Anthropic previews Claude Duet, a proactive agent built on Claude Opus 5.5

Anthropic opened a research preview of Claude Duet on 21 October 2026, a standalone application for iOS, Android and the web at claude.ai where Claude works as a proactive agent. Designed around Claude Opus 5.5, Duet is built for professionals and small business owners and is rolling out by waitlist to Claude Pro and Max subscribers in the United States. Team and Enterprise plans are not included yet.

Claude Duet carries over the memory, skills and connected apps from a user’s existing Claude account, drawing on more than 6,000 connectors and plugins in the Claude Marketplace, including Gmail, Slack, Google Calendar, Google Drive, QuickBooks, Stripe, Gusto, LinkedIn, Docusign, HubSpot, Canva, Calendly and Shopify. Because Duet runs on its own cloud virtual machine with its own browser, it keeps working after the user closes the app. Each morning it sends a brief covering the most important items across connected accounts, then checks those accounts every few hours and posts in the main thread when a job finishes or needs a decision. Larger outputs such as research briefs, financial models, slide decks and dashboards appear in the Make tab, while active jobs sit in the Tasks tab.

Before sending an email, making a payment, signing a document or deleting anything, Duet shows what it plans to do and waits for approval. Approved purchases through Link by Stripe or Shop Pay use a one-time virtual card for each transaction, and 1Password sign-in support is planned. Following the credential design of Claude Managed Agents, Duet never sees raw passwords or sign-in tokens, and a new dedicated classifier and safety system prompt block leaks of credit card numbers or government identification while requiring explicit instruction before sharing health or financial details.

Key details

• Included with Pro and Max plans in the US at no extra charge during the research preview
• Background checks and tasks count toward five-hour session and weekly plan limits, with one full limit reset granted on admission until 30 November 2026
• Runs on Claude Opus 5.5 with no model selector, and users cannot watch or take over its cloud browser
• Trading securities, moving money between accounts, making phone calls, sending text messages and connecting Microsoft 365 are not supported