The last of Siri's co-founders, Tom Gruber, has announced his retirement from Apple. Siri was acquired by Apple in 2010 but two of its founders left in the succeeding years. The news comes in the wake of Apple recently appointing Google's former head of Machine Intelligence, John Giannandrea, as Chief of Machine Learning and AI Strategy.
https://www.notebookcheck.net/Tom-Gruber-the-last-of-the-Siri-co-founders-leaves-Apple.317370.0.html