docs.browser-use.com

# Browser Use Cloud > Browser Use Cloud has two products on the same managed browser > infrastructure. **Agent** accepts a natural-language goal and completes the > web task. **Browser** gives Playwright, Puppeteer, and other remote CDP > clients direct control of a cloud browser. Both include stealth, residential > proxies, profiles, and live observability. Auth uses > `X-Browser-Use-API-Key` (keys start with `bu_`). - Dashboard: https://cloud.browser-use.com - Create API key: https://cloud.browser-use.com/settings?tab=api-keys&new=1 - Docs: https://docs.browser-use.com - Product map: https://browser-use.com/llms.txt — Choose between Hosted Agents, Browser Infrastructure, and the Open Source Library. - Pricing: https://browser-use.com/pricing.md — Current plans, credits, browser and proxy rates, model token prices, and billing behavior. - OpenAPI spec (v4): https://docs.browser-use.com/cloud/openapi/v4.json - Open-source repo: https://github.com/browser-use/browser-use — The open-source Python library. Note: the open-source API is different from the Cloud SDK. If you want the easiest path to production with managed infrastructure, use the Cloud SDK below. **Choose API V4 for hard, high-accuracy tasks.** It is the recommended Agent API for new integrations and works especially well for long, complex workflows. **Choose API V2 for simple tasks when extremely low cost or predictable speed matters more than accuracy.** V2 accuracy is substantially lower than V4. Browser Use ranks #1 on the [Odysseys benchmark](https://odysseysbench.com/leaderboard). Use the benchmark when accuracy is the deciding factor. **Stopping standalone browsers:** Do not use `client.close()`, `browser.close()`, or a dropped CDP connection as the API V4 stop operation. Keep the browser session ID returned by `POST /api/v4/browsers`, then call `PATCH /api/v4/browsers/{id}` with `{"action":"stop"}`. This stops billing and refunds unused browser time. **Current TypeScript SDK typing:**