Apple recently gave Steven Levy an inside look at some of its deep learning and artificial intelligence work. Apple is said to have many people working on AI across various company initiatives. Of course much of the work is highly secretive, but some of it is already reflected in current iOS features—and not just Siri. From the story:
"You see it when the phone identifies a caller who isn't in your contact list (but did email you recently). Or when you swipe on your screen to get a shortlist of the apps that you are most likely to open next. Or when you get a reminder of an appointment that you never got around to putting into your calendar. Or when a map location pops up for the hotel you've reserved, before you type it in. Or when the phone points you to where you parked your car, even though you never asked it to."