Siri's CTO is Tom Gruber, a recognized expert in Artificial Intelligence, intelligent interfaces, and semantic technologies.
Tom was a founder and CTO of RealTravel, a knowledge sharing site for travel; a founder and CTO of Intraspect, a collaborative knowledge management application for business; and a founder and Chief Scientist at Consider Solutions. Products designed by Tom are used by millions of consumer and professional users.
He was a pioneering researcher at Stanford in the use of Web for knowledge sharing and semantic integration, and helped establish the technical foundations of the Semantic Web.
Tom is also an advisor to SocialText, LinkedIn, Radar Networks, Powerset, and others.