Piper Jaffray analyst Gene Munster, who has regularly assessed Siri's accuracy in terms of correctly interpreting and answering queries, has issued the latest version of his Siri report card, noting that Siri has continued to improve under iOS 7, particularly in terms of being able to properly interpret questions being asked.
The primary improvement between Siri in iOS 6 and iOS 7 came from its performance in noisier areas, where Siri was able to translate better through a noisy environment (94% vs. 83% correct in Aug iOS 6). Based on our testing, iOS 7 Siri's net ability to answer questions (factors in questions not correctly understood) improved to 79% from 77% in August with iOS 6.
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The improvements in Siri's understanding come alongside but separate from Apple's continued efforts to reduce its reliance on Google, as evidenced by Siri's shift to emphasize Bing, Wikipedia, and WolframAlpha results. In Munster's most recent testing, only 4 percent of Siri's answers relied on Google, compared to 17 percent in August testing and 27 percent in December 2012.
Munster also compares Siri to Google Now, finding that the two services are now essentially tied in effectiveness with a "C+" score after Siri held a substantial lead in the year-ago testing. In the latest testing, Google Now held small leads in content areas such as commerce and information, while Siri performed significantly better for operating system controls.
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Top Rated Comments
I get 90% accuracy, I don't know what's going on with you.
Never defend a technology! Technology is meant to develop to serve the requirements/limitations of existing human behaviour; human behaviour shouldn't be expected to adapt to meet the requirements/limitations of technology.
Specifically, I use Siri a lot to play music in the car. I will say "Play Song X" or "Play Album Y". Siri used to be pretty good at hearing the name of the song and finding it in my music library. Now it frequently hear the names incorrectly. Even when it does hear the correct name, it will play a song with a completely different name or simply say "Sorry, I couldn't find that in your music". What do you mean you couldn't find David Bowie in my music??? It's right there!
This regression is quite infuriating. Also, Siri still often fails to respond ("Sorry, there's something wrong") or take 20+ seconds to respond with the wrong answer. I believe we need to give all of Apple's web services time to gather data and make iterative improvements, but I have very little tolerance when they actually get worse over time.