What do the ais eat?

* Do you mean AI (artificial intelligence)? If so, AI is a software concept and doesn't "eat" in the biological sense.

* Do you mean "AIs" as a shortened version of "artificial intelligences"? This is still a software concept and wouldn't eat.

* Do you mean something else entirely? Perhaps you're thinking of a specific animal or group of animals?

Once you provide more context, I can give you a more accurate answer.