I've watched both movies. Her was an audio only chatbot and this is already doable. SillyTavern + OpenAI Whisper + Silero TTS and you've basically got Her. I've already done it and it works quite well, Whisper is much much better than the speech recognition Google offers even when running locally on a CPU.
Ex Machina was an actual physical robot. Not possible yet, but since GPTs became smart, huge investments are being made in robotics, the most recent annoucement today: https://futurism.com/the-byte/humanoid-robot-maker-deal-open...
Once this happens a robot will be basically able to do any job a human can do.