The brain of the iPhone now lives at Google

At today's WWDC, Craig Federighi announced from stage that the new Siri would run on a Gemini model with 1.2 trillion parameters, customized by Google. For three years, Apple sold Apple Intelligence as an in-house, on-device, private, vertical strategy. That strategy is dead. The brain of the new Siri is now hosted at the direct competitor, on Nvidia cards, inside Google Cloud data centers.

This is Tim Cook's last keynote as CEO. He becomes executive chairman on September 1. The most secretive and most vertical firm in Silicon Valley closes its Cook decade with the admission that it no longer runs its own AI by itself.

What vertical integration used to mean

In 1997, on his return to Apple, Steve Jobs laid down a phrase that shaped twenty-five years of the company: we have to own the whole widget. Hardware, operating system, key apps, distribution. Everything under one roof. The opposite of Microsoft, which outsources hardware, and of Google, which outsources Android distribution.

That vertical integration became both the sales pitch and the in-house pride. The most relentlessly repeated ad line of the past decade is not a product message, it is an identity promise: Privacy. That's iPhone. Your data stays with you because Apple controls the entire chain.

Apple Intelligence, announced at WWDC 2024, was supposed to be the natural extension of that line. An Apple LLM, trained by Apple, run on Apple Silicon, mostly on-device. The new Siri was the centerpiece: natural conversations, contextual memory, multi-step actions across apps. Polished demos. Shipping target: iOS 18, late 2024.

The timeline of a failure that didn't dare speak its name

iOS 18 shipped in September 2024 without the new Siri. iOS 18.2, in December, delivered the ChatGPT integration, the only real Apple Intelligence AI feature that worked, and it didn't come from Apple. Smart Siri was pushed to spring 2025. Then late 2025. Then 2026 with no date.

In a late-2024 9to5Mac interview, Craig Federighi explained that the team had built a "V1" architecture shown at the demo, and that it did not meet Apple's quality bar. The V2, a deeper end-to-end architecture, needed more time. At WWDC 2025, Federighi made the same admission, more briefly: it works internally, it doesn't ship publicly. Not good enough.

A late-2025 meeting settled things. Federighi, software boss, Mike Rockwell, head of the Siri team, and Eddy Cue, head of services, decided to evaluate an external partnership. Apple ran an internal RFP between OpenAI, Anthropic and Google. Google won.

On January 12, 2026, joint Apple-Google statement: Gemini would become the cognitive engine of the new Siri. Amount reported by Bloomberg: roughly one billion dollars a year. The contract is annual and renewable.

Today, at WWDC, that deal becomes the product. Three-tier routing: simple queries stay on-device on Apple models, intermediate ones run on Private Cloud Compute on Apple Silicon, heavy reasoning queries are sent to Google Cloud on Nvidia Blackwell B200 GPUs. Inputs are encrypted in GPU memory during processing. The contract bars Google from using the queries to train its future models. Technically clean. Symbolically, a tipping point.

What it says about the LLM market

Apple has 200 billion dollars in cash. Apple has Apple Silicon, the best-managed supply chain in the world, and probably the best hardware engineering team on the planet. Apple still walked away. Not from AI, but from building its own frontier model.

That data point deserves to be weighed. The barrier to entry for frontier models is no longer talent, data, or trade secrets. It is cumulative compute and long-term investment in ten-billion-dollar GPU farms. OpenAI, Anthropic and Google started in 2018-2019. Apple started seriously in 2023. The gap became impossible to close, even with 200 billion in cash, in two and a half years.

The same question applies to the rest of the market. Mistral raised one billion euros. European hyperscalers combined do not match a third of Google Cloud's annual capex. When the best-capitalized hardware company in the world publicly admits it cannot keep up, the conclusion doesn't need much commentary.

The Privacy promise takes a nick

Apple will hammer on three-tier architecture, GPU encryption, the no-train clause, token-level anonymization. All of it is true. Simple queries stay on-device. Apple Maps, notification aggregation, short mail summaries: Apple Silicon, local, as advertised. On that perimeter, Privacy. That's iPhone. still holds.

The issue lies elsewhere. The queries that justify having an AI assistant in 2026, the real ones, multi-step reasoning, long context, source crossing, are exactly the ones routed to Google. Not in the clear, not for training Gemini, but they leave nonetheless. The marketing promise hammered since 2019, that your data does not leave the iPhone, becomes a promise with clauses. Apple will not feature that in its next ads.

Meanwhile, OpenAI is preparing legal action. Bloomberg documented this on May 14. The Apple-OpenAI partnership, launched with fanfare in June 2024, has soured. ChatGPT was never really integrated into Siri: explicit invocation by name, no memory, no custom GPTs, no voice mode. The revenue OpenAI expected never showed up.

iOS 27 now opens an Extensions system where ChatGPT, Claude and Gemini become interchangeable for the user, and Apple takes a cut on subscriptions. The App Store playbook applied to conversational AI, with the same commission logic.

Samsung made that call as early as January 2024, switching to Gemini by default on the Galaxy S24. But Samsung never sold an identity of vertical integration. Samsung assembles. Apple integrated. The symmetry is deceptive, and that is precisely what makes today's flip heavier than a joint statement suggests.

Apple spent twenty-five years explaining that controlling software and hardware together was worth more than anything. Today, the brain of its flagship product is outsourced to the competitor that also owns Android. Apple's vertical integration was a religion. It has a new god.