Apple registered genai.apple.com on May 24. Eleven days before WWDC, multiple reports confirm iOS 27's rebuilt Siri runs on a custom Google Gemini-based model inside Apple's Private Cloud Compute. iOS 27 also opens system Siri to Claude, Grok, and ChatGPT extensions, ending OpenAI's 2024 exclusive.
Apple picked Google over OpenAI to power the next Siri. Bloomberg, 9to5Mac, and Tom's Guide all confirm. WWDC keynote opens June 8.
iOS 27 Siri runs on a custom Gemini-based model, served through Apple's Private Cloud Compute - so queries don't hit Google servers directly. Third-party Siri Extensions let users wire in Claude, Gemini, Grok, ChatGPT as their default. OpenAI reportedly weighing legal action over how the 2024 partnership got rewritten. Siri gets a dedicated app for the first time. iMessage-style chat bubbles, search history, auto-delete options.
For PMs in consumer and mobile: a billion iPhones become a multi-model AI surface in 90 days. For execs at AI labs: Apple distribution is now a four-way fight. For Apple-stack PMs: assume Gemini is the default fallback and design extension hooks for Claude and ChatGPT.
⚡ Why this matters
- Apple-distribution AI is the largest consumer surface on the planet.
- OpenAI loses the Siri exclusive after 18 months. The PMF lead in consumer just shrunk.
- Multi-model defaults on iOS 27 normalize switching between Claude, Gemini, ChatGPT, Grok at the OS layer.
🔍 What happened
- May 24, 2026. Apple quietly added genai.apple.com to its DNS.
- WWDC 2026: June 8-12. Keynote June 8 at 10am PT.
- Bloomberg's Mark Gurman: Siri rebuilt on a custom Apple model that uses Google Gemini under the hood.
- Serving runs through Apple's Private Cloud Compute, not Google's servers directly.
- iOS 27 introduces Siri Extensions: users can pick Claude, ChatGPT, Gemini, or Grok as the system AI.
- Siri gets a dedicated app for the first time: chat history, iMessage-style bubbles, favoriting, search.
- Auto-delete settings: 30 days, 1 year, or never.
- New gesture: "Search or Ask" system-wide invocation with mic for voice mode.
- Reports: OpenAI considering legal action against Apple over how the 2024 partnership was reworked.
💬 Smart takes
- Bloomberg's Mark Gurman: OpenAI "wasn't interested in working with Apple on the new models because it felt burned by the initial relationship."
- 9to5Mac: the new Siri is "a full chatbot designed to compete with ChatGPT, Claude, and Gemini" - language Apple has avoided for years.
- Skeptic: Apple has shipped slow on Siri since 2024. A keynote announcement is not a ship date. Expect iOS 27 Siri features to land staggered through fall 2026 and spring 2027.
🧭 Where this goes
- WWDC keynote names Gemini as the underlying model on stage. Or doesn't (Apple historically avoids naming partners).
- OpenAI lawsuit filed in Northern District of California by Q3 if reports hold.
- Anthropic ships a Claude Siri Extension within 60 days of iOS 27 GA.
- By 2027, the iOS Settings AI picker becomes the most-watched distribution dashboard in the AI market.
🎯 Implication
- For PMs in consumer and mobile: 1B iPhones become multi-model in 90 days. Plan for users switching default AI per task.
- For execs at AI labs: Apple distribution is a four-way fight. App-clip onboarding inside Siri Extensions is the new install moment.
- For Apple-stack PMs: design API hooks for Claude, Gemini, ChatGPT extensions. Don't lock to one provider.