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Exa

AI · San Francisco, US

San Francisco startup (formerly Metaphor) building a search engine and API designed for AI agents.

Founders

Will Bryk (United States · ♂) — A Harvard CS/physics grad and early Cresta engineer, he co-founded Exa (originally Metaphor) in 2021 to rebuild web search using neural embeddings for AI and LLMs.
Jeff Wang (United States · ♂) — A Harvard roommate of Bryk who spent three years building data and web infrastructure at Plaid, he co-founded Exa in 2021 to create an embeddings-first search engine for AI.

Shares the most investors with (number = shared investors):

Date	Round	Amount
May 2026	Series C Exa announced a $250M Series C at a $2.2B valuation to build web search infrastructure designed for AI agents rather than human users.	$250M
Sep 2025	Series B Exa raised $85 million in a Series B led by Benchmark at a $700 million valuation to enhance its search engine for AI.	$85M
Sep 2024	Debt Grupo FS raised R$160M via commercial notes and innovation credit lines, coordinated by Bradesco BBI, to fund its cybersecurity subsidiary Exa.	$28.8M
Jul 2024	Series A Exa, an AI search-engine lab, raised a combined $22M seed and Series A led by Lightspeed Venture Partners, with NVentures and Y Combinator.	$22M

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Data is community-curated and may be incomplete.