1Claude Duet
No. 1 — Claude Duet. On the lists of 8 of 8 AIs; median place there: 1. The AIs put it first for the strictest written rules: it asks before sending, paying, signing or deleting, and refuses securities trades even with your yes.
Did you know
Claude Duet doesn't wait for you to ask. It checks your connected apps every few hours, sends a short morning briefing, and works in its own cloud virtual machine with its own browser, so it never touches your computer.
- What it is
- A background agent that checks your accounts every few hours, in its own cloud machine.
- Its edge
- Only one with a stated rule for deletion and outright refusals even when you approve.
- Who it suits
- Suits careful US Pro or Max users willing to wait; not anyone outside the US.
- Trust to act aloneAsks before 4 actions
Why it is here
Four actions always wait for your approval: sending a message, making a payment, signing a document and deleting anything. Duet shows what it is about to do first. Securities trades are refused even if you approve.
Duet can reach more than 6,000 connectors in the Claude Marketplace, per Anthropic's count. Even so, the same four approval rules apply. It checks your accounts only "every few hours", so it does not act nonstop.
Did you know
Duet has no separate price, but its background checks count against your Claude plan limits. An app that keeps watching your email and calendar can use up your allowance even on days you never open it.
History
On October 21, 2026, Anthropic opened Claude Duet as a research preview. Only US Pro and Max subscribers can join, and only from a waitlist. Team and Enterprise plans are left out for now.
Keep in mind
In one hands-on test, Duet stalled on some real work, such as inbox, Slack and deck tasks. It also felt slow, doesn't message you first, and has no desktop app yet.
What people say
"But polish isn't enough when you're competing with every other personal agent for attention." — Claire Vo
Where to go further
Open the official Duet page to see how to join the waitlist and what the app does. First read the approval part: Duet shows its planned actions and waits for your yes before it sends, pays, signs or deletes.

