Claude Duet Messages You First, and Quietly Spends Your Plan While It Works

Woman holding a red coffee cup and reading her phone in bright morning light

Anthropic’s new app does not wait for you to open it. According to TechCrunch, Claude Duet, announced October 21 as a research preview, is a proactive agent: it comes to you with what needs your attention, works in the apps you have connected, and keeps going after you close it. It is Anthropic’s answer to Meta’s Muse and OpenAI’s Dots, but it is aimed squarely at work, not errands.

Each morning, Duet sends a short brief drawn from your email and calendar, picks out what most needs attention, and can start first steps such as drafting replies for your review. Through the day it checks in every few hours and messages you only when something needs you. Bigger jobs, from research briefs to dashboards, come back as files in a Make tab.

The Agent That Comes to You

The shift is direction. A chatbot waits for a prompt; Duet starts the conversation, running on its own cloud computer so your phone or laptop need not stay on. It carries over memory, skills, and connectors from Claude, and TechCrunch reports it can reach more than 6,000 connectors and plug-ins in the Claude Marketplace, including Gmail, Slack, QuickBooks, Stripe, HubSpot, and Shopify.

That reach makes it a business tool, not a personal assistant. Anthropic pitches it to professionals and small business owners: finding unpaid invoices and drafting reminders through Stripe, preparing payroll for review, or building a forecast across several apps. It runs as a standalone app on iOS and Android and on the web at claude.ai.

The Meter Keeps Running While You Sleep

Here is the catch the launch headlines mostly skipped. Duet is included in Pro and Max plans at no additional cost, but 9to5Mac notes it counts toward your existing plan usage limits, including work performed in the background, which Anthropic says could cause users to reach those limits sooner than with chat alone.

That changes the math. A chatbot spends your allowance only when you talk to it; a proactive agent spends it while you are in a meeting or asleep. Anthropic checks every few hours rather than continuously precisely because nonstop checking would burn limits faster, but heavy users should still expect the first month to teach them what an always-on helper costs in usage, even though the subscription price has not changed.

What It Will, and Will Not, Do on Your Behalf

Duet is designed to ask before it sends a message, makes a payment, signs a document, or deletes anything. Purchases go through Stripe’s Link wallet or Shopify’s Shop Pay with your approval, and TechCrunch reports it will not trade securities or move money between accounts. Anthropic also added a classifier that checks each message, and says Duet will by default turn down requests for credit card numbers and government identification.

Access is narrow for now: a research preview for Pro and Max subscribers in the US, handed out through a waitlist in waves, and 9to5Mac confirms it is not available on Team or Enterprise plans yet. Team-plan companies and non-US users are watching from the sidelines for now.

Why This Matters

The commodity version of this story is another entry in the agent race. The version that matters to a buyer is the economics of delegation. Duet’s real test is not whether it can draft a reply, it is whether the hours it saves are worth the usage it quietly consumes, and whether its approval step earns enough trust for it to touch invoices and payments.

Practical advice: if you get an invite, connect only the apps Duet needs, start it on one recurring job such as the morning brief, and watch your usage for a week before handing it anything expensive. If you are on a Team plan or outside the US, there is nothing to do yet except wait. The agent era is arriving as a metered utility, and the first skill it demands is budgeting attention, yours and its.

Meanwhile in Apps & Tools: Anthropic’s AI agent that negotiates for lawyers and Manus 2.0’s Cue agent, with a phone number and wallet show how fast agents are moving from chat to action.

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Daniel covers apps, software, and productivity tools — from AI-powered apps and major platform updates to the tools teams actually use to get work done.