Siri finally lets you decide which brain answers your questions. With macOS 27, Apple opened the assistant up so you can route Siri's chatbot replies to Claude or Gemini instead of the default ChatGPT, all from one settings panel and without installing a single extra app. If you already prefer how one model writes or reasons, the swap takes less than a minute.

Quick Answer

Head to System Settings, select Apple Intelligence and Siri, and pick Claude or Gemini as the chatbot Siri hands complex questions to. No download, no account juggling inside a separate app. The change applies immediately and you can switch back just as fast.

How the switch works

When you ask Siri something it cannot handle locally, it passes the request to an external chatbot. ChatGPT was the first partner, but macOS 27 introduced a full Extensions system so that handoff can go to Claude or Gemini instead. Apple maintains the same privacy guardrails regardless of which model you choose: Siri asks before sending anything out, and your IP address is obscured from the provider.

Step by step

  1. Select the Apple menu, then open System Settings.
  2. Scroll down and click Apple Intelligence and Siri.
  3. Find the Extensions section where ChatGPT is listed.
  4. Tap the model selector and pick Claude or Gemini.
  5. Sign in to that model's account if prompted, or use the free tier.

That is the whole process. The next time Siri reaches out for a complex answer, it will use the model you chose. For hardware that runs Apple Intelligence without compromise, every Mac in the MacBook range at Evetech carrying an M-series chip is fully supported.

What the Extensions system covers

The Extensions framework introduced in macOS 27 goes beyond just the chatbot picker. Your chosen AI provider can also appear inside Writing Tools, so when you highlight text and ask Siri to rewrite or summarise it, the same model you selected handles that request too. Image Playground and other Apple Intelligence surfaces follow the same preference. The entire experience flows through the one setting rather than needing separate configuration per feature.

Apps that support Apple Intelligence Extensions show up in a dedicated section of the App Store, and Apple provides direct download links for the major providers. Once an app is installed, it registers itself as an available provider and appears in the picker inside System Settings automatically.

Which model to pick

There is no universally right answer. Claude tends to stand out on longer reasoning and careful writing tasks, while Gemini leans into search-connected knowledge and tight integration with Google services. The good news is that changing your choice costs nothing, so try a few of your usual questions through each and keep whichever feels sharper for your work.

You can also switch providers mid-session by returning to Settings -- there is no lock-in. Plenty of buyers compare hardware options first by checking the best-selling laptops to match the machine to how they actually use AI daily.

Privacy guardrails that stay in place

Regardless of which model you select, the confirmation step before any external handoff remains active. Siri will show you what it is about to send and ask for approval before the request leaves your Mac. Your IP address is obscured from the provider so the service cannot link the query back to your location. Only the text of your question travels outward -- Siri does not attach your contacts, calendar, files or other device context unless you explicitly include that detail in the question itself.

Each provider has its own data retention policy for the queries it receives, so if you frequently discuss sensitive topics, reviewing Claude's or Gemini's privacy documentation is worth a few minutes before committing to a daily-driver choice.

Frequently Asked Questions

Do I need to pay for Claude or Gemini to use them with Siri?

Free tiers work for basic use in most cases. Paid plans unlock higher usage limits and newer model versions, but the Siri handoff operates without a subscription at entry level.

Will switching models slow Siri down?

No noticeable difference for everyday use. Siri still handles its own quick tasks locally and only routes the harder questions to whichever external chatbot you selected.

Can I switch back to ChatGPT later?

Yes, the selector is not a one-way choice. Return to Apple Intelligence and Siri in System Settings and pick a different model whenever you like.

Does this work on iPhone and iPad too?

Apple has rolled the chatbot picker across its platforms with the matching OS versions. The Mac steps above mirror what you will find in Settings on a recent iPhone or iPad running iOS 27 or iPadOS 27.

Is my data shared with the AI provider?

Siri asks for confirmation before sending a request out and masks your IP from the provider. Review each provider's own privacy policy if you regularly handle sensitive information.

Want a Mac that handles Claude, Gemini and Apple Intelligence with ease? See the current MacBooks at Evetech and pick the Apple silicon model that fits your workflow.