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Invited beta · Windows 11

Motion

Help, right where your cursor is.

Curzoo is an AI assistant for Windows 11 that works from . Hold Right Alt over anything and it . Hold and speak, or tap and type, and it answers, writes, fills in a form or shows you how.

I have an invite

Free during the beta, . No card needed.

Try it now: hold Right Alt over anything marked with a corner tick.Tap anything marked with a corner tick.

One key. Three ways to press it.

Hold. Say nothing.

It explains

Point at a word, a button, a number or an error message and hold the key. A one-line explanation appears beside your cursor. Press Space for more, or type a follow-up.

Hold. Speak. Let go.

It works out the job

Say what you want in your own words. Your voice is turned into text , and Curzoo decides whether to answer, write, fill in a form or show you how.

Tap. Type. Enter.

Same thing, silently

A tap opens a small box beside your cursor. Type what you want and press Enter. Good for open offices and late nights.

Right Alt is the key to start with. You can change it in Settings. Left Alt keeps working as normal.

Try it here, with your own key.

This is a practice page. Hold Right Alt over something on it, or tap Right Alt and pick a request. The answers are prepared, so you can see how Curzoo feels without installing anything.

A letter from a landlord about a new tenancy, with a start date, the rent and a deposit.

Letter

Dear Ms Rao, thank you for taking the flat at 14 Alder Court.

Your tenancy starts on 12 December, and the first month's rent will be charged .

We will need a to sign the agreement before you collect the keys.

The rent is , due on the first of each month, with a deposit of £1,150.

Please sign and return the agreement by 28 November.

Hold Right Alt over something, or tap it.

Practice page. Prepared answers. Nothing is sent. Follow-ups work in the real app.

Drawing of Curzoo, not a screenshot.

Say it your way. Curzoo picks the job.

There are no modes to choose and no commands to learn. These are the seven things it can do, and where each one stops.

(no words)

Hold, say nothing

Explain

A one-line explanation of whatever is under your cursor: a term in a contract, a setting, a chart, an error message.

It explains what it can see near your cursor. It can be wrong, so check anything that matters.

"what is this charge on my statement?"

Hold and speak, or tap and type

Answer

A short answer beside your cursor, with a card you can open for more and a box for follow-up questions. Spoken answers are read aloud if you want them to be.

It answers from what it knows and what you've shared, so check facts that matter. When it isn't sure what you want, it answers and types nothing.

"reply saying thanks, let's do Thursday"

Click where the text should go first

Write

It writes at the spot you had selected: an email reply, a cell, a paragraph. When it's done the tag says Written. Press Ctrl+Z to undo.

It never presses Enter or Tab. Check the result before you send it, because some apps save pasted text straight away. Ctrl+Z takes it back.

"fill this form"

Click the form first

Fill a form

Lightly tested

It moves through the form and fills in what it knows from the facts you've saved, such as your name and address. You can watch every field, and moving the mouse stops it.

It . It leaves passwords, card and bank details, ID numbers, signatures and agreements blank for you. It can miss an oddly labelled field, so check the form.

"walk me through freezing the top row"

Hold and speak, or tap and type

Show me how

Lightly tested

A thin ring appears around the next thing to click, with one line saying what to do. You click. It checks, then rings the next step. It stops by itself after 15 steps or 5 minutes.

. Curzoo never clicks, types or sends while it is showing you.

"dictate I'll be ten minutes late"

Hold and start with the word dictate

Dictate

Lightly tested

It types what you say where your text cursor is, tidied up: fillers out, punctuation in.

One line at a time. It never presses Enter.

"read the opening hours on example.org and save them to a file"

Hold and speak, or tap and type

Do a task

Lightly tested

For a job with several steps, Curzoo can read files you've shared and public web pages by their address, open an app, and save a file to a Curzoo folder in Documents.

It asks on a card before anything outward you didn't name, and stops after . It will not enter passwords or payments, install anything or change settings.

It can use the documents you share.

Pick files or a folder in the Curzoo window. Then ask as usual, and the answer names the document it came from. If the answer isn't there, it says Not in your docs.

  • PDF
  • Word .docx
  • Excel .xlsx
  • CSV
  • Plain text
  • Markdown
  • Your files are opened to read only. Curzoo never changes or deletes them.
  • Sums, counts and averages from a spreadsheet are worked out on your PC, and the card says how.
  • Scanned PDFs can't be read yet. Password-protected files can't either.

Curzoo was asked about example.org. A link led somewhere else, so it stopped to ask.

It asks before it acts.

Most of what Curzoo does is put words in front of you. When you give it a job with several steps, it can act, so it works inside fixed limits. Before anything outward that you didn't name yourself, it stops and shows a card with exactly what it is about to do. Only a real click on Yes lets it go on. No key press can say yes for you.

It can

  • Read files and folders you've shared
  • Read public web pages by address
  • Open an app by its Start menu name
  • Save a file to a Curzoo folder in Documents
  • Put text on your clipboard
  • Type where your text cursor is
  • Fill in a form, without sending it

It won't

  • Send a form or press its buttons
  • Enter a password or a payment
  • Install anything
  • Change settings
  • Use a command line or run scripts
  • Act in banking, trading or crypto apps
  • Act in a password manager
  • Read a folder you haven't shared

These limits narrow what can go wrong. They do not make it impossible. Some steps go ahead without a card, such as reading a site you named or saving a new file. One Yes to reading the public web covers other public sites for that task. A web page or a file can contain text written to mislead an AI, and Curzoo can be misled by it. Read each card before you click Yes. Multi-step tasks are the newest part of Curzoo and have had the least testing.

More on the limits

What leaves your PC, and what doesn't.

Curzoo needs the internet. Each request goes to Curzoo's server, which checks your account and passes the request to Claude, an AI model made by Anthropic, to be answered.

Stays on your PC

Never sent to us or to Anthropic.

  • Your voice. Speech is turned into text on your PC, and the audio is never stored or sent.
  • Your activity list and most of your settings. If dictation clean-up is on, your list of preferred spellings is sent with each dictation.
  • The copy Curzoo keeps of documents you share, encrypted for your Windows account.
  • The speech models, once downloaded.
  • What you do in an app on your : the key does nothing there. Password managers are on it from the start. A picture taken in another app can still show that app's window if it is near your cursor.

Leaves your PC

To Curzoo's server, which passes it to Anthropic.

  • The words of your request, typed or spoken.
  • When you hold to explain: a picture of the area around your cursor, and the text of what you pointed at.
  • When your question is about the screen: the same picture. The tag says Looking at your screen when this happens.
  • The parts of your shared documents that apply to your question.
  • The name of the app and the title of the window you are in.

Curzoo's server keeps a count of your usage: when, what kind of job, and what it cost. It does not keep your requests or the answers.

One switch, , turns off every picture of your screen. Curzoo then works from text alone and can be less accurate.

Worth knowing

Curzoo is AI. It can misread what's on screen, mishear you, or state something false with confidence. Check anything that matters before you rely on it or send it.

Read the full list

The beta is invite only, and free.

We are letting people in a few at a time so we can fix what they find. Leave your email and we'll send a code when there's a place for you.

This is early software, and we'd rather say so. Explaining, answering and writing have had the most use. Show me how has been tried by hand in only a few apps. Filling in forms, dictation and multi-step tasks pass our own tests but have had little or no use on real screens. Expect them to fall short sometimes, and tell us when they do.

Price
Free during the beta. Pricing will be announced before the beta ends.
Usage
A Beta account has usage limits, counted in credits. If you reach one, Curzoo tells you which and when it resets.
Card
Not needed.
Account
Sign in with your email and a 6-digit code we send you. No password to remember.
Works on
Windows 11 PCs only.
Install
. Installs for your Windows account only, with .
Voice
Optional. Speech models download the first time you speak to it.
I have an invite

Questions people ask first.

Yes, during the beta, and you don't need a card. A Beta account has usage limits, counted in credits: explaining, answering, writing, filling a form or being shown how each use one credit, a multi-step task uses more, and dictation uses none. If you reach a limit, Curzoo tells you which one and when it resets. Pricing will be announced before the beta ends, so you can decide then whether to keep it.

A PC running Windows 11 and an internet connection. A microphone is optional: everything works by typing. The installer is about 233 MB. If you use your voice, Curzoo downloads its speech models the first time, which is about 775 MB more, or about 310 MB on a PC that is short of disk space. On an NVIDIA PC with 3 GB free, speech also downloads a GPU speech runtime of about 250 MB the first time you use your voice. Until then the first spoken request is answered on the CPU.

No. Curzoo runs on Windows 11 only.

No. Curzoo copies the area around your cursor at the moment you press its key, and holds that copy in memory. When you hold to explain, the copy is sent with the request. When you ask a question, it is sent only if the question is about the screen. An unused copy is dropped, and none is ever saved to disk. You can turn Screen capture off entirely in Settings or from the tray icon. While one of its panels is open, the default Clear glass look also copies the screen behind that panel a few times a second to blur it. That copy stays in memory and is never saved or sent.

No. The microphone opens only while you hold the key, and Windows shows its microphone indicator while it does. Your speech is turned into text on your PC. The audio is never stored and never leaves the PC. The text of your request does.

Curzoo does nothing at all in apps on its excluded list, which starts with common password managers: 1Password, Bitwarden, KeePass, KeePassXC, LastPass, Dashlane, NordPass and RoboForm. It also skips password boxes when Windows tells it that's what they are. Windows doesn't always tell it, particularly in web browsers, and a password manager's browser extension isn't covered by the list. So don't use the key on a password box.

No. It can write the email and fill in the form, and then it stops. It never presses Enter, never clicks Send or Submit, and never enters payment details. You do that part.

Treat it like a quick, well-read assistant who is sometimes wrong. It is AI, so it can misread a screen or state something false. A web page can also be written to mislead it. Check anything that matters.

First to Curzoo's own server, which checks that you're signed in and counts the request against your credits. The server passes it to Claude, an AI model made by Anthropic, which writes the answer. Our server keeps a count of your usage (when, what kind of job, what it cost) and does not keep the request or the answer. The What gets sent page lists exactly what is included for each kind of request.

Yes, in Settings. Right Alt is the default. On keyboards where Right Alt is AltGr, it still types its usual characters when you press it with another key.

Quit Curzoo before playing competitive online games. It watches for its key across Windows, and a game's anti-cheat system may object to that. Curzoo pauses itself when a full-screen game is in front, but we make no promise about how any anti-cheat system will treat it.

The beta installer isn't signed yet, so Windows SmartScreen shows "Windows protected your PC". Click More info, then Run anyway. The download page walks you through it. Some antivirus programs may also flag Curzoo, because it watches for one key and can read the screen.

In Windows, open Settings, then Apps, then Installed apps, and remove Curzoo. That removes the program only. Your settings, saved facts, downloaded speech models and your sign-in stay on the PC. To clear them, sign out on Curzoo's Account page before you uninstall, then delete two folders. The download page says which.

We can't say yet. Invites go out in small groups, in the order people confirmed their email.

One key. Help where you already are.

The beta is free and by invitation, for Windows 11.

I have an invite