Paul Klein IV (@pk_iv) — Twitter Score 83 out of 1000

Paul Klein IV is a software entrepreneur who founded Browserbase, a browser infrastructure company built for AI agents and web automation. Paul Klein IV's Twitter Score is 83 out of 1000 (a Good rating) as of September 2026, ranking #9,429 (top 5%) among 486,860 tracked accounts.

Paul Klein IV co-founded Stream Club as CTO, a venture that raised $2.1 million in 2020 before being acquired by Mux in 2021. Following the acquisition, he previously worked at Mux as Director of Self-Service for roughly two years before departing to build Browserbase. He also previously worked at Twilio as a Technical Lead. Paul Klein IV is affiliated with Hawk Hill Ventures.

Paul Klein IV leads Browserbase as its founder and CEO. The company announced a $40 million Series B financing round led by Notable Capital, with participation from existing investors CRV and Kleiner Perkins, on June 18, 2025, per the company's announcement. Kleiner Perkins had previously led Browserbase's seed financing and co-led its Series A. Paul Klein IV's account has published 5,350 posts and has been mentioned by 53 accounts a total of 103 times, with 20,365 followers as of September 2026 on the platform.

Who follows Paul Klein IV on X?

The accounts that follow Paul Klein IV include 377 founders, 110 angel investors, 41 influencers and 6 VCs, among them Marc Andreessen, Garry Tan, Vance Spencer, Frank, John Wang and Arjun Balaji.