Meta is pushing Muse beyond answering questions and into the work happening on your computer. The company’s AI assistant is now available on Mac, where it can interact with files, messages, calendar, notes, and mail inside their native applications.
That shift changes the contest around AI assistants. Muse is not only generating text or retrieving information; it can organize files, fill out forms, pull details from apps, and place calls to U.S. businesses. The team behind it is moving fast, and the next phase of the assistant race is already taking shape.
Muse Brings Hands-On Help to Mac
Meta announced Muse on Mac on September 17, 2026, following the earlier launch of Muse on mobile and web. The desktop app gives Muse access to everyday tools that many people already use for communication, planning, documents, and personal information.
Muse can work with files, messages, calendar entries, notes, and mail within their native applications. That means users can ask it to organize files, fill out forms, or pull information from Messages, Calendar, and Notes instead of moving between each app by hand.
Control remains with the user when an action carries more risk. The app will always ask for user approval before performing sensitive actions, adding a clear checkpoint between an instruction and the action itself.
That approval step matters because Muse is moving from conversation into execution. An assistant that can find a note is useful; an assistant that can connect information across apps and act on it becomes part of the computer’s workflow.
Calling Becomes the New Battleground
Muse’s Mac launch arrived alongside a major expansion in AI calling features. On September 16, 2026, Muse’s beta expanded for outbound calls to U.S. businesses, prioritizing people who had asked to receive the feature first.
“we just expanded the @Muse beta for outbound calls to US businesses, prioritizing folks who’d asked their Muse to let us know they wanted it first 🙂 if you’re in, give it a shot and tell us what you think. phone calling was one of our top requests and your feedback helped make…” said Ryan Fox.
Instinct, a rival AI agent, added its own calling feature on September 17, 2026, creating direct competition between the two services. Called Instinct Concierge, the feature can handle tasks such as booking restaurants without online reservations, getting on a dentist’s cancellation list, and sorting out cable bill problems.
Noah Shinn, the founder of Instinct, described the service this way: “Your Instinct can now handle phone calls. Introducing Instinct Concierge – a white glove service meant to handle high-touch cases, such as making phone calls, high-end service booking, and more.”
Instinct Concierge is rolling out in early access to some users, with plans to expand. With Muse also able to place calls to U.S. businesses, the calling features of Instinct and Muse are now in parity.
Downloads Show Immediate Consumer Interest
The early numbers give Meta’s new assistant a strong opening. Muse reached over 730,000 downloads in the U.S., outgrowing the Meta AI app launch in its first few days.
Sensor Tower counted 707,000 downloads for the Meta AI app in its first five days. The comparison puts Muse ahead of that mark and gives Meta a clear signal that users are willing to try an assistant built to perform tasks across their devices.
Money is also flowing toward the companies building these agents. Instinct raised $350 million at a $2.5 billion valuation last month, and the company is in talks to raise $1 billion at a $10 billion valuation.
Mark Zuckerberg captured Meta’s pace in a short statement: “The team is shipping fast.” Muse’s move to Mac, its access to native applications, and its calling feature all support that claim.
The next question is how much work users will hand over. As Muse and Instinct compete on calling, app access, and task completion, approval controls and useful execution may matter as much as the quality of their answers. The assistant that turns more requests into finished tasks will have the strongest claim on the desktop.
There is also a separate deadline on the tech calendar: September 18, 2026 is the last day to book an exhibit table at Disrupt, with tickets 25% off now.
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