Listen to Siri’s voice evolve from iOS 9, 10, and 11

Jump to this page, scroll down almost all the way to the bottom, then click the various play buttons to hear how Siri’s voice has changed with each new major iOS release.

To my ear, each rev gets higher in pitch, with the iOS 11 version of Siri sounding like a different person entirely than the Susan Bennett voiced Siri we came to know and love.

The iOS 10 version of Siri is a recognizable voice to me, as recognizable as a friend’s voice. The new version sounds a bit impersonal.

From the text above the samples:

For iOS 11, we chose a new female voice talent with the goal of improving the naturalness, personality, and expressivity of Siri’s voice. We evaluated hundreds of candidates before choosing the best one. Then, we recorded over 20 hours of speech and built a new TTS voice using the new deep learning based TTS technology. As a result, the new US English Siri voice sounds better than ever.

I expect the new version is an early wave of the latest voice generation approach used by Apple and that I will get used to this new voice over time.



  • Andy Orr

    The iOS 11 version may sound like a different person, but the pacing and inflections and intonation are much more natural to my ear. I think it is a big improvement. The samples in the article were also lower in distortion with each OS change which doesn’t hurt.

  • 11 definitely sounds more human with natural cadence, and in some cases perfectly human. but it’s also definitely a different voice and personality compared to 9 and 10 (10 being a more natural version of 9).

  • James Hughes

    I much prefer iOS 11 Siri voice. Even in the first play back the “E” in “E Street Band” is so much more natural. Overall the new Siri voice is more natural. My wife, however, disagrees. Not with weather or not the voice is more natural though. She just likes the previous voice better. I think she simply got used to it. As you mention you’ll most likely get used to the new voice over time, I expect she will and many others will as well.

  • Kip Beatty

    Siri is dead to me. After a 5 year relationship, some new woman moved in my iPhone. I don’t know who she is anymore. She might as well be the random voice from a rental car nav system. RIP Siri.

    BTW, on some level Apple must know this too or else they wouldn’t have used Susan’s Siri for the Rock commercials. That would have been the perfect rollout for the new and “improved” Siri voice.

  • Heos Phorus

    I prefer the ios10 version because of the lower pitch – sounds calmer. The iOS 11 version sounds more natural, though.

    • James Hughes

      I agree. I don’t like the new voice because of the pitch, but because it sounds more natural. Apple could just as well change the current lower pitch Siri voice and make it more natural and that would be fine too.

      • There’s no “just” to that, unfortunately. I’m sure it would have involved more samples from Susan.

        Apple should have done it, though.

  • Brandon

    Interesting to hear how each generation improved on being more natural and less staccato.

    To me, the iOS 11 voice sounds like a younger woman, probably 20s or 30s age, while the previous voice sounded slightly older, more 40s to 50s. As well, the original voices sounded more authoritative (in a good way) while the new voice is more friendly. Overall, I think the new voice is an improvement.

    However, I can’t tell if I like the new voice or old voice better. I’m having a hard time differentiating between it being better or worse or just new and unfamiliar.

  • It’s interesting. To me the iOS 10 voice already wasn’t Siri. I recognize her as a relative of Siri, though.

    I prefer the authority in iOS 9 and 10 to the naturalness in 11, but I’ll get used to it. Still, I wish Apple had brought Susan Bennett in for more sessions rather than getting a new voice.

  • iOS 11 is Siri’s granddaughter. They grow up so fast.

  • iOS 11 Siri sounds younger and happier. She sounds more like someone who’d greet you at the Apple Store.

  • rick gregory

    Interesting. The 11 voice is much more like a natural human voice but it’s nothing like Siri’s standard voice. I wonder if Bennet refused or wanted silly terms or something. I don’t dislike the 11 voice, but it’s very much just another female voice vs “Siri”

  • trex67

    I think the new voice is a vast improvement. There was nothing wrong with Ms Bennet’s voice, but Siri has always sounded too mechanical, robotic. The new version maybe nudges a bit into the uncanny valley, but I find it easier to listen to. The real point, though, is the technology just keeps getting better, and it’s nearing the point of indistinguishable.

  • GS

    The higher pitch may be easier to hear with ambient noise perhaps? A little like The Invasion of the Bodysnatchers though. Like someone stole Susan.