The whole “Cogito Ergo Murder” trope isn't very realistic at all, and Ex Machina if anything seems to be very subtle in this regard: Ava might be just a goal-ma

The whole “Cogito Ergo Murder” trope isn't very realistic at all, and Ex Machina if anything seems to be very subtle in this regard: Ava might be just a goal-maximising algorithm with a very broad toolbox, Kyoko (insofar as she transcends her programmed limits and deeply surprises her creator) might be the “True AI” in the show.