The original concept of AI i.e a robot brain as or of greater intelligence than person is still a long way off. However in certain limited applications we already have AI. The google search engine for example
about 15 years ago I did a degree level course about AI. There were only really two things I remember about it:
* Strong AI is about ten years away
* Strong AI will never happen, because whenever you get close to it, people will dismiss it as algorithms and brute force, not intelligence.
Anything much short of Star Trek's Data isn't Strong AI (IMO). Google self driving cars are very clever, but they aren't AI. It'll weave its way through time square, but stick it in the middle of a cattle ranch or on the moon and it won't know what the hell to do, even though it's still basically the same job.
Biting the hand that feeds IT
