Apple Replaced Siri with Gemini — The Inside Story of iOS 26.4
In iOS 26.4, Siri has been fully replaced by Google's Gemini 1.2 trillion parameter model. Apple signed a $1 billion annual deal, and here's how they maintained privacy through Apple Private Cloud Compute — and what actually changes.
Apple Intelligence isn't going away. Features processed on-device stay as they are. Text autocomplete, notification summaries, image editing, and personal data processing all fall into this category.
The division of labor becomes clear. Simple tasks are handled quickly on-device by Apple Intelligence. Questions that require complex reasoning are handled by Gemini in the cloud. Users don't need to worry about this distinction. Siri routes it automatically.
Complex questions that used to go to ChatGPT now go to Gemini. Whether ChatGPT integration will be maintained is still undecided. It should become clear once the policy is announced after iOS 26.4 releases.
· On-device → Apple Intelligence (personal data, fast response, privacy-first)
· Cloud → Gemini 1.2T parameters (complex reasoning, up-to-date info, multimodal)
· Boundary decision → Siri's internal routing logic decides automatically
What Actually Changes
Weather, timers, and music playback stay the same. They're handled on-device. What changes is the response to complex questions. These used to throw errors or return only web search results.
Drafting long emails, organizing meeting schedules, and analyzing documents become possible. Context retention length also changes. It remembers earlier parts of the conversation even after multiple exchanges. Thanks to Gemini's long context window.
Shortcuts app integration also changes. AI reasoning can be used in automation workflows. From a developer's perspective, SiriKit API capabilities expand. Apps can invoke Gemini-level reasoning through Siri.
Old Siri vs. Gemini-Powered Siri Comparison
| Item | Old Siri | Gemini-Powered Siri |
|---|---|---|
| Base Model | Apple's own LLM | Google Gemini 1.2T parameters |
| Complex Reasoning | Limited | Capable |
| Context Retention | Short | Extended conversation possible |
| Multimodal | Mainly text and voice | Text, image, audio, video |
| Data Processing | Apple servers | Apple Private Cloud Compute |
| Release | Current | After iOS 26.4 |
| Contract Cost | — | $1B/year (Apple → Google) |
AI Assistant Competition Landscape
The AI assistant market is reshuffling fast. Samsung integrated Google Gemini into Galaxy AI in part. Microsoft integrated Copilot into Windows and Office. Now Apple is starting to use Google AI too.
OpenAI's standalone app position has become more important. If Siri switches to Gemini, ChatGPT gets pushed out of OS-level integration. Which model takes the default assistant slot has become the central competition in the AI ecosystem.
| Assistant | Base Model | Devices | Features |
|---|---|---|---|
| Siri (iOS 26.4+) | Gemini 1.2T | iPhone, iPad, Mac | Private Cloud Compute |
| Galaxy AI | Gemini (partial) | Samsung Galaxy | On-device + cloud hybrid |
| Copilot | GPT-4o family | Windows, Office | Specialized for documents and work tasks |
| Google Assistant | Gemini | Android, Pixel | Google ecosystem integration |
What to Make of iOS 26.4 and Beyond
Apple hasn't completely abandoned its own AI. Apple Research continues to develop models. But for immediate Siri experience improvement, they chose the best model available. It's a pragmatic call.
Gemini 1.2T might fall short of expectations. Some of Siri's weaknesses were in system integration rather than the model itself. I'll need to check this directly after iOS 26.4 releases. Below are criteria for choosing an assistant by situation.
| Situation | Recommendation | Reason |
|---|---|---|
| Quick simple tasks | Siri (on-device) | Local processing, instant response |
| Complex questions and reasoning | Siri (Gemini) | 1.2T parameter model |
| Long document writing | ChatGPT / Gemini app | Rich editing interface |
| Personal data analysis | Siri (Apple Intelligence) | On-device, privacy |
| Code writing | GitHub Copilot / Claude | IDE integration specialized |
Frequently Asked Questions
Q. Does Siri completely disappear in iOS 26.4?
The Siri brand stays. The structure changes so that Google Gemini handles complex reasoning and language understanding. Users still say "Hey Siri." Gemini just handles it internally.
Q. Does using Apple Private Cloud Compute mean data doesn't go to Google?
That's correct. Apple Private Cloud Compute is an encrypted server infrastructure that Apple operates directly. Google can't access the original query. The query is passed to the Gemini model in encrypted form and only the result comes back.
Q. What is the structure of the $1B/year contract?
Reports indicate Apple pays Google $1B per year for Gemini API usage. This is separate from the existing Safari default search engine contract (worth around $20B/year). The two contracts run independently.
Q. Can Apple Intelligence still be used?
Yes. Apple Intelligence's on-device features stay intact. Text autocomplete, notification summaries, and image editing are processed on-device. Gemini only handles complex reasoning queries.
Q. When does iOS 26.4 release?
The exact release schedule hasn't been announced. The second half of 2026 seems likely. Details and features are expected to be announced at Apple WWDC 2026.
Apple's decision this time is a realistic choice. It's better to use the best model available than to fall behind building your own. It's the same logic as Samsung putting Gemini in Galaxy AI. They chose product quality over pride.
I plan to try Gemini-powered Siri firsthand after iOS 26.4 releases to see how it actually works. Everyday usage experience matters more than benchmarks. I'll update with actual test results later.
· Apple Private Cloud Compute Overview — security.apple.com
· Bloomberg: Apple-Google Gemini deal report (April 2026)
· The Verge: iOS 26.4 Siri replacement details (April 2026)
The information in this article is based on reports at time of writing. Specifications may change after product release.
Last updated: April 12, 2026