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Episode Details
EPISODE INFO
- Released
- September 3, 2025
- Duration
- 18m
- Channel
- YC Root Access
- Watch on YouTube
- ▶ Open ↗
EPISODE DESCRIPTION
Exa is one of the most ambitious startups in search, taking on a problem Google never fully solved. Fresh off an $85M Series B at a $700M valuation, its mission is bold: to organize the world’s knowledge once and for all. Will Bryk, co-founder and CEO of Exa, sat down with YC General Partner Nicolas Dessaigne to share how his team is building a search engine from scratch — for the systems that will shape the future. Learn more about Exa at https://exa.ai. Apply to Y Combinator: https://ycombinator.com/apply Chapters: 00:00 – Intro & Exa’s $85M Series B raise 01:15 – What Exa is building: a search engine for AI 03:10 – Why Google never finished its mission 05:05 – Early pivot moments and lessons from YC 08:00 – The shift from developer tool to AI infrastructure 11:20 – How AI agents use Exa behind the scenes 14:05 – Organizing the world’s knowledge “for real” 17:30 – Competing in a post-Google search world 21:15 – Scaling Exa’s technology and reliability 25:40 – The hidden layer powering intelligence
SPEAKERS
Nicolas Dessaigne
hostHost on YC Root Access who interviews startup founders and operators.
Will Bryk
guestCo-founder and CEO of Exa.ai, an AI-native web search engine/API for agents.
EPISODE SUMMARY
In this episode of YC Root Access, featuring Nicolas Dessaigne and Will Bryk, Exa: Organizing the World’s Knowledge explores Exa builds AI-native web search infrastructure to organize knowledge at scale Exa positions itself as a search engine built for AIs—supporting long, complex queries, high result volumes, and deep customization rather than human-centric UI and ads.
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