companies

Exa AI Inc.

Builds a search engine and API purpose-built for AI agents and LLMs to retrieve real-time, structured web data.

Exa (formerly Metaphor Systems) was founded in 2021 by William Bryk (CEO) and Jeffrey Wang, and is headquartered in San Francisco. The company's search API lets developers run complex, semantic queries over web content for use in AI applications, and its Websets product extracts structured data for use cases like recruiting, lead generation, and research. Customers include Cursor, Cognition, HubSpot, OpenRouter, and Monday.com. Exa raised a $250 million Series C in 2026 at a $2.2 billion valuation, led by investors including Lightspeed Venture Partners and Andreessen Horowitz, bringing total funding to roughly $361 million and making it a unicorn five years after founding.

Founded

2021

Headquarters

San Francisco, United States

Sector

infrastructure