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Browserbase/Browserbase Changelog/Reduce context bloat in Stagehand 3.4

Reduce context bloat in Stagehand 3.4

May 13, 2026Browserbase ChangelogView original ↗

Stagehand 3.4.0 is live.

Use ignoreSelectors to keep noisy parts of a page out of extract() and observe(): ads, nav, modals, related posts, and anything else your agent should ignore.

Plus:

  • Agent variables are now supported in the Stagehand API schema without the experimental requirement
  • Agent mode now defaults to hybrid for compatible models and DOM mode otherwise
  • New CUA model support: openai/gpt-5.4-mini, openai/gpt-5.5, and anthropic/claude-haiku-4-5
  • Better OOPIF frame handling and stronger observe element ID prompting

Fetched June 1, 2026