Siri in iOS 6 vs Google Voice Search in Android 4.1 Jelly Bean (video)
Both services are able to tell you the weather when you ask them, set up timers and reminders, as well as relay sports results to you with the power of natural language. In the video below from Techno Buffalo it is clear that Google's new solution is faster and the voice it utilizes sounds more human, while Siri has more sophisticated info cards layout popping up when you ask it how tall is Kobe, for example.
Also, with anything that has to go through search Google shows you the results directly, while Siri asks you whether you want to search for it. Both services are still not entirely final, so there will be more comparisons further down the road, we only know that Samsung might not have bothered with S Voice at all.
The performance of the new Voice Search showcased below also makes us very optimistic about its interaction with the Google Now virtual concierge novelty that comes with Jelly Bean.