We don't have this kind of AI, and (as of right now), unless humans link the AIs we do have up to a bunch of killer robots (i.e. drones) then this is vanishingly unlikely.
Like, any scenario where AI kills us all requires us to give it the tools that it needs to do this (as well as a desire to do this, as right now they just attempt to generate text to solve a problem/question they are posed).