AI Engineer World's Fair 2025

Tuesday, 3 June 2025 – Thursday, 5 June 2025·Marriott Marquis, San Francisco, CA

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Paul Klein IV

Founder

Paul Klein IV is a San‑Francisco‑based serial entrepreneur and engineer. After honing his chops at Twilio during it's IPO and founding Stream Club—a live‑streaming platform acquired by Mux in 2021 he launched Browserbase in 2024 to give developers and AI agents fast, reliable, multi‑region headless‑browser infrastructure. In its first 12 months, Klein raised $27.5 million (a $6.5 M seed and a $21 M Series A led by CRV and Kleiner Perkins with Okta Ventures) . He views Browserbase as the “last‑mile” interface between large language models and the web, enabling end‑to‑end workflow automation far beyond traditional scraping

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