The assistant that lives at the top of your screen.

Talk to Halo in English or Hindi. It reads what's on your screen, works inside any Windows app with your mouse and keyboard, and asks before it does anything that matters.

Watch a day with Halo Request an invite
Windows 11 · Mac in queue · private beta · scroll to start the day ↓
09:00Morning brief

2 languages

Speak English or Hindi, and switch mid-sentence.

Any app

Works by mouse and keyboard, so apps don't need a plugin or API.

~1 s reply

Live voice you can interrupt the moment it's wrong.

Ask first

Sending, saving and other risky steps wait for your Allow.

● A day with Halo

One working day, four ways it helps.

From the morning brief to the evening recap, this is what Halo does across a normal day on Windows.

09:00Morning brief

Talk over it. It stops and listens.

Ask about your day while you make coffee. Say "stop" or "ruko" while Halo is talking and it goes quiet at once, then answers what you actually wanted.

English + HindiLive voiceBeta

Interrupt any time

Echo cancelling keeps Halo from hearing itself, so your voice cuts in cleanly.

English, Hindi, or both

Ask in Hinglish and get an answer in the language you used.

A mute that disconnects

Ctrl Alt M closes the live voice connection, not just the mic icon.

Cost you can see

Point at the voice pill to see what voice has cost today.

Live session · duplex audio
YouWhat's on my calendar after lunch?
HaloYou have the design review at two, then a call with…⏸ interrupted
YouRuko. Bas design review ka time batao.
HaloDesign review do baje hai, conference room B mein.
11:30Inbox and apps

It uses your apps the way you do.

A message needs a reply in Teams. Halo reads the chat, types your answer, checks it, and waits for you before it sends.

Windows 11Any appAsks before sendingBeta
Task · reply to Priya in Teams
00.0slookTeams is open. Chat with Priya Sharma is selected.
01.4sreadLast message: "Can you share the Q3 deck by 5?"
02.1sclick"Type a message" box, found by its on-screen text
02.9sverifyMessage box has focus ✓
03.6stype"Sure, I'll send it before 5 today."
04.2sverifyText matches what you asked for ✓
04.3saskSending a message needs your OK
Send this reply to Priya Sharma in Teams? "Sure, I'll send it before 5 today."
AllowDon't send

Reads the screen, then acts

It finds buttons and fields by the words on them, even in apps with no accessibility labels.

Checks its own work

After each click it confirms the field, checkbox or page really changed before moving on.

Remembers what it read

Facts from one window carry over to the next, so copying numbers from a PDF into a sheet doesn't lose them.

14:00Deep work

From a question to a finished file.

Drop a CSV into Studio and get a chart, a table and a spreadsheet back. Ask for research and keep working while Halo digs in the background.

Excel · Word · PDF · PNGBackground researchCharts and diagrams
Halo Studio · Weekly orders
Here's orders.csv. Chart orders by day and tell me the best day.
Friday is the best day with 73 orders, 74% more than Monday. Orders rose every day except Wednesday.
Save it as a spreadsheet, and research what drives Friday orders.
Saved Weekly orders.xlsx to Documents\Halo.
● running Background research: Friday order patterns · you can keep working
Ask about this file…Enter
Weekly orders
ChartTableDiagramCanvas
020406080 4255486773 MonTueWedThuFri
Open in ExcelExport to WordPDFPNG
18:00Evening recap

Everything you saved, linked together.

The passages you highlighted and the explanations Halo gave are waiting in your vault, linked with [[wikilinks]] and drawn as a graph.

Markdown on your diskObsidian-friendlyGraph view
Graph · 9 notes · 12 links
Attention is all you need
Self-attention lets every word look at every other word. See [[Transformers]] and [[Q3 reading list]].
● The island

Quiet most of the day. Useful the moment you look.

Halo waits in a small pill at the top of your screen with the time and the weather, and the mic stays off until you want it. Click the pill and your whole day opens in one place.

2:05 pm24°Pune
NotesStudio⋯
2:05pm
To do today
    ↑ ↓ days
    AppsXOTCF+ Pin
    The pill calls you
    Quiet pill

    Calm by default

    The time, the weather and your city. The grey mic turns into Talk · Ctrl+Alt+M when you point at it.

    Today

    Your day on one line

    Dots for what got done, an amber bar for what still waits on you, a bell for reminders. Point at a mark to see what it was.

    Type it

    To-dos and reminders

    “+ book delivery” adds a to-do to your Notes. “remind me 5pm call Meera” sets a reminder. Type an app's name to open it.

    Calls

    The pill calls you

    Amber when a step needs your OK, pink for a reminder with Done and Snooze, green when an answer is ready.

    Answers

    One clean answer

    The source sits at the top. Make it shorter, Explain in Hindi, Copy, Read aloud and Save note sit underneath.

    Private

    Hidden while you present

    When Halo spots Teams, Zoom or Google Meet sharing your screen, it hides titles, file names and to-dos. Hide details does it by hand.

    ● Halo Studio

    From a question to a checked document.

    Studio is where the longer work happens. Put your files in a project and ask, and you can watch each step as Halo works. Then edit the result, check its numbers against your files, and turn its next steps into to-dos and calendar events.

    Halo Studio · Q3 review
    Write a one-page Q3 summary for the sales team from these files.
    1. Read q3-report.pdf
    2. Read orders.csv
    3. Wrote the summary
    4. Checked 5 amounts and dates
    Done. West grew fastest, at 31%. One thing needs you: I couldn't find the review date.
    / Type @ for a file or / for a command
    v1v2Q3 summary ChangesEditExport

    Q3 summary

    Sales reached ₹4.6 crore, up 12% on the last quarter.

    West grew fastest, at 31%, led by the Pune warehouse.

    Orders peaked on 26 September with 1,840 orders in a single day.

    Next steps
    • Share this with the sales team by 20 October
    • Review targets with Priya on date to confirm
    Add “Q3 review with Priya” to Google Calendar? Friday 24 October, 10:00 am
    212 words · about 1 pageGmail: drafts only
    Projects

    Files, rules and chats together

    Write the project's rules once (“use ₹”, “one page”). Keep a file in the project but leave it out with one click.

    Live steps

    Watch it work

    Each step shows up as Halo reads, writes and checks. When the answer is ready, they fold into one line.

    Edit

    Change it your way

    Type straight into the document, or select a sentence for Shorter, Rewrite or Explain. Changes shows what moved between versions.

    Sources

    Numbers you can check

    Every amount and date is matched against your project files, and anything it can't find is marked.

    Act on it

    From page to plan

    Next steps become to-dos on the island and dates become reminders. Calendar events and Gmail drafts wait for your Allow, and nothing is sent.

    @ and /

    Point and command

    Type @ to point at a file, or / for /shorter, /table, /check, /todo and /email. Gaps Halo couldn't fill are marked for you.

    ● Everything else

    The rest of Halo, at a glance.

    Voice

    Talk over it

    Say “stop” or “ruko” and it goes quiet at once. Echo cancelling keeps it from hearing itself.

    Voice

    English, Hindi, or both

    Ask in Hinglish and get the answer in the language you used.

    Apps

    Works in any app

    It finds buttons and fields by their words on screen, then uses your mouse and keyboard, even in old apps with no API.

    Apps

    Checks its own work

    After each click it confirms the field, checkbox or page really changed before moving on.

    Safety

    Asks before it acts

    Sending, submitting and saving wait for your Allow, with the exact text shown first.

    Apps

    Remembers what it read

    Facts from one window carry to the next, so numbers copied from a PDF into a sheet aren't lost.

    Read

    Explain and snip

    Select text and press Ctrl Shift Space, or snip a chart with Ctrl Shift S, and ask about it.

    Studio

    Research in the background

    Keep working while Halo researches. The report arrives with its sources.

    Studio

    Real files out

    Excel, Word, PDF and PNG, with charts and diagrams drawn in place.

    Notes

    Notes that link up

    Markdown on your own disk, linked with [[wikilinks]] and drawn as a graph. Opens in Obsidian too.

    Notes

    To-dos live in Notes

    Ticking a to-do on the island ticks it in your note too. Unfinished ones carry over to tomorrow.

    Safety

    A mute that disconnects

    Ctrl Alt M closes the live voice connection. Nothing is heard or billed.

    ● Shortcuts · Windows 11

    Try the shortcuts right here.

    Click the keyboard, then press a Halo shortcut on your own keys. Or pick one of the cards below to see it play.

    Press a Halo shortcutTry Ctrl + Shift + Space
    Click here first, then use your keyboard
    ● Get Halo

    Get Halo, one invite at a time.

    Halo is in private beta. Windows 11 invites go out now. The Mac version is next, and you can take your place in the queue today.

    Windows 11

    Voice, the island, Studio and Notes
    Invites open
    1. Request an invite with the Gmail address you'll sign in with.
    2. Once it's approved, we e-mail you a code and the download link.
    3. Install Halo, sign in with Google and enter the code.
    Request an invite I have a code

    On your phone? Ask for an invite now and open the e-mail later on your Windows PC. A personal PC works best: security software on company PCs often blocks new apps. Invite e-mails sometimes land in Spam.

    macOS

    Being built now
    In queue
    1. Join the Mac queue with the Gmail address you'll use on your Mac.
    2. We e-mail you when Mac invites open, in the order people joined.
    Join the Mac queue

    Before you install

    Powerful hands, with you in charge. Here is what Halo will and won't do.

    It asks first

    Sending a message, saving a file and other steps you can't undo wait for you to click Allow.

    Your keys stay local

    API keys live in an encrypted vault on your PC, never in plain text files.

    Your notes are your files

    Notes are Markdown on your own disk, readable in Obsidian or any editor.

    Silence means silence

    Hard mute closes the voice connection, so nothing is heard or billed while it's on.

    Spending in view

    Point at the voice pill to see what voice has cost today. Long contexts are trimmed to keep it low.

    Private while you present

    When Halo spots Teams, Zoom or Google Meet sharing your screen, the island hides titles, file names and to-dos. You can also turn on Hide details yourself.

    Windows 11 nowmacOS in queueEnglish + HindiPrivate beta
    ● Contact

    Talk to us, or build Halo with us.

    Ask for an invite, tell us what broke, or tell us what you'd like to work on. Messages come straight to the Halo team.

    Send a message

    For an invite, give the Google account (Gmail) you'll sign in to Halo with: the invite only works for that address.

    We reply from halo.assistant.help@gmail.com.

    Join the team

    Halo is made by a small team, and we'd like help. Pick what fits and tell us a little about yourself.

    Beta testers

    Use Halo on your own Windows 11 PC and tell us what goes wrong.

    Developers

    Python, Qt (PySide6) and Windows automation.

    Designers

    The island, Studio and this website.

    Translators

    Hindi first, then more Indian languages.

    Community and issues E-mail us