Claude Duet vs Meta Muse

Quick Answer

Claude Duet and Meta Muse are both personal agents that work from their own cloud computer while you are away, check in when something needs you, and ask before consequential actions. Duet is Anthropic’s cautious, invite-only preview focused on inbox, documents, and small-business admin. Muse is Meta’s publicly available consumer agent with a free tier, aimed at everyday errands and shopping, and reachable through WhatsApp.

The ecosystem question matters as much as the features. Duet extends the Claude account you already use, with its memory, skills, and connectors. Muse lives inside Meta’s world, with its own app and data practices.

At a Glance

Autonomy and Background Work

Both run on cloud machines, so your devices can be off. Duet works on a rhythm: a short morning brief, then checks of connected accounts every few hours, messaging you only when something needs attention. Anthropic is upfront that urgent items can arrive between checks.

Muse is organized around goals. You describe what you want, Muse helps turn it into a plan, then works on it and returns when something changes or it needs approval. Meta emphasizes unprompted suggestions based on what Muse learns about you, which is useful and also the source of most privacy concerns.

Connected Services

Duet inherits everything you have set up in Claude: memory, skills, and connectors, with Anthropic citing more than 6,000 connectors and plugins. Gmail, Google Calendar, Drive, QuickBooks, HubSpot, Docusign, and Calendly are named, Slack works with limits, and Microsoft 365 is not available yet. For sites without a connector it uses a cloud browser, but you cannot watch it.

Muse connects services one at a time, with access levels per service, such as read-only email versus read-and-send. Meta lists categories from email and calendars to payments, health, smart home, dining, and shopping. If a service has a public API, you can connect it with your own credentials; otherwise Muse uses its browser.

Approvals and Money

Both use authorization gates on consequential actions. Duet’s are fixed and strict, and it adds hard limits that hold even if you approve: no securities trades, no moving money between accounts, no accessing someone else’s account. Muse asks before sensitive actions and keeps an audit trail of what it did and plans to do.

Both pay through Link with single-use cards. Duet adds Shop Pay; Muse adds Link’s purchase protections, such as coverage for lost items and returns on eligible purchases.

Privacy

Duet uses a classifier to block outgoing requests that would share the most sensitive data, shares health and finance details only when you explicitly ask, and treats web and email content as information, not instructions, while acknowledging that prompt injection is still a risk.

Muse lets you opt out of training (check it, since it appears to be on by default), says it does not share conversations or VM data with Meta’s ad systems, and promises a Confidential VM later in 2026 that would encrypt everything with a key only you hold. Its Sentinel agent, which must approve internet access, is a meaningful design choice, but independent security review is still limited.

Cost

Muse is cheaper to start, with a free tier and a usage meter. Duet has no extra fee during the preview, but uses your Claude plan’s five-hour and weekly limits, including for background checks. On Claude Pro that can squeeze your other Claude use.

Personal vs Business Use

For personal errands, shopping, and family logistics, Muse is the more natural fit and the easier one to get. For keeping on top of business email, invoices, contracts, and scheduling, Duet’s connector set and stricter limits suit the work better, if you can get in. Muse for Small Business (US and Canada) narrows that gap with connectors like Slack, Notion, Shopify, Stripe, QuickBooks, and Canva.

Choose Claude Duet If

You are a US Claude Pro or Max subscriber, you already rely on Claude’s memory and connectors, your work is mainly email, documents, and admin, and you want strict fixed protections around money.

Choose Meta Muse If

You want a free or low-cost personal agent available now, you use WhatsApp, your tasks are errands, bookings, and purchases, or you are in Japan or outside Duet’s waitlist.

When Neither Is Ideal

If you need Microsoft 365, live monitoring, or an agent you can watch working, OpenAI Dots is stronger on those points. If you want to control where data lives, a self-hosted agent like OpenClaw is the alternative.

Final Recommendation

These two are less direct competitors than their marketing suggests. Duet is a careful extension of Claude for people who already pay for it. Muse is the accessible consumer option with bigger privacy questions to settle. Choose the one that sits inside the ecosystem you already trust with your data, and keep approvals on.

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Background: proactive agent, approval policy, and AI data retention.