TL;DR: Dex is a Y Combinator Winter 2025 startup The AI Coworker in Chrome, currently active with a team of 2.
The AI Coworker in Chrome
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ThirdLayer is an applied research and product lab building the next interface for human–AI collaboration. Our first product is Dex, an AI copilot for the browser. 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. Beneath the surface, Dex is more than a browser agent — it’s a foundation for: ● Long-term, cross-modal memory grounded in real workflows ● A new interaction layer to replace static…
Yes. Dex was funded by Y Combinator in the Winter 2025 batch. The AI Coworker in Chrome
ThirdLayer is an applied research and product lab building the next interface for human–AI collaboration. Our first product is Dex, an AI copilot for the browser. 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…
Dex was part of Y Combinator's Winter 2025 batch.
Dex has a team of 2 people according to Y Combinator's directory.
Dex is currently listed as Active with a team of 2 in Y Combinator's directory.
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