Key facts

Founded
—
HQ
San Francisco, United States
Employees
—
Website
Funding stage
Series B · US$40m
LinkedIn
Further facts
  • Capital: Notable Capital led the US$40m Series B in June 2025, with existing investors CRV and Kleiner Perkins.
  • Offices: Browserbase hires for full-time roles in San Francisco.

Focus areas

Browser automation Enterprise search Agent governance

About

Browserbase runs cloud browsers that AI agents use to navigate websites, fill forms and act where APIs cannot. It also sells Search and Fetch APIs that give agents fast, token-efficient web context, and Agent Identity to get past anti-bot systems, CAPTCHAs and login walls. The company runs more than 35 million browser sessions a month across 10,000 customers, including Ramp, Microsoft and Lovable, on SOC 2 Type II infrastructure. Notable Capital led its US$40m Series B in June 2025.

How they use AI

Browserbase builds the browser layer for AI agents. Stagehand, its open-source framework, lets developers drive a browser with natural-language steps in Node and Python, and Director lets anyone describe a web task and generate Stagehand scripts to deploy on Browserbase. Browserbase Agents scale fully managed browser agents from simple prompts. Amplitude uses Browserbase and Stagehand to run AI-powered product demos.

Products and services

  • Browser infrastructure — Cloud browsers for agents, with logs, live view and session replay
  • Stagehand — Open-source AI browser automation framework for Node and Python
  • Browserbase Agents — Fully managed browser agents run from simple prompts
  • Search API and Fetch API — Token-efficient web search and page content for agents
  • Agent Identity — Authentication for agents to get past anti-bot checks and login walls
  • Director — No-code tool that turns a described web task into Stagehand scripts

Notable customers / partners

  • Ramp
  • Microsoft
  • Lovable
  • Amplitude

Key people

  • Paul Klein — Founder

Investors