i've been played the beta for over 26 hours total, and i feel like the AI overall is pretty good.  The AI still hasn't mastered the use of the titan, or the new corvettes, and there is still lots of flying ships from one planet to another and then back again, but the AI can still give one heck of a fight if you put it on a higher level plane.   Overall, there is room for improvement (like there always will be) but the devs have handled the new items pretty well.

Pretty much agree with spacepilot. The AI is pretty good and they've fixed a lot of the AI problems from earlier in the beta, but sometimes the AIs are pretty dumb with how they handle their titans. You'll probably have to try several different settings to get a good challenge from the AI. Some modes are a bit wonky (like "Aggressive" goes almost entirely for cap ships). Overall it's good but could be better and they are working on it.