[everdrive]

>And as a counterexample: some captchas require you to compute something expensive to prove you're not a llm scraper or whatever.

I've never run into one of these. What do they ask you to compute?

[gus_massa]

For example: https://anubis.techaro.lol/

Wikipedia has a good explanation: https://en.wikipedia.org/wiki/Anubis_(software)#Design