT that lets you scrape a given site an unlimited amount for a configurable amount of time. (~day). So in practice it doesn’t actually cost the scrapers a large amount amount in proportion to their usage. It actually costs them proportionally less than a normal human.

To actually make it expensive for scrapers every page would need a new challenge. And that would not be tolerated by real human users. Or the challenge solution would need to be tied to a stateful reward that only entitles a human-level amount of subsequent request usage.