According to CoinMeta, Anthropic officially announced the launch of the new AI intelligent assistant application Claude Duet on October 21, 2026. This application is built upon the company's flagship model Claude Opus 5.5, which was released on September 22, 2026. It is positioned as an proactive digital assistant for professionals and small business owners, aimed at helping users manage complex tasks and handle them proactively. Claude Duet features a proactive design, sending users a brief summary every morning and regularly checking relevant applications throughout the day, with proactive notifications only when attention is needed. Users can issue commands via text or voice to perform a range of tasks, from scheduling meetings to building dashboards and creating financial forecasts. The application has its own independent virtual machine and browser in the cloud, allowing it to work continuously in the background and notifying users once tasks are completed. Security mechanisms are a core part of its design; before performing sensitive operations, the specific content is displayed and user approval is required. Claude Duet is currently available in a research preview format, limited to Claude Pro and Max subscription users in the United States, with no additional fees.