Download Caelia
for Windows
One installer, the same file for everyone. Your licence key is what turns it into your copy the first time it opens.
System
Windows 10 or 11, 64-bit. Caelia does not run on macOS, Linux, or 32-bit Windows.
Disk
Around 3 GB once installed. The download itself is roughly 600 MB.
Also needed
An internet connection and a model provider key - Gemini, OpenRouter, ChatGPT, Vertex AI or Caelia Cloud.
Installing
Four steps, no configuration files
Run the installer
It installs for the current user, so Windows will not ask for an administrator password.
Enter your licence key
On the first launch Caelia asks for the key and binds it to this computer.
Connect a model provider
Open settings and paste the key from whichever provider you use. You can change it later.
Say something
Start with something small - open a folder, summarise a document - then work up.
Updates look after themselves. Caelia checks for a new version shortly after it starts, downloads it quietly and installs it when you close the app. There is nothing to download again from this page.
Download questions
Can I install without a licence key?
The installer runs, but Caelia will not open its main window without a valid key. Buy a licence from the pricing page first.
Why is it so large?
Caelia ships the pieces it needs to work on a fresh machine - a browser engine for web automation, a Python runtime for its agents, and the agent workspace. Nothing extra to install afterwards.
Where does it install to?
Into your user folder rather than Program Files, which is why no administrator rights are needed. You can pick a different location during setup.
Will uninstalling delete my licence and settings?
No. Uninstalling removes the program and leaves your settings, memories and activation in place, so reinstalling picks up where you left off.
Something not working?
Send us the details and we will get you running.