What Is macOS 27 Siri AI? New Mac Siri Features, How to Use Them, and Which Models Are Supported

At WWDC 2026, Apple shipped Siri AI alongside macOS 27 Golden Gate. If you still think of Siri as “Hey Siri, set a timer,” the Mac version in macOS 27 is a different generation: conversational, screen-aware, and able to act across apps—reachable from both Spotlight and a dedicated Siri app.

This guide answers four practical questions: what Siri AI is, what’s new on Mac, how to turn it on, and which Macs get which tier of the experience.

What is Siri AI—and how does it relate to Apple Intelligence?

Siri AI is Apple’s next-generation Siri, unveiled at WWDC 2026 on top of an upgraded Apple Intelligence stack—not a chat box bolted onto legacy Siri.

Think in three layers:

Classic Siri was mostly voice shortcuts and short Q&A. Siri AI aims to be a conversational personal assistant: follow-up questions, drag files into the thread, answers grounded in Mail/Calendar/Photos, and—with permission—draft emails or suggested iMessage text. (Apple Newsroom WWDC 2026)

Headline Siri AI features on Mac

macOS 27 embeds AI into search, browsing, and automation—not just a Siri reskin.

1. Siri conversations in Spotlight

On macOS 27, Spotlight (⌘ + Space) recognizes when you’re asking Siri and routes to Siri AI. You can:

• Ask in natural language instead of memorizing phrases
• Drag multiple files into the conversation window
• Continue in a dedicated window after starting from Spotlight

Apple describes this as Spotlight’s assistant mode—the search field doubles as an AI chat entry point. (The Verge on macOS 27)

2. Dedicated Siri app

Like on iOS 27, Mac gets a standalone Siri app to:

• Browse conversation history (synced via iCloud across devices)
• Tune pace and expressiveness (full voice personalization needs the hardware tier below)
• Host longer multi-turn tasks outside Spotlight

3. Personal context and cross-app actions

Siri AI can use in-ecosystem personal data—Messages, Mail, Photos, Calendar—to answer “When did I meet Alex last week?” or “Find that invoice screenshot,” and—with consent—act on your behalf: draft Mail, suggest iMessage text, run Shortcuts automations.

For developers, Apple is pushing App Intents as the modern integration path alongside a multi-year SiriKit transition. (Apple Developer: What’s new in macOS)

4. Visual Intelligence on Mac

Visual Intelligence comes to Mac: ask about what’s on screen, and Siri AI combines the visual with system search indexes.

5. Related Apple Intelligence features in Golden Gate

How to use Siri AI on Mac

Step 1: Hardware and OS

1. Apple silicon Mac (Intel Macs cannot run macOS 27)
2. macOS 27 Golden Gate (developer beta or fall 2026 release)
3. Reserve ~7 GB storage for Apple Intelligence per Apple Support (requirements)

See Which Macs support macOS 27? for the full compatibility list.

Step 2: Enable Apple Intelligence & Siri

1. Open System Settings
2. Go to Apple Intelligence & Siri
3. Turn on Apple Intelligence
4. Ensure Siri is enabled (Hey Siri / keyboard shortcut as needed)
5. Match device language and Siri language to supported locales

Step 3: Three daily entry points

Tips for better prompts

• Name the source: “Draft a follow-up from last week’s client email” beats “write an email”
• Drop files in: PDFs and screenshots for “summarize risk #3”
• Confirm before send: let Siri draft calendar or message changes first
• Pair with Shortcuts: natural-language shortcut building + Siri triggers

Developer testing

Apple opened Siri AI developer testing from the macOS 27 / iOS 27 betas (English first). You need the Apple Developer Program, the macOS 27 beta, and time with macOS release notes plus App Intents migration planning.

Supported Macs: three capability tiers

Running macOS 27 ≠ full Siri AI.

Devices likely on a trimmed Siri AI path include M1/M2 machines and 8 GB configs (including MacBook Neo). They may rely more on cloud tiers. Intel Macs stay on macOS 26 Tahoe with security updates—no Siri AI path without new Apple silicon hardware or a remote Mac.

Region and language

Apple said Siri AI won’t launch everywhere at once while regulatory and localization work continues. Validate in your target locale and language—a working English beta on a personal M4 doesn’t prove enterprise readiness in every market.

IT and developer checklist

• [ ] Test machines across M1 / M2 / M3+
• [ ] Compare 8 GB vs 16 GB configs
• [ ] Exercise Spotlight, Siri app, and voice under target language + region
• [ ] Review MDM policies for Siri / Apple Intelligence
• [ ] Plan App Intents migration for third-party apps
• [ ] Document unavailable features before promising stakeholders

Should you upgrade now?

Good candidates now: M3+ with 12 GB+, developers on App Intents, teams prototyping Spotlight + Siri workflows.

Wait if: you bought M1/M2 or 8 GB RAM specifically for “full Siri AI,” or production stacks aren’t macOS 27-certified yet.

Safer rollout: remote or spare Mac on macOS 27 → pilot one team → company-wide.