Cortana trails Google Assistant but is far more accurate than Siri or Alexa

October 2, 2017

A recent study by digital marketing agency Stone Temple asked major voice assistants 5,000 general knowledge questions (the most common use case for smart assistants). It found Google Assistant to be the clear leader, with Microsoft’s Cortana a bit behind. Alexa, meanwhile, was well off the pace, directly answering just 22% of questions correctly.




This certainly is not a good result for the most common use case for voice assistants, but keep in mind Amazon’s Alexa managed to answer even fewer questions directly. Siri has some catching up to do, for sure, but given that Google itself still could not answer 32% of the questions directly — and did not answer correctly or completely 10% of those answered — it is worth reminding that there is still a long way to go for everyone in the voice assistant race.


Accuracy and consistency was probably the main reason why Apple is planning to switch from Bing to Google for Siri web-search results on iOS and Spotlight on Mac:





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