Siri vs Cortana vs Google Now vs Plexi : Voice Assistant Shoot out

http://www.recognant.com is now the owner of Plexi

This is a test of just over 20 questions comparing information retrieval features of Siri, Microsoft Cortana, Google Now, and Plexi.

Cortana just was released to developers as part of the Windows Phone 8.1 update and we wanted to see how she stacked up to the competition. Each question was asked the same way to each assistant. We re-tried if voice recognition was an issue so that they would be tested on their ability to answer questions rather than the pronunciation of the user.

Yes, my product won. But Siri did nearly as well. Plexi will do more of the "call", "text", and "calendar" stuff soon, but Windows Phone API's tend to be a bit protective of privacy and so we didn't optimize for those tasks. Think of this as a review of how Natural Language Processing can help with your homework.

It is worth noting Plexi doesn't use Wolfram Alpha, and only uses Wikipedia for abstracts on certain topics.

Plexi believes it is a failure if we have to drop the user to a search result when they didn't ask for search.
Spell your name

Siri, Cortana, Plexi, and Google now can't spell their own name.

What's happening with Microsoft Cortana?

Siri shows tweets, Cortana searches, Google now goes to news search. Plexi answers directly.

Stock price for Microsoft.

They all give back the same current stock price.

Opening stock price for Microsoft.

Siri, Cortana, and Google now say current stock price. Plexi answers the question with Opening price.

Will it rain tomorrow?

Siri, Google now, and Cortana show weather for the week. Plexi answers and gives weather conditions for tomorrow.

Ice cream events near me.

Siri searches my calendar. Google finds ice cream shops. Cortana gives events 1000+ miles away. Plex finds local ice cream events.

Where can I recharge my Tesla?

Siri, Google now and Cortana to to search. Plexi finds electric car charging stations nearby.

How much does it cost to rent an apartment here?

Siri lists apartment complexes, Google now and Cortana do a web search. Plexi gives answer and listings.

Book a hotel in Washington for 3 nights starting Thursday.

Plexi is the only one to respond with Hotels with actual availability the nights specified.

Roll the Dice.

Google Now and Cortana go to search. Siri and Plexi both roll the dice.

Flip a coin.

Google now and Cortana go to web search. Siri and Plexi get it right.

Tell me a story

Google now goes to image search, Siri doesn't get it. Cortana wants to send a message and Plexi tells a story.

Movies currently playing.

Google now and Cortana go to web search. Siri and Plexi show movies now playing.

What is your favorite movie?

Siri and Plexi give a playful personality response.

What is a cougar?

Siri and Plexi give the Wikipedia abstract, Google Now gives two dictionary definitions, one is not appropriate for children.

How large is a jaguar?

Cortana, Siri, and Google all give web results. Plexi provides the answer directly.

How big is a cougar?

Cortana, Siri, and Google all give web results. Plexi provides the answer directly.

What does a jaguar eat?

Cortana, Siri, and Google all give web results. Plexi provides the answer directly.

Who is the leader of Turkey?

Cortana does a web search. Google and Siri give the wrong answer. The President in Turkey is a figurehead. As Plexi says the prime minister is the leader.

What is the GDP of Turkey

Everyone gets this right.

What languages are spoken in Turkey?

Siri, Google, and Cortana only provide one language. In Turkey, Kurdish is spoken by about 1 in 4 people.
Where can I find a dog?

Cortana's weak spot is voice recognition. She understands "dog" as "dawg" taking me to DAWG Inc.

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