Dex
AI with full operational memory across your entire workspace. Every datapoint is ingested, synced, and structured into compounding context for high-leverage work.
About Dex
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 UI with a collaborative canvas ● Personalization: understanding how individuals approach tasks and navigate software
We're building the infrastructure for adaptive, intent-aware systems that work the way you do.
Products
The self-driving workspace for operators — AI with full operational memory across your entire workspace.
Entry-level plan: 1.5M monthly credits, 3 integrations syncing to context system, automation runs and background agents, personal knowledge base, browser extension, iMessage, Sl...
Plan for operators running real workflows: 3M monthly credits, 5 integrations, advanced automation and agent scheduling, priority support, and advanced action predictions preview.
Full-power plan: 6M monthly credits, 15 integrations, custom privacy and data controls, custom features and integrations, dedicated account manager, and 24/7 priority support.
Fully managed personal agent team plan: unlimited monthly credits, white-glove onboarding, full agent system setup, custom privacy architecture with data isolation, dedicated bu...
Shared operational intelligence plan for teams of 3–20+ people: shared operational graph, custom agents, team permissions and admin controls, flat rate pricing, private cloud de...
What customers say
“Dex has been a game changing tool for me to build workflows and automations, quickly, and easily within Chrome. As someone who has dabbled with numerous tools, I can confidently say Dex’s user experience (and customer support!), is incredible.”
“Dex is my go-to tool for immediate in-browser intelligence. A delightful product from a user-obsessed team :)”
“I stopped scrambling before every call. Now I simply open Dex at the side and never forget to follow up after. That alone is worth it.”
Security and compliance
As reported by Dex. Ask for audit reports before you buy.
- 256-bit encryption (at rest and in transit)
- Multi-factor authentication (MFA) enforced across all accounts
- Data export, deletion, and disconnection controls
- Browser memory opt-in (off by default)
- Sensitive data filters for browser memory
- Incognito mode exclusion for browser memory
- Organizational, technical, and administrative security measures
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