Siri has long been the underdog in the virtual assistant market, trailing behind Amazon's Alexa, Google Assistant, and even Samsung's Bixby in conversational depth and task automation. For years, Apple promised a major overhaul of Siri under the banner of Apple Intelligence, but two major iOS updates passed without delivering the supercharged assistant that many anticipated. That changed at WWDC 2026, where Apple finally unveiled what it calls Siri AI — a genuinely useful, context-aware assistant that can handle complex queries and chained commands. We went hands-on with early beta builds and found Siri AI to be fast, accurate, and a meaningful step forward for the iPhone ecosystem.
However, not every iPhone user will get to experience this new intelligence. Apple has confirmed that Siri AI will only be available on devices compatible with Apple Intelligence — a prerequisite that includes every iPhone released since the iPhone 15 Pro, as well as iPads and Macs powered by Apple silicon. That means if you own an iPhone 15, iPhone 15 Plus, or any model older than the iPhone 15 Pro (including the entire iPhone 14 and earlier lineup), your phone will not support the new Siri. This limitation stems from the hardware requirements for Apple Intelligence, which demands the A17 Pro chip (or later) and at least 8GB of RAM. The 2024 iPad mini, which uses the same A17 Pro chip as the iPhone 15 Pro, is also supported.
To check if your iPhone is eligible, simply open the Settings app, scroll down, and look for the Apple Intelligence & Siri section. If that option appears, you're on track to receive the Siri AI upgrade when iOS 27 stable rolls out this fall. If it doesn't, your phone will still run iOS 27 — Apple has extended support back to the iPhone 11 — but you won't get the Apple Intelligence features, including Siri AI.
Interestingly, Apple says the new assistant will initially be released as a beta, even for compatible devices. Users will likely need to manually opt in, much like how those testing the iOS 27 developer beta had to join a waitlist. This cautious rollout suggests Apple wants to iron out any remaining kinks before a full public release, likely in early 2027.
The hardware divide: which iPhones get the most powerful Siri AI?
While all Apple Intelligence-compatible iPhones will get the core Siri AI features — including context awareness, the ability to reference information from notes, messages, emails, and photos, and the handling of complex prompts — not all models are created equal. Apple has built two tiers of on-device AI models: a standard model that runs on iPhones with 8GB of RAM (like the iPhone 15 Pro and iPhone 16 series) and a more powerful model that requires at least 12GB of RAM. This enhanced model is reserved for the iPhone 17 Pro, iPhone 17 Pro Max, and the new iPhone Air, which Apple launched in 2025.
The high-end on-device model enables expressive voices for Siri, improved speech recognition, and more accurate dictation. It also speeds up response times for complex queries that can be resolved locally, reducing reliance on cloud processing. Apple has trained these models using its Foundation Model architecture, which is designed to run efficiently on dedicated Neural Engine cores while ensuring user privacy through on-device processing. For tasks that require larger models, the assistant offloads to Apple's Private Cloud Compute platform, which promises that no one — not even Apple — can access your data.
Looking ahead, the upcoming iPhone 18 Pro and the rumored iPhone Fold (expected in 2027) will also benefit from the high-end on-device model. However, it remains uncertain whether the base model iPhone 18 will include the 12GB of RAM needed. Analyst Ming-Chi Kuo has reported that Apple is considering bumping the RAM in non-Pro iPhones to 9GB, but 12GB would be required to run the most powerful on-device AI models. This could create a permanent gap between the standard and Pro series when it comes to Siri's capabilities.
What Siri AI can do that the old Siri couldn't
In our hands-on testing, Siri AI proved to be a transformative upgrade. The assistant can now handle multi-step requests like: "Send a message to Mom telling her I'll be late, then add the dinner reservation to my calendar, and remind me to buy flowers tomorrow." It correctly extracted the contact, chained the actions across Messages and Calendar, and set a reminder — all without error. Previously, Siri would have required three separate commands.
Another standout feature is contextual awareness. If you ask, "What was the name of that restaurant you recommended last week?" Siri references previous conversations and notes, provided they are available in your Apple ecosystem. The assistant also gains the ability to query your photo library based on content. For example, "Show me photos from my trip to Japan with the cherry blossoms" will surface relevant images even if they weren't tagged.
Apple has also improved Siri's voice quality, making it sound more natural and less robotic. On the iPhone 17 Pro and above, the expressive voices adjust tone and cadence based on the context — a cheerful tone for casual queries and a more serious one for urgent requests. These improvements are possible thanks to the larger on-device model and the improved Neural Engine in the A19 Pro chip.
The long road to Siri AI
Apple's journey to a competitive virtual assistant has been fraught with delays. The company first teased Apple Intelligence at WWDC 2024, promising a smarter Siri by early 2025. That deadline came and went, leading to growing frustration among developers and users. In a post-earnings call in early 2026, Tim Cook acknowledged the delay, saying the company was "not going to ship a product that isn't ready." Apple later explained that the complexity of on-device AI processing and the need to ensure privacy compliance required more time.
Meanwhile, competitors launched their own AI assistants. Google introduced Gemini integration into Android, and Amazon revamped Alexa with large language models. Even Samsung's Galaxy AI brought smart summarization and image generation to its phones. Apple's strategy, however, has always been more cautious, focusing on privacy and seamless cross-device integration. With Siri AI, the company seems to have finally caught up — and in some areas, surpassed its rivals. For example, Apple's Private Cloud Compute architecture ensures that cloud-processed data is encrypted end-to-end and deleted immediately after processing, a level of privacy that neither Google nor Amazon offers.
What about older iPhones?
Apple's decision to restrict Siri AI to the iPhone 15 Pro and later may frustrate millions of users who bought iPhone 15 or 14 models in recent years. While those phones will receive iOS 27 with security updates and some minor features, they will miss out on the flagship AI capabilities. Apple has not commented on whether future upgrades could make older hardware eligible, but given the Neural Engine improvements and RAM requirements, it's unlikely. If you're planning to upgrade for Siri AI, you'll need at least an iPhone 15 Pro — or better yet, wait for the iPhone 17 series later this year, which offers the best experience.
For now, developers are eagerly awaiting the full beta release of iOS 27 to integrate Siri AI into their apps. Apple has introduced new SiriKit APIs that allow third-party apps to expose more data to the assistant, enabling deeper voice control for tasks like booking rides, ordering food, or controlling smart home devices. The SDK is expected to be available alongside the iOS 27 beta in late August.
As Apple prepares for the fall launch, one thing is clear: Siri is no longer the afterthought of the Apple ecosystem. The new AI-powered assistant represents a significant technical achievement and a sign that the company is finally serious about making Siri genuinely helpful. Whether it's enough to convince users to upgrade remains to be seen, but early impressions suggest that for those with compatible devices, Siri AI will be a game-changer.
Source: Engadget News