Level 1 — Absolute Beginner

Apple is a big company. It makes the iPhone and the iPad. Apple has its own helper called Siri.

AI is a new kind of computer helper. It can answer questions and write text. There are many AI helpers: Claude, Gemini and ChatGPT.

Soon, Apple will let people choose. You can pick which AI helps Siri. You can also pick the voice you like.

This new system is called Extensions. It will come with the new iPhone software, iOS 27. Apple will show more details in June.

iPhone

A popular smartphone made by Apple.

Siri

The voice assistant on iPhone, iPad and Mac.

AI

Artificial intelligence — computer programs that can learn and answer questions.

helper

Something or someone that gives help.

voice

The sound a person or computer makes when speaking.

software

The programs and apps that run on a computer or phone.

choose

To pick one thing from a group of things.

company

A business that makes or sells things.

Level 2 — Elementary

For years, Apple has built its own voice assistant Siri using only Apple software. Other AI companies, like Google's Gemini, Anthropic's Claude and OpenAI's ChatGPT, have not been allowed to power Siri directly.

That is about to change. Reports based on people familiar with Apple's plans say the next version of iPhone software, called iOS 27, will include a new system named Extensions. Through Extensions, users will be able to open the Settings app and pick which AI provider handles different smart features.

The new system will work across Siri, Writing Tools that help users edit and rewrite text, and Image Playground for creating pictures. Apple is also testing different voices, so a reply from Apple's own model could sound different from a reply made by Claude or Gemini.

Apple is expected to talk about Extensions at its yearly Worldwide Developers Conference, called WWDC, in June 2026. The change is one of the biggest shifts in Apple's AI strategy since the company first showed off Apple Intelligence in 2024, and it could give iPhone users much more choice.

voice assistant

A program that listens to spoken commands and answers in speech, like Siri or Alexa.

provider

A company that supplies a service, here the company that supplies the AI model.

settings

The part of a device where users change options and preferences.

smart features

Modern features powered by AI, such as text rewriting and image generation.

edit

To change or improve a piece of writing.

developer

A person or company that builds software and apps.

conference

A large meeting where people share news and ideas about a topic.

strategy

A long-term plan to reach a goal.

Level 3 — Intermediate

Apple is preparing what may be the most significant shift in its consumer-AI strategy since the company introduced Apple Intelligence in 2024. According to multiple reports based on people familiar with the matter, iOS 27, iPadOS 27 and macOS 27 will ship with a system internally referred to as 'Extensions' that allows users to plug in third-party generative-AI models — most notably Anthropic's Claude and Google's Gemini — to drive features that have until now run on Apple's own foundation models.

Operationally, the model would mirror Apple's existing 'default app' framework. From the Settings app users will be able to select a preferred AI provider that then handles text generation in Writing Tools, image generation in Image Playground, on-device summarisation, and at least some classes of Siri request. Apple has reportedly built the integration so each chosen provider can specify its own custom Siri voice, allowing third-party answers to sound audibly distinct from Apple's first-party responses.

The new architecture is a clear departure from Apple's historic single-stack approach to platform features. Until now, third-party AI integration has been narrowly framed around ChatGPT as a single 'partner' invoked through Siri hand-off. Extensions in iOS 27, by contrast, opens the underlying Apple Intelligence surfaces to a marketplace of AI providers, who would distribute their integrations through ordinary App Store apps such as the Claude and Gemini iPhone clients.

The change is widely read as a response to two pressures. The first is technical: Apple's own foundation models have been judged by independent benchmark suites as lagging the frontier offerings from Anthropic, OpenAI and Google. The second is regulatory: European and U.S. competition authorities have signalled increasing impatience with single-vendor lock-in on AI features, and a user-facing chooser is a familiar Apple response to such pressure, echoing the default-browser chooser introduced in iOS 17.4. Apple is expected to formally announce Extensions at the Worldwide Developers Conference on June 8, 2026.

foundation model

A very large general-purpose AI model trained on broad data and adapted to many downstream tasks.

default app

The app that the operating system automatically uses for a task such as opening a link or composing email.

on-device summarisation

AI summarisation that runs locally on a phone or computer rather than in the cloud.

hand-off

Here, the act of passing a user request from one system or app to another.

App Store

Apple's online marketplace where users download iPhone, iPad and Mac apps.

benchmark suite

A standard set of tests used to compare the performance of AI models or systems.

single-vendor lock-in

A situation where users are tied to one supplier for a feature, with no real alternative.

Level 4 — Advanced

Apple is on the cusp of the most architecturally consequential shift in its consumer-AI posture since the unveiling of Apple Intelligence at WWDC 2024. Multiple credible reports converging this week — from 9to5Mac, TechCrunch, Business Standard, and AppleInsider, each citing engineers and partners briefed on the plan — describe a system, code-named Extensions internally, that ships with iOS 27, iPadOS 27 and macOS 27 and that permits users to designate third-party generative-AI providers as the back-end engine for a defined set of system-level intelligence surfaces.

Mechanically, Extensions appears to extend Apple's long-standing 'default app' selection paradigm — the same paradigm that, since iOS 14, has allowed users to designate non-Apple defaults for browsing and email — into the model-routing layer that today sits behind Siri, Writing Tools, Image Playground and on-device summarisation. The chosen provider arrives as an ordinary App Store application whose binary registers handlers for a small, Apple-defined set of intent surfaces; routing thereafter is mediated by Apple's existing on-device orchestration, with personally identifiable context redacted or transformed prior to hand-off. Apple has reportedly designed the API so that each provider can ship a distinguished synthetic voice for read-aloud Siri responses, an unusually deferential acknowledgment that the conversational character of competing assistants is a first-class product differentiator.

The strategic context is twofold and tightly coupled. On the technical axis, every credible third-party evaluation of frontier-class general-purpose language models published in 2025 and early 2026 — LMSYS Chatbot Arena, Stanford HELM 2.0, the European AISI evaluation suite — has placed Apple's own foundation-model stack appreciably behind contemporary releases from Anthropic, Google DeepMind and OpenAI. On the regulatory axis, the European Commission's continuing investigation under the Digital Markets Act, paired with the U.S. Federal Trade Commission's revived inquiry into AI competition policy, has made conspicuous user-facing chooser surfaces — rather than negotiated single-vendor partnerships — the path of least antitrust resistance for ecosystem gatekeepers.

The unanswered questions are commercial and political rather than technical. Apple has not publicly disclosed how it will share private-information processing fees, whether providers will pay for system-level placement, or how Apple's Private Cloud Compute architecture will reconcile with the data-handling practices of third-party operators that may not operate equivalent confidential-compute infrastructure. Industry observers expect concrete answers, along with the formal Extensions API surface and an initial list of launch partners, at the Worldwide Developers Conference keynote scheduled for Monday, June 8, 2026, with public betas typically following within hours and a consumer release in the autumn alongside the new iPhone hardware.

model-routing layer

The software layer that decides which AI model handles a given user request.