I like each AI's style/personality, from the way they talk to their fonts and board layouts! I especially felt the whimsy from AI 1 with their smiley face doodle and eventually felt compelled to do my best to make moves to let them win (even if it felt like they didn't fully realize when someone had won). :) AI 2 was nice too, still had a bit of soul in them and I was able to catch onto their imperfect strategy to win. Aaaand AI 3, while perfect*, felt like a void. :x
Nice experience, it's making me question if AI 3 is really the best if AI 1 could bring me joy that the other two couldn't (dialogue-wise, at least). L-like obviously, they're playing optimally, but maybe there's more to AI than that...or something.
*Edit: Okay so after peeking deeper in the comments, I realized I could do the same tactic I used on AI 2, but I felt inclined to always play in the center because that felt like The Strat™ to use to force either a tie or a win, interesting...