Siri is powered by Nuance technology. They&#x27;ve been pretty good for a decade now. David Pogue and John Siracusa have been using it to do their writing.<p><a href="http:&#x2F;&#x2F;arstechnica.com&#x2F;apple&#x2F;2013&#x2F;10&#x2F;os-x-10-9&#x2F;23&#x2F;" rel="nofollow">http:&#x2F;&#x2F;arstechnica.com&#x2F;apple&#x2F;2013&#x2F;10&#x2F;os-x-10-9&#x2F;23&#x2F;</a>