Claude Duet is Anthropic’s cautious answer to Meta’s Muse, and it asks before it acts

The Verge reports that Anthropic has released Claude Duet, a personal agent built on Claude Opus 5.5 and aimed at professionals and small business owners. It is a research preview on iOS, Android and the web. Duet sends a morning brief across the apps a user connects, keeps watching them during the day, and takes on work ranging from scheduling to sales forecasts, dashboards and simple web apps. For tasks that need the web, it uses a virtual machine with a browser. It draws on memory, skills and connected apps from the main Claude product, and Anthropic says it messages users only when something needs attention rather than streaming constant updates.

With Meta’s Muse and OpenAI’s Dots already available, each major lab now has a personal agent in market. The question has moved from whether agents work to whose design people will trust with their accounts. Meta reports more than 10 million Muse users.

Meta has pushed Muse toward consumer shopping and, more recently, small businesses through integrations with Shopify, Slack and QuickBooks (Muse for Small Business). Duet goes straight at work: inbox triage, calendar shuffles and the forecast a small business owner never has time to build. That is where an agent can save real hours, and where carefulness sells rather than slows things down. The underlying model helps the pitch: Anthropic said Opus 5.5 delivers Fable 5.1-level work at about 40 percent lower running cost than Opus 5 (our Opus 5.5 coverage).

Duet messages the user for approval before consequential steps such as sending a payment or deleting something. Anthropic also says a new dedicated classifier and safety system prompt are meant to reject requests to share the most sensitive tier of information, such as credit card numbers. For an agent sitting on top of email and business tools, where one misread message could leak data or move money, that is the right instinct.

Anthropic is unusually frank about limits. It says Duet is an early version that may misread a thread or misjudge urgency, and that it is weaker at personal errands like booking tickets. Candor is welcome, but it is not a control. An agent that misjudges urgency can bury the one email that mattered, and approval prompts only help if people read them instead of reflexively tapping yes. Three weeks later, a Verge hands-on found exactly that mix of strengths and misjudgments (A week with Claude Duet).

A U.S.-only waitlist for Pro and Max subscribers limits harm while the product matures. It also means early impressions will come from power users, not the small shops Duet is ultimately for. The real test is whether Duet stays cautious once it competes on convenience against agents that ask fewer questions. See all of our agents coverage.