Browser Use 1.0.0 released

A major rewrite that removes 80% of the codebase, simplifying the agent to run Python directly on Chrome. Same models now score up to 33 points higher, cost 2.7–5.2x less, and run 2–3x faster.

What changed in 1.0.0

• Agent now executes Python in a persistent REPL on Chrome DevTools Protocol with no intermediate DOM serializer or action schema.
• Default model is bu-fast on Browser Use gateway; default browser is cloud-hosted. Use Browser('chromium') for local Chromium or Browser('chrome') to attach to your own Chrome.
• API key changed: one Browser Use key (BROWSER_USE_API_KEY) replaces per-provider keys. Max steps default reduced from 500 to 100, timeout defaults to 1700 seconds.
• New features: typed structured output, file uploads and downloads, secrets management, domain restrictions, web search integration, and Docker images.

Check before you update

• Model parameter llm=None now defaults to bu-fast; must specify llm explicitly to use your own model.
• Browser() now creates a cloud browser by default; existing code expecting local Chromium must use Browser('chromium').
• max_steps defaults to 100 instead of 500; max_steps=500 must be set to restore old behavior.

Summarised by AgentGid from Browser Use's official release notes on GitHub, as reported there; read the original before relying on it. Price, status and release dates come from our daily data.