Apple testing souped-up Siri with help from ChatGPT

iPhone 15 Pro shown in hand
(Image credit: Tom's Guide)

When iOS 18 rolls out with the iPhone 16 this September, it’s widely expected to be Apple’s first foray into the game-changing world of generative AI, taking on the likes of the Samsung Galaxy S24 in that field.

Yesterday, the iOS 17.4 beta arrived, and a little digging from 9to5Mac has uncovered evidence of Apple’s internal testing of artificial intelligence. The company is indeed working on its own model, codenamed Ajax as previously revealed.

As the site explains, the code includes references to a private framework called “SiriSummarization” that makes calls to the ChatGPT API. This apparently works with prompts such as “please summarize,” “please answer this question” and “please summarize the given text.”

9to5Mac is keen to point out that Apple doesn’t plan to lean on ChatGPT permanently. Rather, it seems to be testing Ajax against two more established models: ChatGPT and FLAN-T5. In short, Apple is likely using its own on-device AI and then seeing how the results compare to the cloud-based ChatGPT (although the report adds that there’s also a version of Ajax that runs off-device too).

The included system prompts also apparently mention what to do when input comes from iMessage or SMS, suggesting some integration with the Messages app. Bloomberg’s Mark Gurman had previously indicated Ajax would be able to work with Messages to “field questions and auto-complete sentences,” so that makes sense. 

In the same report, Gurman wrote of the “edict” from Craig Federighi’s software team to ensure iOS 18 is filled “with features running on the company’s large language model.” It seems that the early fruits of this are currently being tested within iOS 17, even if those outside Cupertino can’t access them.

It has previously been reported that Apple is taking a different route in training its artificial intelligence to rivals in the space, requesting access to publishers’ archives for training purposes in exchange for millions of dollars (and legal liability should anything go wrong).  

While we aren’t expecting iOS 18 to officially launch until September, we’ll likely get an early taste before then with a beta at WWDC, which is usually held in June. Both the event and the beta itself are predominantly aimed at developers, but it should still give us early indicators of how the newly enhanced Siri shapes up against its more established rivals.

TOPICS
Alan Martin

Freelance contributor Alan has been writing about tech for over a decade, covering phones, drones and everything in between. Previously Deputy Editor of tech site Alphr, his words are found all over the web and in the occasional magazine too. When not weighing up the pros and cons of the latest smartwatch, you'll probably find him tackling his ever-growing games backlog. Or, more likely, playing Spelunky for the millionth time.

Read more
Apple Intelligence logo on iPhone
Apple Intelligence could get Gemini alongside ChatGPT — here's why that's a big deal
iOS 18 logo on iPhone in person's lap
iOS 18.5 is coming soon with huge Siri upgrades — here’s everything to expect
Apple Intelligence logo on iPhone
Apple Intelligence — everything you need to know about Apple's AI
Apple Intelligence logo on iPhone with Apple logo in background
Leaked memo reveals Apple’s AI plans for 2025 — this is what the company is focusing on
Apple Intelligence logo on iPhone
iOS 18.3 proves Apple Intelligence is far from finished
iPhone 16 Pro shown held in hand
iOS 19 may bring Apple Intelligence powers to more iPhone apps — but without any big new features
Latest in Software
Google wallet app on screen
Google Wallet now lets kids to make supervised contactless payments and use digital passes — what you need to know
and image of the Google Chrome logo on a laptop
Google Chrome just updated its rules to stop future Honey scandals: here's what's changed
How to tour the Super Bowl stadium virtually with Google Maps
Google Maps glitch is purging Timeline data — what we know
Mac Studio on a desk hooked up to a Studio DIsplay
Mac Studio M3 Ultra: 3 reasons to buy and 2 reasons to skip
Gboard app logo on mobile phone resting on a keyboard
Google Gboard redesign has already angered users — and I can see why
Waze app on iPhone in car
Forget Google Maps — Waze just got a huge upgrade that will help millions of drivers
Latest in News
Galaxy S25 Ultra Now brief
Samsung’s Personal Data Engine is a big addition to the Galaxy S25 — here’s why
Apple Watch Series 10
Future Apple Watch models could get a surprising new feature — what we know
NYTimes Connections
NYT Connections today hints and answers — Monday, March 24 (#652)
NYT Strands on a cellphone
NYT Strands today — hints, spangram and answers for game #386 (Monday, March 24 2025)
iPhone 16 Pro vs iPhone 16 Pro Max in hand showing displays
Forget iPhone 17 — iPhone 18 could get this huge upgrade
The new Husqvarna iQ series robot lawn mower.
Husqvarna’s new robot mowers offer GPS for less