Are stupid, i thought the A.I. in RE: Zero and Persona 3 was bad sometimes, this game honestly puts them to shame. I don't know if there is a hidden "make your party less stupid" option that i am missing, but they really seem to be idiots. I was fighting a boss enemy with a partner that throws bombs that can explode, the enemy was hovering off the ground, the A.I. apparently can't use the jump button, because every time he would just run straight into the enemy, not doing a damn thing. I switched to him, used his main attack, surprise surprise it hits the enemy just fine if it's hovering, which the computer couldn't seem to use. Just got another party member, ran around, found an enemy,they decide that instead of attacking him, they will run around in front of him, only attacking once i pushed them close enough that their bodies touched his. This is shameful on the part of Squeenix, the hell did they do.
Its rare to find a game with a decent AI. In the end, the only good part of having a party is some extra damage when you group a enemy or extra meatshield for you. I already saw games that lets you customize the AI. But these are rare and sometimes it takes a lot of time to customize then right.