Muse vs Instinct: which AI agent should you trust with your money?

Muse and Instinct are both personal AI agents: you ask, and they act. Both can book reservations, shop and handle errands by connecting to your accounts. They differ in who builds them, how you reach them and how much they tell you about their controls.

Muse is Meta's agent, launched to US users on September 8, 2026. It lives in its own app and WhatsApp, connects to email, calendar and payments, and can also work inside Meta's products. TechCrunch notes it can monitor Instagram DMs, summarize Facebook Groups and watch Marketplace listings.

Instinct is a startup agent you text or call. When you give it a task, it uses its own phone number and computer, and it can now phone businesses for you. It opened as an invite-only service in August 2026 and raised a $1 billion Series C at a $10 billion valuation weeks later, but it had not shared user numbers as of late September.

Muse has the more detailed public rulebook. Meta says Muse always asks before completing a purchase, and you can set it to ask before every action or before write actions and important read actions. Passwords sit in a credential store the AI model cannot see, and Meta says key security checks run separately from the model, so a malicious instruction hidden in an email does not rely on Muse spotting it.

Instinct's protections are thinner on paper. Stripe says Instinct payments run through Link, where you approve what it spends and your card details stay protected. But Instinct's terms only say it may add confirmation steps to some actions, with no promise they will prevent mistakes. They also appoint Instinct as your agent, so agreements it accepts for you are binding, and any purchase dispute is between you and the merchant.

Both companies put responsibility on you. Meta's help center says you are responsible for every transaction Muse makes, and Instinct's terms say the same about every action, financial or otherwise. Our guide on whether Meta Muse is safe with your money covers the Muse settings to change first.

Muse is the easier one to try. It is open to US users, free to start with a payment card on file, and moves to $20 or $100 a month as usage grows. The app shows a usage meter and warns you when free usage runs out.

Our Meta Muse review covers what each Muse plan includes and how far the free plan goes. Our Instinct AI review covers how to get access and how Instinct performs on real errands.

Instinct costs nothing right now, but you may wait. It is invite-only, admitting people through a waitlist and member invites, and has published no wait time. It has published no price, and its terms say future fees for paid features are non-refundable.

Muse: Reuters reported on launch day that Meta's internal tests showed it exposing sensitive data without authorization. Tom's Hardware later covered a reporter's finding that the Mac app synced his Messages database without permission. CNBC reports Amazon blocked Muse from shopping on its site.

Instinct: in its first week, TechCrunch documented testers finding it still summarizing email after they disconnected Gmail, pulling a sign-up code from an inbox to finish a booking, and sending an email without checking first. Instinct has since revised its terms and privacy policy. In late September, Business Insider reported users noticing slower responses.