I too would love a captcha solver extension for Firefox. Those things are getting annoying.

Are you sing Tor or a VPN? Sharing the same IP with thousands of other people is something that would lead to getting captchas every time you visit a site. Most sites use Cloudflare or other CDNs, and they see the same IP making tons of requests every second, so they flag it as a potential bot IP and issue the captcha challenge.

Weird, I use the same and rarely see them

Which is why they're so good at captchas. Letters and numbers are the objects they're trained to recognize here.

Yeah whoever wrote the title really misunderstands ai.

I'm also not sure if using AI for something like this is cost effective.

That was definitely not the original point of the captcha. It used to be every site implementing their own version, some better than others, but all were just solving something that should be easy for humans and almost impossible for bots. But then Google got the idea of using it for crowdsourcing to help with digitizing books and they launched reCAPTCHA. This was easy to embed on any web page and served a noble purpose, so it quickly became the de facto captcha over much of the web. Fast forward several years and now we're all providing free work in training AI object recognition, a problem AI is already very good at, which means the images we're being given are increasingly more difficult for humans to interpret.

Early forms of captcha were helping to transcribe books.

It's silly, because you can just cycle between captchas until you find one you can actually do

look down to hands maybe I am a robot after all

These days they should take your ability to complete a captcha as evidence that you are in fact a bot.