Anthropic takes on ChatGPT Dots and Meta Muse with Claude Duet

The source has a clear structure, so I am writing five fact-based sections from it and checking paragraph length before the final piece.Anthropic is introducing Claude Duet, an always-on assistant that manages tasks across connected apps, tracks email and calendars, and keeps working when the app is closed. On October 21, 2026, at 12:39 pm PT, 9to5Mac's report described the research preview for Pro and Max subscribers in the US and presented Claude Duet as Anthropic taking on ChatGPT Dots and Meta Muse. Access is opening gradually, with invitations going out in waves through a waitlist.

This piece covers who can join that preview, how a person messages Claude Duet, which actions require a check first, and how shared memory, a cloud computer, plugins, and purchase tools carry the work. It is for Pro and Max subscribers in the United States who already use Claude and may receive an invitation. Team and Enterprise subscribers are outside this wave, though Anthropic plans to expand availability to those subscriptions later.

01Pro and Max research preview

The preview is included at no additional cost for Pro and Max subscribers. It still counts toward existing plan usage limits, and that includes work performed in the background. Anthropic notes the background portion could cause users to reach those limits "sooner than with chat alone."

Anthropic says invitations will go out in waves, and it says "Claude Duet isn't available on Team or Enterprise plans yet." The company plans to expand availability to those subscriptions in the future. Until then, the research preview stays with Pro and Max subscribers in the US who receive an invitation.

Claude's account @claudeai posted on October 21, 2026 that Anthropic is opening a research preview of Claude Duet, "a new app where Claude works as a proactive agent." The post says Duet comes to the user with what needs attention, completes the tasks the user asks of it, and keeps working when that person steps away.

02Send, pay, sign, or delete

Anthropic's wording calls Claude Duet "a research preview of Claude that you message the way you'd message a person." Users tell it what they need, typed or spoken, and it works in the apps they have connected. It is also built to let them know when something needs their attention.

The design asks before Claude Duet sends a message, makes a payment, signs a document, or deletes anything. Anthropic names those four actions as the points where the agent checks before it acts on a user's behalf. The @claudeai post on October 21, 2026 states the same limit: Duet "checks with you before it acts on your behalf."

The main thread stays in one place, so Claude Duet picks up where the user left off. Users can type a message or record a voice message, and either one continues that thread. Separate channels can be opened for different topics, while the main thread remains the place the agent resumes.

03Past chats and a cloud computer

Anthropic says Claude Duet uses the same memories, skills, and connectors as regular Claude. The agent can search past conversations so users do not have to repeat themselves when they return to a request they already described in regular Claude.

Separate channels for different topics share the same memory as the main thread. A detail already given in one conversation does not have to be repeated when the user opens another channel. The channels divide topics, and the memory underneath stays shared.

Claude Duet runs on its own cloud-based computer. That computer lets the agent continue working even after users close the app, including tasks that keep going when a person steps away. Background work on that computer still counts toward the plan usage limits on a Pro or Max subscription.

04Stripe, plugins, and cloud browser

Claude Duet integrates with Stripe to check for unpaid invoices and draft payment reminders. Link and Shop Pay can be used to make purchases, and those purchases require user approval. Purchases are one of the actions the agent is designed to pause for, alongside sending a message, signing a document, or deleting anything.

Claude Duet supports plugins, and Anthropic names the small business plugin as one of them. The assistant can suggest plugins that fit the user's work. In the October 21, 2026 announcement, Anthropic names no plugin besides the small business plugin.

For sites that do not have a connector, Claude Duet uses its own browser in the cloud. That browser is how the agent opens a website when no connector exists for the site. Stripe, Link, and Shop Pay stay named integrations for invoices, reminders, and approved purchases.

05Morning brief and the Make tab

Each morning, Claude Duet looks across the user's email and calendar, picks what most needs attention, and can start the first steps, including drafting replies for review. Through the day it sends updates on the work it is doing. It also follows up on threads that have gone quiet.

For a larger job, the user describes what they need, and Claude Duet works out which apps to use and how much effort the job takes. Bigger results return as files the user can review and edit, such as a research brief, a financial model, a slide deck, or a dashboard. Finished work appears in the Make tab.

Claude Duet's support page describes a Tasks tab where users track ongoing work and see which tasks need their attention. The assistant sends an update to the main conversation when a task is completed or requires a decision, and only the user can mark a task finished. The preview is powered by Claude Opus 5.5 and is available in standalone iOS and Android apps and on the web at claude.ai for people who receive an invitation.