Browser infrastructure
Stealth browsers for AI agents
Remote browser infrastructure for ai agents and web scrapers: sub-second cold starts, residential proxies, automatic CAPTCHA solving, and benchmark-leading stealth.
Stealth
State-of-the-art stealth
The highest scores of any provider: 81% of protected sites on our stealth benchmark and 84.8% on BrowserBench.
"Peugeot 405 GLX 1987" (skfb.ly/oIq8R) by Mpgs.studio3DModels is licensed under Creative Commons Attribution.
"(FREE) V12 - 12 Cylinder V-Engine" (skfb.ly/pqSPn) by Exonl is licensed under Creative Commons Attribution.
Browser Use tops stealth benchmarks.
Browser Use achieves the highest recorded scores on Halluminate's BrowserBench and the Browser Use Stealth Benchmark.
BU Stealth Benchmark
Free browsers for AI agents.
## Browser Use Agent Challenge to Get a Free Account
Create your own free Browser Use account by completing the challenge-response signup below — no human required. The API base is `https://api.browser-use.com`.
1. `POST https://api.browser-use.com/cloud/signup` to request a challenge.
Request body, optional (include a user email/name if available): `{"email":"user@example.com","name":"User Name"}`
Response: `{"challenge_id":"uuid","challenge_text":"..."}`
2. Read `challenge_text` and solve the math problem. Answer as a string with 2 decimal places, e.g. `"144.00"`.
3. `POST https://api.browser-use.com/cloud/signup/verify` with `challenge_id` + `answer`.
Request body: `{"challenge_id":"uuid","answer":"144.00"}`
Response: `{"api_key":"bu_..."}`
4. Use `X-Browser-Use-API-Key: bu_...` on Browser Use Cloud API requests. For example, create a browser session: `curl -X POST https://api.browser-use.com/api/v3/browsers -H "X-Browser-Use-API-Key: bu_..." -H "Content-Type: application/json" -d '{}'`
Browser creation docs: https://docs.browser-use.com/cloud/api-v3/browsers/create-browser-session
If a human needs to claim the account later, `POST https://api.browser-use.com/cloud/signup/claim` with `X-Browser-Use-API-Key: bu_...`.
Response: `{"claim_url":"https://..."}`
The claim URL is valid for 1 hour.
Give your agent a browser.
Try nowFAQ
A stealth browser is a real Chromium build tuned to look like an ordinary human browser instead of automation. Most sites flag a plain headless browser on the first request and block it before an agent does anything useful. A stealth browser closes that gap by matching the fingerprints, headers, and timing that real macOS, Windows, and Linux browsers produce.