Browserbase has secured $40 million in fresh funding to expand its web automation platform beyond developers, as demand surges from AI startups and enterprises alike. The Series B round, led by Notable Capital with participation from existing investors CRV and Kleiner Perkins, values the company at $300 million, nearly four times its valuation during its last raise in September.
Founded just 16 months ago by Paul Klein IV, the San Francisco-based startup has quietly become a critical layer for companies building AI agents and automating workflows at scale. Its infrastructure spins up thousands of “headless browsers” browsers without a user interface to let software, not humans, navigate websites, click buttons, and retrieve data. This architecture allows Browserbase’s clients to automate actions across the internet with speed and precision.
“It can be a little contrarian to say, but we’re not going to rewrite the whole internet for AI,” Klein told Upstarts. “AI is going to get so smart that it’s able to use the internet for you.”
