Who invented siri?

Siri was developed by a team at SRI International, a nonprofit scientific research institute, as part of the CALO project, which aimed to create an intelligent personal assistant. The technology was co-founded by Dag Kittlaus, Adam Cheyer, and Tom Gruber, who later spun off Siri, Inc. The company was acquired by Apple in 2010, and Siri was integrated into the iphone in 2011.