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Galactex Chrome Extension

Adds LLM-powered autocomplete to Overleaf, using a server you host yourself.

Checked 4 Oct 2026 Reviewed by Alex Listed since October 2024

Screenshot of Galactex Chrome Extension

At a glance

Starts at Free No paid plan found on the Chrome Web Store, September 2026.
Free tier Yes
Platforms Chrome
Best for LaTeX writers comfortable running a self-hosted LLM server
Not for Anyone wanting a ready-to-use hosted service

3.9 out of 5

Scored by Alex after real use

Our verdict

GalacTex brings large-language-model autocomplete into Overleaf, triggered with a keyboard shortcut or by selecting text as a prompt. It doesn't come with a hosted backend; you need to set up and run the Galactica server yourself before the extension does anything. It's open source, version 0.1.0, with no ratings yet, and configuration and generation settings are all handled from the toolbar popup.

✓What it does well

Overleaf-native autocompleteAutocomplete triggers directly inside Overleaf with a simple keyboard shortcut.
Selection-based promptingSelected text can be used directly as the prompt for generation.
Local, private configSettings are saved locally and the plugin's authors collect no user data.

✕Where it falls short

Self-hosted server requiredIt only works once you set up and run a separate LLM server yourself.
No ratings yetThere are no user ratings on record for this early-stage extension.
Early, experimental releaseAt version 0.1.0, it is not a polished, finished tool yet.

Key features

Keyboard autocompleteAlt+C triggers autocomplete directly while writing in Overleaf.
Selection-to-promptAlt+Shift+C sends your selected text as the generation prompt.
Configurable generationGeneration parameters can be tuned from the extension's popup.
Tool togglesIndividual tools can be enabled or disabled from the same popup.

Questions about Galactex Chrome Extension

What does Galactex Chrome Extension do?

Galactex Chrome Extension adds large-language-model autocomplete to Overleaf. Autocomplete triggers with a keyboard shortcut, or selected text can be sent as the prompt, and all configuration and generation settings live in the toolbar popup.

Does Galactex Chrome Extension need its own server?

Yes. Galactex Chrome Extension does not come with a hosted backend, so the Galactica server has to be set up and run separately before the extension does anything. It is best for LaTeX writers comfortable running a self-hosted LLM server, not anyone wanting a ready-to-use hosted service.

Is Galactex Chrome Extension free?

Yes. Galactex Chrome Extension is free and open source, and no paid plan was found on the Chrome Web Store in September 2026. Settings are saved locally, and the plugin's authors collect no user data.

What keyboard shortcuts does Galactex Chrome Extension use?

In Galactex Chrome Extension, Alt+C triggers autocomplete while writing in Overleaf, and Alt+Shift+C sends the selected text as the generation prompt. Generation parameters can be tuned, and individual tools switched on or off, from the extension's popup.

How mature is Galactex Chrome Extension?

Galactex Chrome Extension is an early, experimental release at version 0.1.0, and the reviewer notes it is not a polished, finished tool yet. It has no user ratings on record. Alex still scored it 3.9 out of 5 on 4 Oct 2026.

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