Building Search for AI Agents with Exa CEO Will Bryk

What It Covers

Exa CEO Will Bryk explains how his company builds search infrastructure specifically for AI agents, which require deeper context, comprehensive results, and complex query handling that Google's consumer-oriented, click-data-driven architecture was never designed to deliver, positioning agentic search to surpass Google Ads revenue by the 2030s.

Key Questions Answered

• •Agentic vs. Human Search Architecture: Agents require fundamentally different search infrastructure than humans — they need thousands to 10,000 results per query rather than 10, tolerate variable latency, and submit complex semantic queries without keyword compression. Building for agents means exposing granular toggles like domain filters, keyword controls, and semantic switches that human-facing search engines deliberately hide.
• •Token Efficiency via Retrieval: Pairing smaller language models with high-quality retrieval cuts inference costs by up to 20x compared to running large models alone. Exa extracts only the most relevant document segments before passing content to models, dramatically reducing input token consumption. The practical architecture: a large model orchestrates tasks, small models execute them using retrieval to compensate for reduced parameter counts.
• •Google's Click Data Advantage Doesn't Transfer: Two decades of human click-signal data — Google's core ranking moat — provides minimal advantage when serving AI agents. Agents don't click, don't browse casually, and don't benefit from popularity-weighted results. This levels the competitive playing field, allowing a sub-100-person team to build retrieval quality that outperforms Google on deep, complex, business-critical queries.
• •RL Training on Search Tools Yields Measurable Gains: Exa's research applying reinforcement learning directly to search tool selection — comparing Google SERP wrapping against Exa — showed that agents trained on Exa made fewer total search calls while achieving higher task performance. The mechanism: Exa's architecture accepts complex natural-language queries, so agents don't waste calls reformulating needs into keyword approximations.
• •Go-to-Market and Recruiting as Unsolved Search Problems: Company and people search remains a genuinely unsolved problem — no current tool reliably surfaces every competitor across global markets or every qualified candidate matching specific criteria. Exa is building go-to-market intelligence products targeting this gap, using it internally as a live testbed, treating comprehensive entity retrieval as the core technical challenge rather than a UI or workflow problem.