# Exa

> Exa is an applied AI lab building a search engine for AIs. Their neural search API lets developers and AI agents retrieve high-quality, factual content from the web using natural-language queries, powering RAG, research agents, and enterprise knowledge workflows.

- **Founded:** 2021
- **Headquarters:** San Francisco, California, United States
- **Founders:** William Bryk (Co-founder & CEO), Jeffrey Wang (Co-founder & CTO)
- **Team size:** ~120
- **Products:** Search API, Contents API, Answer API, Websets, Fast mode
- **Notable:** Raised $112M+ total across Seed, Series A, and Series B, Reached $700M valuation in September 2025, Built and operate hundreds of H200 GPUs (the exa-cluster)

## Products & services

- **Search API** — Neural, keyword, and hybrid web search with semantic ranking, returning 10-10,000 links per query.
- **Contents API** — Cleaned, structured page contents and highlights extracted from any URL.
- **Answer API** — LLM-grounded answers backed by Exa's live web index, designed to reduce hallucinations.
- **Websets** — Curated, filterable collections of entities (companies, papers, people) discovered from the web.
- **Fast mode** — Sub-425ms search latency for real-time AI agents.

## Achievements

- Raised $112M+ total across Seed, Series A, and Series B
- Reached $700M valuation in September 2025
- Built and operate hundreds of H200 GPUs (the exa-cluster)
- Sub-425ms search latency in Fast mode
- Rebranded from Metaphor to Exa with a focused product redesign

## Latest updates

- **2025-09** — Announced $85M Series B led by Benchmark at a $700M valuation.
- **2025** — Shipped Fast mode with sub-425ms latency for agent workloads.
- **2024-07** — Closed $17M Series A from Lightspeed, Nvidia, and Y Combinator.

## Links

- Website: https://exa.ai
- LinkedIn: https://www.linkedin.com/company/exa-ai
- Twitter/X: https://x.com/ExaAILabs
- GitHub: https://github.com/exa-labs

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Profile page: https://yespress.io/exa
Published by YesPress — https://yespress.io
Last updated: 2026-05-19