2016's buzzword was "VR", 2017's buzzword is apparently "artificial intelligence"...
There is no such thing as Ai. It's just machine learning and it has been used for quite some years. I think all AV's that are worth anything use it. I for a fact know avast!, AVIRA and Bitdefender do, but you can be assured most other major players do it as well.
Again, since I'm not aware of any other vendor presentig the tech so nicely, look at this:
Avast Technology
In an essence, it's not a sample by sample analysis anymore, all big companies use similarity based classification because there is just too many samples every day to do it the old fashioned way. If all the given characteristics place the given file within the region where known malware with similar characteristiucs is located in the learning system "map", then it flags them as malicious. If they are in the clean/safe region, they are not detected. Anything in the grey area is sent to further analysis either by more demanding systems or to human analysts who check the files manually and then make sure these files are placed into correct group in order to fine tune future classifications.