# Claude Duet — Skills & Case Studies

Anthropic's Claude Duet, announced October 21, 2026, is the proactive agent that comes to you: a morning brief from your connected apps, background work on its own cloud computer, and approval gates before it sends, pays, signs, or deletes. It is a research preview for US Pro and Max subscribers — powerful, waitlisted, and still learning what counts as urgent.

## Skills

- Proactive Morning Brief Designer: A morning brief worth opening — and nothing it should not have sent (https://aiservicesmarket.lol/skills/proactive-morning-brief-designer/)
- Agent Approval Gate Playbook: What your agent may do alone, what it drafts, and what it never touches (https://aiservicesmarket.lol/skills/agent-approval-gate-playbook/)
- Background Task Budget Planner: Background checks eat your plan limits — budget them before they do (https://aiservicesmarket.lol/skills/background-task-budget-planner/)

## Case studies

- The Agent That Comes to You: On October 21, 2026, Anthropic opened a research preview of Claude Duet: a standalone app where Claude works as a proactive agent on its own cloud computer, sends a morning brief, checks connected apps every few hours, and asks before it sends, pays, signs, or deletes. Access runs through a waitlist for US Pro and Max subscribers, built on Claude Opus 5.5.
- Four Labs, One Race: The Proactive-Agent Summer: Duet did not arrive alone. In seven weeks, four labs shipped always-on agents: xAI's Grok Bot in August, Meta's Muse on September 8, OpenAI's Dots on September 29, and Duet on October 21 — and on October 23, Muse expanded to Japan, its first market outside North America. The contest is no longer about who has the smartest chatbot; it is about whose agent you trust with your inbox while you sleep.
- Work First: The Customers Anthropic Chose to Show: Anthropic pitched Duet at professionals and small-business owners with too much to track, and its launch examples showed why: a restaurant group running accounting, support, marketing, and invoices across locations, and a brand strategist whose agent built a client briefing from her calendar. The same coverage carried Anthropic's own caveats — periodic check-ins, misjudged urgency, and background work that burns plan limits.

## Frequently asked questions

### What is Claude Duet?

Anthropic's proactive AI agent, announced October 21, 2026 as a research preview. Unlike a chatbot that waits for your question, Duet checks your connected apps, brings forward work that needs your attention, and completes tasks you delegate — then asks before it sends, pays, signs, or deletes anything. Related skill: Proactive Morning Brief Designer.

### Who can use Claude Duet right now?

At launch, access runs through a waitlist for Pro and Max subscribers in the United States. Team and Enterprise plans are not included in the preview yet, though Anthropic says it plans to expand availability later.

### What model powers Claude Duet?

Claude Opus 5.5. Duet carries over the memory, skills, and connected apps from your Claude account, so there is little setup beyond connecting the apps you want it to watch.

### What does the morning brief look like?

Each morning Duet sends a short brief on the most important items across your connected apps, then checks back every few hours and alerts you when something needs attention. Our brief-design skill turns that shape into a spec you control: Proactive Morning Brief Designer.

### What can Duet actually do?

Schedule meetings, draft replies for approval, prepare payroll information for review, find unpaid invoices and draft reminders (QuickBooks, Stripe), follow up on deals (HubSpot), build forecasts and dashboards, and build simple web apps. Finished work lands in a Make tab for review and editing.

### What must Duet ask before doing?

Before it sends a message, makes a payment, signs a document, or deletes a file. Our approval-gate skill turns that promise into a written matrix with thresholds: Agent Approval Gate Playbook.

### Does Duet see my passwords?

No. Anthropic says Duet does not see passwords or logins when given access to accounts, and it runs a dedicated classifier and safety system prompt that checks each message against sensitive-information leaks.

### How much does Claude Duet cost?

There is no separate price in the preview: Duet uses your existing Claude plan limits, and background checks count toward them — which means you can reach your limits sooner than with chat alone. Budget for that with Background Task Budget Planner.

### What are Duet's known limits?

Checks are periodic, not continuous, so an urgent message can wait until the next check-in; Duet can misunderstand a thread or misjudge urgency; and Anthropic concedes that tasks like booking tickets are a weakness compared with rivals built for personal errands.

### How is Duet different from Dots and Muse?

All three are proactive agents with their own cloud computers and approval gates. Duet's stated bet is work — invoices, payroll, briefs, dashboards for professionals and small businesses — while Meta's Muse (September 8) and OpenAI's Dots (September 29) lean harder on personal errands. Muse reached Japan on October 23, its first market outside North America.

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