Anthropic launches Claude Duet! What are the differences between it and the AI agents of GPT, Grok, and Gemini? The interesting thing about Duet is that Anthropic wants to turn Claude into a "chief staff member" who is truly involved in the daily operations of the company, especially for professionals and small business owners. For example, if you run a small company, Duet can find the customers who need to be replied to from Gmail and Slack, screen out overdue invoices from QuickBooks and Stripe, prepare collection emails, payroll, and pending contracts, and then combine business data to create sales forecasts and financial dashboards. It supports over 6000 connectors and plugins, directly inheriting your original Claude's memory, skills, and connected applications, and can even develop web applications on your own cloud computer. It emphasizes more on determining which things should be done by oneself and which need to be decided by the boss, and key operations such as sending messages, making payments, and signing documents must be approved. Securities trading and account transfers are directly prohibited. Duet and GPT's Dots are actually highly similar in terms of technical form, both have their own cloud computers, can work continuously, and can actively detect problems. The difference lies more in the product focus: OpenAI Dots is based on GPT-6 Astra and supports over 4000 applications, making it more like a universal long-term partner that can collaborate across ChatGPT, Slack, Teams, and undertake research, development, content production, and project management. Claude Duet, based on Opus 5.5, focuses on daily judgments, financial administrative processes, and task delivery in business operations, and specifically adds protection against sensitive information outsourcing. Looking at the other companies, their respective routes are already very clear: ① XAI Grok Bot: More like an AI employee company. You can create multiple bots at the same time, each responsible for sales, recruitment, development, customer service, and even form a team to hand over work to each other, which is suitable for splitting different positions to AI. ② Meta Muse: More like a personal life butler. You can communicate directly through WhatsApp to help you shop, book trips, process bills, complete daily chores, and even make purchases through Stripe Link. The commercialization direction is clearly biased towards consumption and transactions. ③ Google Gemini Spark: The advantage is Google's own ecosystem. Gmail, Calendar, Docs, Sheets, and Slides can all become work contexts, suitable for individuals and businesses who rely on Google Workspace for a long time, reducing cross software hassle. ④ Instinct: An AI startup with a valuation of $10 billion, taking a lighter personal assistant route. Integrating AI into daily life by helping users book tickets, buy groceries, unsubscribe, and contact merchants through SMS and phone calls. Duet is currently only open to Claude Pro and Max users in the United States as a backup, with no additional charges during the preview period. However, background tasks will consume the original quota, and the account will only be checked every few hours, so its reliability still needs to be verified.