the only feasible CAPTCHA at this moment is probably hCaptcha. they began to offer animated challenges. it's probably the best you can do, using an LLM to solve them would be a bit expensive for now.
As the article mentions: Anubis blocked virtually all bots for a couple of months, and even now it is still blocking 67% of requests. Without Anubis they'd have to double the number of CPU cores, solely to serve crawler traffic!
It's an arms race. The best solution is the one you can plug in right now - even if it is stupid. hCaptcha might have a better blocking rate at the moment, but it's also $0.99/1K evals, and that "animated challenge" will be impossible to solve for visually-impaired users: for many people that cost is significantly higher than spinning up an extra server or two to feed the crawlers.