He doesn’t talk about AI as often as, say, psychiatry, but he talks about it with some frequency.
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=site%3Aslatestarcodex.com%20artificial%20intelligence
In particular, Meditations on Moloch makes it pretty clear that he takes AI seriously.
He doesn’t talk about AI as often as, say, psychiatry, but he talks about it with some frequency.
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=site%3Aslatestarcodex.com%20artificial%20intelligence
In particular, Meditations on Moloch makes it pretty clear that he takes AI seriously.