Siri, the Virtual Personal Assistant for the Apple iPhone
Breakthrough technology originally developed by SRI

Siri on an iPhone.
Apple launched the iPhone 4S in October 2011 with Siri, a voice-enabled virtual personal assistant that understands what you say and knows what you mean. Just ask Siri a question or say a command and Siri will go to work for you.
Decades of SRI research in artificial intelligence, including leadership of the largest known artificial intelligence project in U.S. history, as well as joint work with EPFL, the Swiss institute of technology in Lausanne, led to Siri's development. SRI spun off Siri, Inc. in 2007 to bring the technology to consumers. In April 2010, Apple acquired Siri, and in October 2011, Siri was unveiled as an integrated feature of the Apple iPhone 4S.
Find more about Siri on Apple's website.
Development History
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Date
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Event |
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October 2011
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Siri is unveiled as an integrated feature of the Apple iPhone 4S. |
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April 2010
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Apple acquires Siri, Inc. from SRI. |
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February 2010
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Siri, Inc. launches its virtual personal assistant app for the iPhone 3GS. |
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November 2009
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Siri, Inc. raises a $15.5 million Series B financing round from the same investors as in their previous round plus Hong Kong billionaire Li Ka-shing. |
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October 2008
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Siri, Inc. announces it has raised an $8.5 million Series A financing round, led by Menlo Ventures and Morgenthaler Ventures. |
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December 2007
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SRI spins off Siri, Inc. to bring the technology to consumers. |
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July 2003
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SRI announces that Defense Advanced Research Projects Agency (DARPA) has selected SRI to lead the Personalized Assistant that Learns (PAL) Program. SRI and a team of 20 leading research organizations are awarded $150M over five years to develop software, dubbed CALO, that could revolutionize how computers support military and other decision-makers. It is considered to be the largest artificial intelligence project in history. View PAL publications. |










