Stagehand
by Browserbase
The open source SDK for browser agents
Reviewed by the the30top research team · Last reviewed 2026-10-27
Overview
Stagehand is built by Browserbase and gives developers AI primitives on top of a full browser driver. The SDK is free and open source, and your cost is the LLM inference you choose. It is code-first, so non-developers will need a hosted tool instead.
Our verdict
Stagehand is a developer SDK for mixing AI and code in browser automation. It is a toolkit, not a finished agent.
Best for
Developers who want AI-assisted browser control with deterministic fallbacks.
Avoid if
You want a no-code agent or a managed end-user product.
Pros
- Free and open source
- Three language SDKs
- Model choice is yours
Cons
- Code-required
- You manage LLM spend
- Cloud browsers are a separate Browserbase cost
Key capabilities
Frequently asked questions
Is Stagehand free?
Yes. Stagehand itself is free and open source. You pay for the LLM calls you choose.
Which languages does it support?
TypeScript, Python and Go.
Who makes Stagehand?
Browserbase.