Apple's rebuilt Siri AI expands to Apple Watch in watchOS 27

Apple's completely rebuilt Siri AI — unveiled at WWDC 2026 and, per Perplexity-sourced reporting, powered by Gemini alongside on-device processing — is expanding to Apple Watch in watchOS 27, turning the wearable into what 9to5Mac called 'a fully-fledged AI wearable.' Early reviewers running hands-on comparisons against Google's Gemini said Apple genuinely impressed them after years of being seen as the AI laggard, with more expressive voices and markedly improved systemwide dictation accuracy.

The rollout also surfaced hardware signals: the assistant's on-screen shape in the iOS 27 beta hinted at a smaller Dynamic Island design change for the iPhone 18 Pro. Apple confirmed at WWDC that its most capable AI model — the one driving the expressive Siri voices and dictation gains — requires 12GB of unified memory, which the standard iPhone 18 will reportedly ship with to support full Apple Intelligence features on-device.

The community reframing is the real story. Business Insider's roundup of 'what smart people are saying' captured the shift: 'Siri AI is basically what most consumers use ChatGPT and Gemini for — RIP consumer ambitions for AI companies,' though skeptics called Apple's AI narrative 'scattershot.' Apple's distribution — a billion-plus devices — means an orchestrator-grade Siri could absorb the consumer assistant use case that OpenAI and Google have spent years cultivating.

The dependency twist: if Siri AI leans on Gemini for heavy lifting, Apple is simultaneously a threat to and a customer of Google. That makes the partnership both a competitive moat and a strategic vulnerability. Watch the watchOS 27 and iOS 27 public releases for whether the polished demos hold up in daily use.