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Dex
Dex

Dex

The AI Coworker in Chrome.

HQ
San Francisco, CA, US
Accelerator
Y Combinator logoY CombinatorW25
Overview
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Employees

ThirdLayer is an applied research and product lab building the next interface for human–AI collaboration. Think Cursor for knowledge work, optimized for speed and embedded directly where you work. Most web agents are built for set-and-forget tasks.

But real work is fluid and messy—spread across tabs, tools, and evolving decisions. Dex transforms your browser into an intelligent, multimodal workspace that understands your intent through voice, text, and action. It enhances familiar interfaces, automates tedious steps, and removes the friction of handoffs.

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Dex - Quick Facts

Who are Dex's competitors?

Companies similar to Dex include Onyx, StableBrowse, HeyClicky and Decisional AI.

Where is Dex's headquarters located?

Dex's headquarters is located in San Francisco, CA, US.