Microsoft Announces Siri Competitor Cortana, Coming With Windows Phone 8.1

Microsoft today announced Windows Phone 8.1, which comes equipped with the company's digital assistant, Cortana. In development for several years, Cortana is Microsoft's answer to Siri and Google Now, the digital assistants from Apple and Google.

Cortana is named for an AI character in the popular Halo video game series and as in the game, the assistant is voiced by actress Jen Taylor. Given a distinctly female personality, she is powered by Microsoft's search engine, Bing, and is designed to learn about users by asking questions and monitoring user activity, interacting through both text and speech.

cortana
According to an extensive piece on Cortana from The Verge, Microsoft designed the feature based on real personal assistants, giving Cortana a "Notebook" to work from. The Notebook can be described as a settings page, allowing users to designate what Cortana can track. In her Notebook, Cortana stores information like personal interests, relationships with people, frequently visited places, appointment dates, quiet hours, and more.

"It's her view of you, but clearly you can just snatch it from her at any time and say 'That’s not right, I don't want you to know this' or 'I'm not comfortable with you reading my email,'" explains Ash. "So you have complete control over what she knows and she’s transparent about it."

Entries in the Notebook are stored in the cloud, and you can share contact information with it, as well as your interests, home and work locations, and more. The notion of Cortana acting as a personal assistant with a notebook— as opposed to a creepy stalker — has been drilled into the team from the beginning, they say.

Cortana is a core function of Windows Phone 8.1, replacing the existing search function. Like Siri she can schedule reminders, but Cortana's functionality is somewhat more powerful, allowing reminders to be tied to people and locations. For example, Cortana can be asked to give a reminder to discuss a certain topic when calling a contact, with that reminder popping up when a call is placed.

The digital assistant also offers a daily summary of information, similar to what can be found in Apple's own Notification Center. Cortana lists upcoming appointments, reminders, weather information, and more. She can, with permission, track user email to pull out information like airline reservations.

Like Siri, Cortana has a personality. She has witty responses for certain questions, such as "Who is your father?" to which she replies, "Technically speaking, that'd be Bill Gates. No big deal." Displayed as a circle on a phone screen, she's also able to express 16 different emotions.

While Siri has not been opened up to developers, Microsoft is releasing a third-party SDK. Cortana will integrate with services like Hulu, Twitter, Facebook, allowing people to use voice commands to launch television shows or send a tweet.

Cortana remains in the beta stages, as there are bugs with the software that still need to be worked out. Windows Phone 8.1 will launch in late April or early May, but Cortana will only be available in the United States for the time being.

Microsoft also announced that it is making Windows licenses free for mobile phones and tablets that have screens of less than nine inches, putting it on par with Google's Android, which is offered to device manufacturers for free.

Popular Stories

iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
iOS 26

Apple Releases iOS 26.2 With Alarms for Reminders, Lock Screen Changes, Enhanced Safety Alerts and More

Friday December 12, 2025 10:10 am PST by
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. ‌iOS 26‌.2 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
macOS Tahoe 26 Thumb

Apple Releases macOS Tahoe 26.2 With Edge Light

Friday December 12, 2025 10:08 am PST by
Apple today released macOS Tahoe 26.2, the second major update to the macOS Tahoe operating system that came out in September. macOS Tahoe 26.2 comes five weeks after Apple released macOS Tahoe 26.1. Mac users can download the macOS Tahoe update by using the Software Update section of System Settings. macOS Tahoe 26.2 includes Edge Light, a feature that illuminates your face with soft...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods Pro 3

Thursday December 11, 2025 11:28 am PST by
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21. There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...
ipados 26 1 slide over

Apple Releases iPadOS 26.2 With Multitasking Improvements

Friday December 12, 2025 10:09 am PST by
Apple today released iPadOS 26.2, the second major update to the iPadOS 26 operating system released in September. iPadOS 26.2 comes a month after iPadOS 26.1. The new software can be downloaded on eligible iPads over-the-air by going to Settings > General > Software Update. iPadOS 26.2 continues with the multitasking improvements that were added with iPadOS 26.1. You can now drag and...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...

Top Rated Comments

KieranDotW Avatar
153 months ago
I just wish they'd get rid of Siri all together. I was probably one of the first people to turn it off on the iphone 4S.

If you can just turn it off, why do you care that other people have Siri on their phones?
Score: 45 Votes (Like | Disagree)
Spanky Deluxe Avatar
153 months ago
Oh hai, Microsoft! Welcome to 2011!
Score: 40 Votes (Like | Disagree)
AustinIllini Avatar
153 months ago
This will probably put Siri in third place.
Score: 36 Votes (Like | Disagree)
dBeats Avatar
153 months ago
Where's a good place to find Thai food around here?

"Just a sec......


....hmm that's strange....


....uh oh....


A fatal exception OE has occurred at 0028:C0011E36 in VXD VMM(1) + 00010E36. The current application will be terminated.

* Press any key to terminate the current application.
* Press CTRL+ALT+DEL again to restart your computer. You will lose any unsaved information in all your applications.

Press any key to continue _ "


I knew this Windows phone thing was a bad idea...
Score: 35 Votes (Like | Disagree)
sniffies Avatar
153 months ago
Very exotic-sounding name. When I hear 'Cortana', I envision an Amazonian woman wearing leopard skin around her hips with large juicy breasts.

CORRRR-TANA!!
Score: 30 Votes (Like | Disagree)
Kenrik Avatar
153 months ago
Nice "halo" throwback with the name.
Score: 27 Votes (Like | Disagree)