Ex Machina (2015)

Caleb, a 24 year old coder at the world's largest internet company, wins a competition to spend a week at a private mountain retreat belonging to Nathan, the reclusive CEO of the company. But when Caleb arrives at the remote location he finds that he will have to participate in a strange and fascinating experiment in which he must interact with Ava, the world's first true artificial intelligence, housed in the body of a beautiful robot girl.