TL;DR: Anthropic opened a research preview of Claude Duet on Oct. 21, 2026, a proactive agent for professionals and small businesses available by waitlist to U.S. Pro and Max subscribers on iOS, Android and claude.ai.

Anthropic announced Claude Duet on Wednesday, Oct. 21, 2026, as a research preview of a proactive AI agent for professionals and small business owners, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots."

The company positioned Duet as an app where Claude works as a proactive agent that surfaces what needs attention, completes assigned tasks, continues working when the user steps away, and checks before acting on the user's behalf, according to Anthropic's "Introducing Claude Duet."

Access is by waitlist starting with U.S. Pro and Max subscribers, with Duet offered as a standalone app on iOS and Android and on claude.ai, according to Anthropic's "Introducing Claude Duet." During the preview, Duet is included in Pro and Max plans and uses the same usage limits as the rest of Claude, according to that announcement.

What Anthropic announced

Anthropic described Duet as built for people with more work than they can track, specifically professionals and small business owners juggling decisions across connected apps, according to Anthropic's "Introducing Claude Duet."

The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent" described Duet as a competitor to Meta's Muse and OpenAI's Dots.

The agent is built around Claude Opus 5.5, according to The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent" and TechCrunch's "Claude Duet app is Anthropic's bet on agents."

Anthropic said Duet is an early version that might misread a thread or miscalibrate what is urgent, according to The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent." CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots" reported the same early-phase warning.

Anthropic also said Duet is not as strong at personal errands like booking tickets, according to The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent." CNBC reported that workplace focus is why personal errands are not quite as strong.

Morning brief and daytime monitoring

Each morning, Duet sends a short brief on the most important items across connected apps, according to Anthropic's "Introducing Claude Duet."

Throughout the day, it keeps tabs on those apps and messages the user only when something needs attention, according to Anthropic's "Introducing Claude Duet."

Users can adjust which subjects Duet flags and how frequently they want updates, according to reporting on the announcement. Those checks happen every few hours, and more frequent monitoring would consume subscribers' usage allowances faster.

The design goal is to help users prioritize time and energy and leave room for larger projects, according to Anthropic's "Introducing Claude Duet." The company said Duet is intended to decide what needs the user, what can wait, and when to check first.

Tasks Duet can take on

Users can hand Duet tasks ranging from scheduling meetings to building dashboards with dozens of tools, creating financial or sales forecasts, prototyping, and building web apps, according to Anthropic's "Introducing Claude Duet."

CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots" listed daily briefs, monitoring connected apps, building dashboards, scheduling meetings, and creating financial forecasts among Duet's tasks.

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that Duet can build a daily briefing, create dashboards, and suggest actions based on user data.

Other examples cited by Anthropic include investigating unpaid invoices, drafting customer follow-ups, building financial forecasts, and creating web applications. The company said Duet determines which applications and steps an assignment requires, performs the work remotely, and notifies the user when it finishes or needs a decision.

How Duet connects and keeps working

Duet carries over memory, skills, and connected apps from a user's Claude account, so setup requires minimal work, according to Anthropic's "Introducing Claude Duet."

The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent" reported that Duet pulls in memory, skills, and connected apps from Claude.

Users message Duet through typing or voice in one ongoing thread, so a quick reply and a weeklong project start in the same place, according to Anthropic's "Introducing Claude Duet."

Duet has a virtual machine with its own browser, so it does not require the user's laptop or phone to stay on to continue work, according to Anthropic's "Introducing Claude Duet." TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that Duet completes tasks in the background through its own virtual machine and returns for approval when needed.

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that Duet can connect to more than 6,000 connectors and plug-ins in the Claude Marketplace.

Approvals before sensitive actions

Before any big step, like sending a payment or deleting something, Duet messages the user for approval, according to The Verge's "Anthropic takes on Muse with Claude Duet, its new AI agent."

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that sensitive steps like payments require user approval, but Duet will not trade securities or move money between accounts.

TechCrunch also reported that Duet can make online purchases on users' behalf through Stripe's Link digital wallet or Shopify's Shop Pay.

Anthropic said actions are approved by its auto mode classifier, the same safeguard that protects Claude and Claude Code from taking unrequested steps, according to Anthropic's "Introducing Claude Duet."

Credential handling follows the design used for Claude Managed Agents, so Duet never directly sees passwords or sign-in tokens, according to Anthropic's "Introducing Claude Duet."

Classifier for sensitive information

Duet is releasing with a new dedicated classifier and safety system prompt that checks each message and guards against leaks of sensitive information, according to Anthropic's "Introducing Claude Duet."

The system is designed to reject requests to share the strictest tier of information, including credit card numbers and government identification, according to Anthropic's "Introducing Claude Duet." The Verge reported that the classifier and prompt are designed to reject requests to share the strictest tier, such as credit card numbers.

Other sensitive information, such as health or personal finances, is allowed through only when the user has explicitly instructed Duet to send it, according to Anthropic's "Introducing Claude Duet."

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that by default the agent would turn down requests involving credit card numbers and government identification.

Anthropic said its defenses against hidden instructions and prompt injection draw on browser-use research, and that red teams and an external firm penetration-tested Duet, according to Anthropic's "Introducing Claude Duet." The product is also covered by a public bug bounty program.

Early use inside Anthropic

Anthropic said people inside the company have used Duet to handle work while away from desks, according to Anthropic's "Introducing Claude Duet."

Boris Cherny, who leads the Claude Code team, talks through his mental to-do list with Duet on walks instead of saving work for his desk, according to Anthropic's "Introducing Claude Duet."

Chelsea Larsson, who leads model and product behavior design, hands Duet her to-do list before leaving to be with her children and receives results for an evening report, according to Anthropic's "Introducing Claude Duet."

Karan Ahuja, who leads the Duet team, uses it to schedule user interviews, work on prototypes, and ship code, according to Anthropic's "Introducing Claude Duet."

Small-business testers cited by Anthropic

Anthropic gave early access to small-business owners and entrepreneurs, according to Anthropic's "Introducing Claude Duet."

Jess Provencher, broker and owner of Pro Homes, receives a morning rundown from Duet, which once flagged a property showing on her calendar for the wrong day, according to Anthropic's "Introducing Claude Duet." Provencher said, "[This is] exactly the kind of thing I want caught without having to ask."

Amin Ebrahimi, owner of Shahs of Kabob in South Florida with about 110 employees, used Duet for accounting, customer support, and marketing and worked through invoices store by store, according to Anthropic's "Introducing Claude Duet." Ebrahimi said, "I don't need to open up 100 tabs."

Mya Dalton, a brand strategist, had Duet prepare a brief for a potential-client call and notice the call was right before her flight, according to Anthropic's "Introducing Claude Duet." Dalton said, "I didn't realize that it was right before my flight."

Competition from Muse and Dots

CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots" reported that competing products from Meta and OpenAI have started to show traction with users.

Meta's Muse, described by Meta as a personal AI agent, launched last month and rose to the top of Apple's App Store, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots." OpenAI introduced Dots, its always-on agents, during its annual developer conference weeks later, according to that report.

Meta has primarily marketed its agent toward consumers, while OpenAI's product spans enterprise and consumer markets, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots."

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that Meta also released a version for small businesses with connections to other apps, and that OpenAI's Dots has a business slant through professional-tool integrations.

Meta reported third-quarter earnings after the bell on Wednesday, with CEO Mark Zuckerberg telling analysts that more than 10 million people in the U.S. and Canada had set up Muse personal agents over the prior month and a half, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots." That report said the early Muse results helped Meta end September with its best month on Wall Street since 2022.

Availability and limits

Anthropic opened a waitlist for Duet on Wednesday, Oct. 21, 2026, and said eligible users can access it through a standalone app or the Claude website, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots."

The preview is available to Pro and Max subscribers during the preview period, according to CNBC's "Anthropic preview of Claude Duet, personal AI agent take on Muse, Dots." The Verge reported that U.S. Pro or Max subscription status is required to use it.

TechCrunch's "Claude Duet app is Anthropic's bet on agents" reported that Duet is available on iOS, Android, and the web through Claude.ai for Pro and Max customers in research preview, with a waitlist required.

TechCrunch also reported that Duet cannot show browser use as it happens, distinguishing it from some personal agents such as Instinct.

Sources referenced