The latest corporate acquisition in the AI field for Apple is San Francisco-based PullString, a company that was founded in 2011 by former Pixar executives and has been working on "shaping the future of voice applications" ever since. The value of the deal is rumored to be around US$30 million.
https://www.notebookcheck.net/Apple-acquires-AI-startup-PullString.410311.0.html