Introducing Stagehand v4: the SDK for browser agents

Playwright was built for testing, we built Stagehand for your agent: improved context management, self-healing actions, and iframe support.

Stagehand now lives in the browser as an extension, bringing the local experience to remote browsers. Being in the browser means lower round trip time, which makes actions execute faster and minimizes potential CDP race conditions.

We benchmarked v4 extensively and found that it’s performs 2x faster than Playwright, while being ~80% more token efficient.