Since before LLMs were even an issue, there have been services that use overseas workers to solve them, with the going rate about $0.002 per captcha. (and they solve several different types)
>>bdcrav+(OP)
This is both true and misleading. It implies captchas aren’t effective due to these services. In practice, though, a good captcha cuts a ton of garbage traffic even though a motivated opponent can pay for circumvention.