Apple’s new Siri AI is getting more personal, but one of its most visible personalization tools will skip many devices that can still run Apple’s latest software.
Apple unveiled the revamped assistant at WWDC 2026 on Monday, including a dedicated Siri app, broader AI capabilities, and new controls for customizing how Siri sounds, according to 9to5Mac . The catch: Siri’s new voice customization feature requires some of Apple’s newest iPhone, iPad, Mac, or Vision Pro hardware.
Apple’s new Siri AI adds custom voice controls but limits them to newer devices
The new Siri voice controls let users adjust the assistant’s pace and expressivity with sliders, while choosing Siri’s accent from a drop-down menu, 9to5Mac reported.
That makes voice customization one of the more tangible parts of the Siri AI upgrade. Users may not immediately see the architecture behind Apple’s assistant overhaul, but they will notice whether Siri sounds faster, slower, flatter, warmer, or more expressive.
Apple’s own announcement frames Siri AI as a major reset. The company said the assistant is powered by Apple Intelligence and built around personal context, onscreen awareness, broad web knowledge, and deeper system integration across Apple products.
“We’re excited to introduce Siri AI, a dramatically more capable and conversational assistant designed to help users find information and get things done throughout the day,” said Craig Federighi, Apple’s senior vice president of Software Engineering.
But the voice tools are not universal. Apple’s compatibility language, as reported by 9to5Mac, makes clear that access depends on hardware, not just whether a device can install iOS 27, iPadOS 27, macOS 27 Golden Gate, or visionOS 27.
That split is the story. Apple is presenting Siri AI as a systemwide assistant upgrade, yet reserving at least one personal-feeling feature for newer machines.
Siri voice customization shows Apple’s AI features are becoming hardware-gated
The expectation: if a device gets the new operating system and the new Siri AI, it gets the new Siri controls.
The reality: Apple is separating the broader Siri AI rollout from at least one premium personalization feature. Voice customization has its own hardware floor.
That matters because the feature is not buried in a developer framework or limited to a niche workflow. Siri’s voice is the interface. Changing its pacing and expressivity could make the assistant feel less mechanical and more tailored to the user.
For readers tracking Apple’s pre-WWDC software cycle, MLXIO previously covered Siri’s ChatGPT redesign leaks in iOS 27 renders for iPhone and the broader iOS 27 setup in iOS 27 bets on fixing your iPhone before AI takes over. Monday’s news adds a harder compatibility line around one specific Siri AI feature.
Apple has not fully explained why Siri voice customization needs this exact device list. The published requirement points to newer chips and memory thresholds on iPad and Mac, but the company has not provided a detailed technical breakdown in the supplied materials.
The practical result is simpler than the engineering rationale:
- Before: A user might assume the new Siri AI experience arrives with the new OS.
- After: Some Siri AI features may arrive, while voice customization stays locked to newer hardware.
- User impact: Older-device owners should not assume “supports iOS 27” means “gets every new Siri AI tool.”
- Upgrade pressure: Users who care most about Siri personalization now have a clearer reason to check device eligibility.
Analysis: Apple is drawing a distinction between availability and full feature access. That distinction will likely shape how users judge the Siri AI rollout, especially if other high-profile features carry separate hardware limits.
Eligible iPhone, iPad, Mac, and Vision Pro models will decide who gets the new Siri voice tools
Apple’s listed requirements for Siri voice customization are specific.
According to 9to5Mac, the feature is available on:
| Product category | Siri voice customization requirement |
|---|---|
| iPhone | iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air |
| iPad | Models with M4 and later and at least 12GB of unified memory |
| Mac | Models with M3 and later and at least 12GB of unified memory |
| Apple Vision Pro | Apple Vision Pro (M5) |
That list creates an important distinction. The restriction applies to Siri’s voice customization feature, not necessarily every new Siri AI capability described during Apple’s announcement.
Apple’s broader Siri AI pitch includes a dedicated app for revisiting conversations, expanded Visual Intelligence, integrated writing tools, onscreen awareness, and personal context features across messages, emails, photos, and more. Apple said Siri AI features are available for developer testing starting today and will be available as a beta to users later this year, according to Apple.
The compatibility picture may still need careful reading as Apple publishes more developer documentation. For now, anyone buying or updating hardware specifically for Siri voice personalization should verify that their device matches Apple’s stated model, chip, and memory requirements.
This is especially relevant for iPad and Mac, where Apple’s requirement is not just “M-series.” It includes both a chip generation threshold and at least 12GB of unified memory.
Apple’s next Siri details to watch: rollout timing, regions, and feature availability
Apple has given the broad rollout shape: developer testing starts now, with a user beta later this year. The open questions are narrower and more useful.
The first is whether Siri voice customization follows the same beta timing as the rest of Siri AI. The supplied materials do not confirm a separate schedule for the voice controls.
The second is how Apple handles regional and language availability. The source material confirms accent selection, pace, and expressivity controls, but does not provide a market-by-market or language-by-language list.
The third is how much control the sliders actually provide. “Pace” and “expressivity” are clear enough as concepts, but users and developers will need the beta to see whether the range is subtle, dramatic, or tightly constrained.
The new Siri AI is Apple’s biggest assistant reset in the supplied WWDC material. But the immediate takeaway is more surgical: the most personal part of the new Siri voice experience is reserved for the newest Apple hardware, and device compatibility will decide who gets it first.
What This Means For You
- Siri’s most noticeable personalization feature will not be available on every device that runs Apple’s latest software.
- Apple is tying parts of its AI experience to newer hardware, which may influence upgrade decisions.
- The change highlights a growing gap between software updates and full AI feature access across Apple devices.
