Microsoft Copilot vs Siri AI

How the two compare on price, platforms, what they can act on and how they ask before acting. Facts come from each agent's sources page.

Microsoft CopilotSiri AI
MakerMicrosoftApple
Cheapest paid plan$19.99/month (Microsoft 365 Premium, US)Not stated
Free tierYes: free Copilot chat within usage limits; agents and multi step tasks need a Microsoft 365 subscriptionYes: available on Apple Intelligence enabled devices, with daily usage limits on features that use server models; Apple says expanded access will be offered for a fee in the future
PlatformsWebWindowsmacOSiOSAndroidiOSiPadOSmacOSwatchOSvisionOS
Can act onBrowserEmailFilesCloud storageWindows settings and apps (announced for Copilot+ PCs)EmailMessagesCalendarRemindersPhotosThird party apps
Approval modelMicrosoft says Copilot asks for approval or hands control back before sensitive actions, and users can stop, pause, take control of or delete a task. On Windows, local context and actions are described as working with the user's permission.Not stated
LaunchedSep 25, 2026Sep 14, 2026
Last updateOct 7, 2026: Copilot gets Windows hybrid intelligenceSep 14, 2026: Siri AI released in beta

See sources on the Microsoft Copilot and Siri AI pages.

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