Anthropic's Claude Duet Is a Proactive Agent That Messages You First

What Claude Duet does

Duet flips the usual chatbot pattern. Rather than answering questions, it reaches out first about your priorities, completes tasks on its own and carries on while you are offline. Everything happens in one continuous thread, and you can talk to it by voice or text.

• Morning briefs: a daily summary of what matters across your connected apps, including email and calendar.
• Proactive monitoring: it checks connected apps every few hours and notifies you only when something needs attention.
• Real work, not just reminders: Anthropic lists everything from scheduling to dashboards, forecasts, prototypes and web apps. File outputs include research briefs, financial models, slide decks and dashboards.

Early users quoted in the announcement describe the appeal plainly. Jess Provencher, a broker at Pro Homes, called it "exactly the kind of thing I want caught without having to ask". Amin Ebrahimi, who owns the 110-employee Shahs of Kabob, said: "It brings it all together. I don't need to open up 100 tabs".

Its own cloud computer, running on Opus 5.5

Each Duet runs on a dedicated virtual machine with a cloud browser. Your device does not need to be on and no Claude session has to stay open. When a website has no connector, Duet uses that cloud browser to do the job.

The model is fixed. Anthropic's support page is direct about it: "You can't choose a model. Claude Duet runs on Claude Opus 5.5".

Duet also draws on your existing Claude memory. It searches past Duet chats and your non-project Claude chats, and it respects the "Search and reference chats" setting if you have turned that off.

Connectors and payments

Anthropic says Duet can reach more than 6,000 connectors and plugins through the Claude Marketplace. That number counts connectors and plugins together; the apps it names are Gmail, Google Calendar, Google Drive, Slack, QuickBooks, HubSpot, Docusign, Calendly, Gusto, LinkedIn, Canva and Shopify, with 1Password listed as coming soon.

Payments run through partner integrations: Stripe for checking invoices, and Link by Stripe and Shopify's Shop Pay for purchases. TechCrunch reports it can make online purchases through either wallet.

Approval gates and data guardrails

Duet needs your sign-off before it sends a message, makes a payment, signs a document or deletes content. Some things are off-limits entirely: it will not trade securities or move money between accounts. That is a narrower rule than "no payments" - it can still buy something through Link or Shop Pay once you approve it.

According to Anthropic, a dedicated classifier stops sensitive information from leaking. By default it blocks credit card numbers and government IDs, and health and financial data pass through only with your explicit permission. Direct access to passwords and sign-in tokens is blocked, and passwords are entered through a separate form so they never appear in the chat.

The company also lists an auto-mode approval classifier, prompt-injection defenses carried over from its browser-use research, red teaming, external penetration testing and bug bounty coverage. These are Anthropic's own descriptions; independent testing of the preview has not been published.

Who can get it and what it costs

Access requires three things: a Pro or Max plan, a US-based Claude account and a waitlist invitation. Team and Enterprise plans are not included yet, and invitations go out in waves with no guaranteed timeline.

1. On the Claude Duet product page, select "Join the waitlist".
2. Enter your name and the email address of your Claude account, then your plan and phone type (iPhone or Android).
3. When the invitation arrives, open the email on your phone and sign in with your Claude account. Activation takes a few minutes.

Duet ships as iOS and Android apps, with web access through Claude.ai. Setup happens on the phone and needs an Apple or Google account that matches the waitlist email.

There is no extra charge. Duet is included in Pro and Max and shares the usage limits of your regular Claude account. Those background checks every few hours count toward the limits too, and complex tasks use more model turns. To soften that, Anthropic is giving each user one complimentary usage-limit reset, valid until November 30, 2026. Engadget reports that on general rollout Duet will be available to Pro subscribers at $20 a month.

What it can't do yet

• It may misread threads or misjudge what is urgent - Anthropic says so itself.
• Personal errands are weak. TechCrunch quotes Anthropic: "Duet isn't good at handling errands or booking tickets, and it can't show you its browser use as it happens."
• It does not make phone calls or send text messages.
• It is a separate app from the main Claude app for now.
• Microsoft 365 is not supported, and Slack support is limited.

How it compares with Meta Muse and OpenAI Dots

Duet lands in a crowded month. Engadget framed it as Anthropic's answer to Meta Muse and OpenAI Dots, and TechCrunch also lists smaller agents such as Hark, Instinct, Grok Bot and Fo.

All three big players share the same idea: an agent that lives on its own cloud machine and works without you watching. Meta's Muse runs in a per-user cloud VM on the Muse Spark model, as we covered at Meta Connect 2026. OpenAI's Dots are always-on GPT-6 Astra agents reachable in ChatGPT, Slack, Teams or a call, announced at DevDay 2026 for ChatGPT Pro users outside the EEA, the UK and Switzerland.

The practical difference for now is price of entry and reach. Dots require ChatGPT Pro, while Duet comes with the $20 Claude Pro plan - but only in the US, only by invitation, and without Microsoft 365.

Frequently asked questions

Does Claude Duet cost extra?

No. It is included with Pro and Max at no extra cost, but it draws from the same usage limits as your regular Claude account, including its background checks.

Can I use Claude Duet outside the US?

Not yet. The research preview needs a US-based Claude account, and Anthropic has not given a date for other countries.

Is Claude Duet available on Team or Enterprise plans?

No. Only Pro and Max subscribers can join the waitlist during the preview.

Can Claude Duet spend my money without asking?

Anthropic says no. Payments, sent messages, signatures and deletions all need your approval, and it will not trade securities or move money between accounts.

Which model does Claude Duet use?

Claude Opus 5.5, and you can't switch to another model.

Sources

• Anthropic announcement: https://claude.com/resources/articles/claude-duet
• Claude Help Center, Get started with Claude Duet: https://support.claude.com/en/articles/17631495-get-started-with-claude-duet
• Claude on X: https://x.com/claudeai/status/2112984669943968099
• TechCrunch: https://techcrunch.com/2026/10/22/claude-duet-app-is-anthropics-bet-on-agents/
• Engadget: https://www.engadget.com/2293646/claude-duet-is-anthropics-answer-to-meta-muse-and-openai-dots/

Related on The Proof Desk: OpenAI DevDay 2026: GPT-6.1 Sol, always-on dots and a $500 ChatGPT Pro plan (/openai-devday-2026-gpt-6-1-sol-dots-pro-500), and Meta Connect 2026: VR Glasses, Camera-Free Ray-Ban Meta Audio and Muse on Your Face (/meta-connect-2026-vr-glasses-ray-ban-meta-audio-muse).

Key takeaways

• Claude Duet is a separate app in which Claude reaches out first, with morning briefs and checks of your connected apps every few hours.
• It runs on Claude Opus 5.5 on its own cloud VM and browser, so it keeps working while your phone is off.
• It asks before sending, paying, signing or deleting, and it will not trade securities or move money between accounts.
• Access is a US-only waitlist for Pro and Max; Team, Enterprise and Microsoft 365 are not supported yet.
• There is no extra fee, but Duet shares your Claude usage limits, background checks included.