The AIs in Interstellar are interesting--they seem to be sentient and display things like initiative, humor, and very flexible cognitive processes, but they appear to lack any sort of survival drive or self-motivation. All in all, a really interesting take on AI.
The AI in Chappie is not malicious or hostile, but it has some badly skewed ideas about how to interact with people, probably owing to being "raised" by South African drug-dealing gangsters. Chappie is a very non-Hollywood movie, which is probably why the reviews are so polarized (folks seem to hate it or love it, with little in between).
