Browserbase raised $67.5M across Seed, Series A, and Series B rounds from Kleiner Perkins, CRV, and Notable Capital. The company was founded in 2024 and is headquartered in San Francisco.
Its product suite includes the core Browserbase platform, the open-source Stagehand SDK for natural-language browser automation, and the no-code Director tool.
Browserbase was founded in January 2024 by Paul Klein IV as a solo founder, following his experience as CTO of StreamClub (acquired by Mux in 2021) and three years as a software engineer at Twilio. Klein identified the opportunity after repeatedly being asked by other founders for help with headless browser infrastructure.
The company has raised $67.5M across three rounds in 15 months: a $7M Seed led by Kleiner Perkins (June 2024), a $21M Series A co-led by CRV and Kleiner Perkins (November 2024), and a $40M Series B led by Notable Capital at a $300M valuation (June 2025).
Browserbase operates a cloud-native headless browser platform that lets developers run, manage, and scale browser sessions through a single API.
The core infrastructure handles session isolation, proxy rotation, CAPTCHA solving, and automatic scaling so teams can automate web interactions without maintaining their own browser fleet.
Browserbase provides cloud-hosted headless browser infrastructure designed for AI agents and automated workflows. The platform enables developers to spin up isolated browser sessions through a single API with built-in proxy rotation, CAPTCHA solving, automatic scaling, and session recording.
The product suite includes three integrated offerings: the core Browserbase serverless browser infrastructure, the open-source Stagehand SDK for natural-language browser automations, and the no-code Director tool launched in 2025.
The headless browser market is expanding rapidly as AI agents and automated workflows require programmatic web interaction at scale.
Browserbase sits at the intersection of browser automation and AI infrastructure, competing with both legacy proxy providers and newer AI-native entrants. The company benefits from a growing customer base that includes Perplexity, Vercel, and 11x.
The headless browser market is expanding rapidly due to the proliferation of AI agents that need to interact with legacy websites lacking APIs. Industry analysts note that while OpenAI and Perplexity are building computer-use models for broad one-off tasks, Browserbase focuses on the execution layer for reliable, repeated, high-concurrency browser work.
Browserbase positions itself as core infrastructure that agents call to navigate, authenticate, extract data, and take action on the web. The total addressable market spans web scraping, automated testing, RPA replacement, and agentic workflows.
Browserbase differentiates from legacy headless browser providers through a developer-experience-first approach paired with AI-native design. Unlike Bright Data or Oxylabs, which primarily sell proxy networks with browser as an add-on, Browserbase treats the browser as a first-class infrastructure primitive.
Its open-source Stagehand SDK creates ecosystem lock-in by making automations writable in natural language rather than brittle XPath selectors. The company also benefits from a high-profile investor and customer network that acts as a distribution moat.
