Vanity Fair explains:

The folks over at Buzzfeed noticed that if you ask Siri about Scarlett Johansson’s performance as a sexy iOS in Spike Jonze’s tech-romance Her, Apple’s intelligent personal assistant throws some serious shade. Among Siri’s quips (written by her deliciously catty Apple programmers): “In my opinion, she gives artificial intelligence a bad name.”

Since Johansson, and her character Samantha, have not yet had the chance to properly respond, we took a moment during a phone call with the actress today—to discuss Her and Johansson’s brand-new partnership with SodaStream, the carbonated-beverage company with which the Tony winner says she is geekily obsessed—about the burn from her iOS peer. “My manager just told me! He sent me a link to that.” Thinking that Siri simply had an issue with her character, Johansson added, “As long as it’s not about me personally, I can take the criticism. But if it was about me personally I would have to seriously fight back.”

When we mentioned that Siri does go so far as to knock Johansson’s acting, her cool mood shifted. “She does comment on your performance though,” we told the actress. “She says, ’Her portrayal of artificial intelligence is beyond artificial.’”

“Oh. My. God,” Johansson responded, playfully hurt. “I feel like I’ve been betrayed. The other day I asked Siri how I looked and she said, ‘You’re the fairest of them all.’ So she’s obviously playing both sides. What the hell?”

When we suggested that Siri was maybe just jealous—of the fact that Samantha is more advanced and able to convince grown men (like Joaquin Phoenix’s character Theodore) to fall in love with her—Johannsson still wasn’t convinced.

“What a backstabber, man,” she joked. “Backstabber.” Maybe Apple programmers can facilitate a truce?

Don't be jelly, Siri.

i fight with siri all the time. she takes apology well. :)

I've stopped using Siri because I'm faster without her.

it's true. poor siri doesn't match a real human. but i did ask her some math questions she was very good at answering!

"yo, siri, how many years is a billion seconds?"

"31.7, emily." then she broke it down.

so i asked her about a million and a trillion. (11.5 days and 31,689 years.)

she was very helpful. (and the kids love it!)

Yes, she is great at conversions of miles to metric, too.

Clever, Apple, very clever.

You think they did this just to get press?

I have no doubt.   And to have fun.  Fun is in the culture of corporations filled with smart people.

True. I've been hearing good things about the "HER" movie too, which helps.