Third Layer
ThirdLayer is an applied research and product lab building the next interface for human–AI collaboration, centered around Dex, an AI browser copilot.
At a Glance
- High-leverage teams
- B2B SaaS users
- Operators at tech firms
AI Tools by Third Layer
(1)
AutoAgent
Autonomous Agent Harness Builder
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Latest News
ThirdLayer launches Dex on Y Combinator
ThirdLayer reaches 10,000+ users milestone
Products & Services
An AI browser copilot providing on-screen perception and UI-level interaction.
Market Position
The AI Coworker in Chrome with full operational memory.
Leadership
Founders
Regina Lin
Co-founder & CEO. Previously co-founded Contour AI, built an ecommerce MVP with 40K+ customers. Studied Math/CS at Harvard (dropout).
Kevin Gu
Co-founder. Previously Math & Stat at Harvard. Quant/ML researcher at Jump Trading, IBM Research, QuantCo, and Meta.
Executive Team
Regina Lin
Co-founder & CEO
Harvard dropout, founder of Contour AI.
Kevin Gu
Co-founder
Harvard Math/Stat, prev Jump Trading/Meta.
Board of Directors
Founding Story
Pivoted to build Dex four weeks before Demo Day at Y Combinator W25 to create a tool for themselves that acts as an AI coworker in the browser.
Business Model
Revenue Model
SaaS subscription (Freemium)
Pricing Tiers
Basic features
Advanced features
Enterprise-grade security
Target Markets
- High-leverage teams
- B2B SaaS users
- Operators at tech firms
- GSuite automation
- GitHub management
- Sales automation (LinkedIn, Apollo)
- Meeting prep
- Operators at Google, OpenAI, Goldman Sachs, Salesforce, Palantir, Meta