Issue 009 · 08 June 2026 · AI Strategy

Siri, but make it Gemini.

Apple just outsourced Siri's brain to Google for roughly $1 billion a year. The polite British analysis — what it means for Apple users, what it costs, when it ships, and how it stacks up against the rest of the assistant zoo.

$1B/yr
Apple pays Google
Custom 1.2T-param Gemini, multi-year deal
Bigger than Apple's own
vs the 150B model running on Private Cloud Compute
Sep 2026
iOS 27 launch
Full conversational Siri, alongside iPhone 18
£0
Cost to the user
No subscription. Apple absorbs the licensing fee.
01 · The deal

What Apple actually bought.

On 12 January 2026, Apple and Google jointly confirmed what Bloomberg's Mark Gurman had been whispering since November: a multi-year partnership in which Google's Gemini becomes the engine under the rebuilt Siri and the next wave of Apple Intelligence features. Reported value, roughly $1 billion a year; total contract value up to $5 billion over its term.

The model Apple licensed is a custom 1.2 trillion-parameter mixture-of-experts Gemini — about eight times larger than the 150-billion-parameter models Apple had built in-house. Apple reportedly approached OpenAI and Anthropic first. OpenAI declined the terms. Anthropic was deemed too expensive. Google, as ever, stayed at the table with the chequebook open.

The three-tier routing

Tier 01 · Device
On-iPhone, Apple model
Timers, dictation, app launch, "remind me to ring my mother." Stays on the silicon in your pocket. No cloud touched.
Tier 02 · PCC
Apple Private Cloud Compute
Mid-complexity work. Apple silicon servers, stateless, encrypted. Apple-owned end to end.
Tier 03 · Google Cloud
Custom Gemini on Nvidia B200
Long-context reasoning, conversation, world knowledge. Google's brain, Apple's contract terms.

The contractual interesting bit: Apple has reportedly negotiated that Google cannot train future Gemini models on Apple user queries, processing is stateless and ephemeral, and the only payload crossing the wire is what Apple chooses to send. Whether that holds under regulator scrutiny is a separate matter — Bloomberg's antitrust desk and the lawyers at Cleary Gottlieb are already sharpening pencils.

02 · The timeline

When you actually get it.

  • Spring 2026 — iOS 26.4. First wave of Gemini-powered features. Better answers, on-screen awareness, the personal-context promise that slipped from 2025. A polish release dressed up as a relaunch.
  • September 2026 — iOS 27, alongside iPhone 18. "Conversational Siri" lands. Back-and-forth dialogue across 20+ exchanges, multi-step task chaining ("book me a table near the office, text Sarah the address, add it to my calendar — Italian, not Thai"), and World Knowledge Answers, the new search layer aimed squarely at Perplexity and ChatGPT.
  • For the avoidance of doubt — if your iPhone is older than the 11, you're not invited. Apple has confirmed iOS 27 cuts the 11. Tough.
"Apple has spent fifteen years selling privacy and self-reliance as the product. The deal is therefore an interesting branding manoeuvre — in roughly the same way that a vegan opening a steak restaurant is an interesting branding manoeuvre."
— AI Sustained · Issue 009
03 · The cost

What it costs you, the Apple user.

Most coverage gets this part wrong. It costs you nothing extra. Apple pays Google the billion. You pay Apple by, well, being an Apple user — buying iPhones, renewing iCloud, leaving an organ in the App Store. The Gemini layer is bundled into Apple Intelligence, which is bundled into iOS, which is bundled into the device.

Which is also the worry. Anything you don't pay for directly tends to be paid for indirectly — in defaults, in lock-in, or in the slow renegotiation that happens next time your operating system upgrades.

How it stacks up against the rest of the assistant zoo

Assistant
Cost
Where it wins
Siri-on-Gemini
£0 incremental
Deep iOS integration, on-screen awareness, app action chaining. The only assistant with root-level reach into your Apple apps.
ChatGPT (GPT-5.2)
$8 / month
Best-in-class voice. Most emotionally expressive conversation. Weakest device integration outside the browser.
Gemini Live
Google One AI Premium
Maps, Gmail, Calendar — brilliant if you live in Workspace. Available on Pixel and the web.
Alexa+
$19.99 / month (free w/ Prime)
Smart home, Amazon shopping, Echo Show. Best in the kitchen, worst in the car.
Microsoft Copilot
$20 / month Pro
Owns Office 365. Genuine 10× for spreadsheet and email work. Voice is competent, not delightful.

The price isn't the differentiator. The integration is.

04 · The differentiator

What will make Siri-on-Gemini stand out.

  • App action execution. No competitor can reach inside third-party iOS apps the way Siri can, because no competitor is iOS. If Apple's App Intents framework finally behaves — the bit that quietly killed Siri 2.0 in 2025 — Siri does things the others can only talk about.
  • On-screen awareness without the screenshot dance. "Send this to Mike" should mean this thing on the screen right now. Gemini Live can almost do this on Pixel. ChatGPT can do it if you point a camera at the screen. Siri can do it because it has root-level rights to the OS.
  • The privacy wrapper. Whether you trust it is up to you, but Private Cloud Compute is the strongest commercially deployed claim around — stateless processing, Apple-controlled silicon, no Google training rights. No other assistant can make all three claims at once.

What it won't stand out on is raw conversational charm. ChatGPT Advanced Voice is still the most natural-sounding thing in the room. Siri-on-Gemini will be capable. It will not be charismatic.

05 · The awkward bit

Three flavours of awkward.

  • Antitrust. Under the EU's Digital Markets Act, both Apple and Google are designated gatekeepers. The Commission has already opened a preliminary assessment. The UK's CMA is reportedly watching. The Microsoft–Netscape analogies write themselves.
  • Strategic dependency. Apple is now reliant on a competitor for the conversational layer of its flagship OS. If Google deprecates the model, raises the price, or simply gets bored, Apple has a problem that costs more than $1 billion a year to solve.
  • The marketing line. "Siri now uses Google's brain, but don't worry, we're not sharing your data with them" reads better in a privacy whitepaper than on stage at WWDC. Cook handled it gracefully. The Apple obsessives on Reddit are less convinced.
06 · Two readings

What I think.

The bullish reading: Apple did the smart, expensive thing. Didn't ship a half-built model. Didn't keep promising. Wrote a cheque, plugged in a better engine, kept the body of the car. The new Siri will be the most-used AI assistant in the world by Christmas — there are 1.4 billion iPhones in pockets and most owners will be using it without realising the model is Google's.

The bearish reading: this is the moment Apple admitted it lost the model-layer race. Hardware stays Apple. OS stays Apple. Brand stays Apple. The actual intelligence in Apple Intelligence is leased. Defensible business model for ten years; precarious one for thirty.

If you're an iPhone user, the practical question isn't which reading wins. It's whether the assistant in your pocket finally does the thing you've been asking it to do since 2011. By all early accounts, the answer this autumn is — yes, mostly. Which, after fifteen years, will do.

Tactical Takeaway · for leaders

Three things worth doing before iOS 27 ships.

01 · Audit

Inventory the App Intents your business apps expose. Siri-on-Gemini will only be useful to your customers if your apps are reachable. Most aren't.

02 · Policy

Update your AI-use policy to name three assistants, not one. Staff will use whichever is closest to the task. Pretending otherwise is theatre.

03 · Risk

Log Gemini as a sub-processor in your data map. Apple's privacy wrapper is strong; your compliance officer still needs the paperwork.

Companion long-form

Read the full Substack version.

Same argument, more evidence trail, full source list, and the bits the article didn't have room for.

Read on Substack →