In all seriousness, Hammurabi may be the smartest AI out of all of them, because he knows exactly how to screw you over.
Are you playing as Greece? Are you taking every step to get the Oracle built ASAP? Nope, Babylon built it 5 turns after you spawned.
Are you playing as Persia? Are you hoping to steamroll through Mesopotamia to get that 8% territory? Nope, Hammurabi murders your massive army with an axeman and a spearmen (or in my example, Longbows).
In the few starts I've had, apparently the Babylonian AI knows what to do depending on which civ you, the player, are playing as. The one time recently that I haven't seen Hammurabi have bronze-working by the Persian spawn was when I was playing as Phoenicia, a civ that didn't pose a threat to them.
The main issue with Babylon is that they appear to beeline certain techs and ignore others. So i suggest that maybe we need some more tech pre-requisites. Example: Feudalism only has writing as a pre-req, so once you have Monarchy you can ignore everything else and jump to the middle ages and superior defenses. That definitely needs to be addressed.