Browserbase
Managed headless browsers for AI agents, with Stagehand as the SDK
Logo assets
Browserbase brand colours
Extracted from the artwork and ranked by how much of the mark each covers — not from a brand book, so treat them as observed rather than official.
What Browserbase is
Browserbase runs Chromium sessions you connect to over CDP, plus the surrounding machinery agents actually need: reusable contexts, an embeddable live view, extension loading and a download API. Stagehand, its open-source TypeScript SDK, layers model-driven act/extract calls over ordinary Playwright so you can drop back to selectors whenever the model gets it wrong. The infrastructure itself is closed and priced by the browser-hour, with residential proxy bandwidth billed separately.
Recent changes
- 2025-06-24Browserbase raises a US$40M Series B
The largest round in the category to date, and the clearest signal that agent browser infrastructure is being funded as a platform rather than a feature. Reported terms; not vendor-confirmed here.
- 2025-04-22Stagehand 2.0
Browserbase's SDK moves from an experiment to the default way people write agent browsing in TypeScript, mixing model-driven act/extract calls with ordinary Playwright in the same script.