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How to install Astro on Windows

Astro does what Perplexity Comet does, and Perplexity Comet costs $20/mo. This guide gets you the free one.

What you end up with

Astro installed like any other app on your Windows PC. It is free, and it stays free — there is no account, no trial and no subscription at the end of this.

Time
About 15 minutes
Steps
5
Cost
Free

Install Astro

  1. Download Astro

    Astro's own installer — no BrowserOS, no toolchain, nothing to build.

    Download Astro-Setup.exe

    You know this worked when: Astro-Setup.exe finished downloading

  2. Run the installer

    Unsigned, so SmartScreen blocks it once: pick More info, then Run anyway.

    Open the release page

    You know this worked when: Astro opens

  3. Let the search engine download

    About 150 MB on your first search. Every search after that runs on your own machine.

    You know this worked when: A search returns results

  4. Choose where answers come from

    Astro ships with publik API selected — no key to paste. Swap in your own route here if you prefer.

    You know this worked when: A model is selected in Settings — publik API unless you changed it

  5. Coming back later

    Next time: open Astro from the Start menu or taskbar — no terminal needed.

    You know this worked when: You know how to reopen Astro

If something goes wrong

Nothing here can damage your computer, and every step can be run again safely. If a command fails, the usual cause is the step before it not having finished.

Still stuck? Tell us what happened and we will fix the guide. Include the step number and we can usually reproduce it.

Have a different setup?