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

Tim Cook WWDC 2018

Report: Tim Cook to Step Down as Apple CEO 'as Soon as Next Year'

Saturday November 15, 2025 2:40 pm PST by
Apple is preparing for Tim Cook to step down as CEO of the company "as soon as next year," according to the Financial Times. The company's board of directors and senior executives "recently intensified preparations for Cook to hand over the reins," the report said. While the report said that Apple is unlikely to name a new CEO before its next earnings report in late January, it went on to ...
iOS 26

Everything New in iOS 26.2 Beta 3

Monday November 17, 2025 3:20 pm PST by
Apple provided developers with the third beta of an upcoming iOS 26.2 update, and there are still new features that are being added with each beta that we get. We've rounded up all of the changes that Apple made in beta 3. AirDrop Apple added new AirDrop functionality, providing a way for two people to share files temporarily without having to add one another as contacts. iOS 26.2...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2, AirPods Pro 3, and AirPods 4

Thursday November 13, 2025 11:35 am PST by
Apple today released new firmware designed for the AirPods Pro 3, the AirPods 4, and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B25, while the AirPods Pro 2 and AirPods 4 firmware is 8B21, all up from the prior 8A358 firmware released in October. There's no word on what's include in the updated firmware, but the AirPods Pro 2, AirPods 4 with ANC, and AirPods Pro 3...
best early black friday deals

Best Black Friday Apple Deals Live Now - Save on AirPods, iPads, and Apple Watches

Saturday November 15, 2025 1:45 pm PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
Apple Wallet ID Illinois

iPhone Driver's License Feature Launching in Illinois

Tuesday November 18, 2025 8:47 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. Starting this Wednesday, November 19, the feature will be available to residents of Illinois. The announcement confirmed that the...
applecare apple care banner

Apple Brings New AppleCare+ Options to India

Tuesday November 18, 2025 8:42 am PST by
Apple today announced an expansion of AppleCare+ coverage in India, with new options for monthly and annual plans, and the addition of Theft and Loss for iPhone for the first time. Options for monthly and annual AppleCare+ plans in India provide more choice and flexibility, allowing users to keep coverage for as long as they require. Apple's vice president of Worldwide iPhone Product...
iPhone Pocket Short

iPhone Pocket Now Available to Order, But Already Selling Out

Friday November 14, 2025 6:20 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. iPhone Pocket is available to order on Apple's online store starting today, in the United States, France, China, Italy, Japan, Singapore, South Korea, and the United Kingdom. However, it is already completely sold out in the United...
apple silicon mac lineup 2024 feature purple m5

Apple's 2026 Mac Plans

Friday November 14, 2025 3:23 pm PST by
Most of Apple's Macs are slated to get M5 chips across 2026, and there's a possibility we'll even see the first M6 chips toward the end of the year. Updates are planned for everything from the MacBook Air to the Mac Studio. MacBook Air (Early 2026) The MacBook Air will be one of the first Macs to get a 2026 refresh, with an update planned for the first few months of the year. The MacBook...
CarPlay Liquid Glass Dark

Here's When Tesla is Expected to Add Support for Apple CarPlay

Sunday November 16, 2025 6:49 am PST by
In his Power On newsletter today, Bloomberg's Mark Gurman reiterated that Tesla plans to add Apple CarPlay support to its vehicles "in the coming months." This is easily the biggest news for the regular version of CarPlay in years, should Tesla actually follow through with offering the system in its vehicles. As noted by Gurman, this would be a stunning reversal for Tesla and its CEO Elon ...
tvOS 26 Profiles

tvOS 26.2 Adds a Useful New Feature to Your Apple TV

Friday November 14, 2025 10:02 am PST by
Starting with the upcoming tvOS 26.2 update, currently in beta, additional profiles created on the Apple TV no longer require their own Apple Account. In the Settings app on the Apple TV, under Profiles and Accounts, anyone can create a new profile by simply entering a name and indicating whether the profile is for a kid. The profile will be associated with the primary user's Apple Account,...

Top Rated Comments

KieranDotW Avatar
152 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
152 months ago
Oh hai, Microsoft! Welcome to 2011!
Score: 40 Votes (Like | Disagree)
AustinIllini Avatar
152 months ago
This will probably put Siri in third place.
Score: 36 Votes (Like | Disagree)
dBeats Avatar
152 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
152 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
152 months ago
Nice "halo" throwback with the name.
Score: 27 Votes (Like | Disagree)