Browser automation tools are everywhere right now. But if you’ve ever tried to automate tasks on sites with bot detection, you know the real challenge isn’t getting the job done—it’s doing it without getting blocked.
Two tools that claim to solve this are BrowserAct and Agent Browser. Both promise stealth execution. Both say they can handle complex web tasks. But how do they actually perform when you put them side by side?
I ran both through the same hands-on tests. Here’s what I found.
What Are BrowserAct and Agent Browser?
Before diving into the comparison, let’s quickly define what we’re looking at.
BrowserAct is a cloud-based browser automation platform that emphasizes stealth, scalability, and AI-powered task execution. It runs real browsers in isolated environments and claims to bypass even sophisticated anti-bot systems.
Agent Browser takes a slightly different approach. It’s a local-first tool that uses your own browser profile to execute tasks. The pitch is simple: by acting like a real user, with a real browser history and fingerprint, it naturally avoids detection.
Both sound great on paper. But paper doesn’t trigger Cloudflare challenges. Real tests do.
The Test Setup
I designed three common automation scenarios:
- Data extraction from a Cloudflare-protected e-commerce site
- Form submission on a site with reCAPTCHA v3
- Multi-step login and dashboard navigation on a banking demo
For each test, I measured three things:
- Success rate (did it actually complete the task?)
- Stealth score (was it flagged, challenged, or blocked?)
- Execution speed (how long from start to finish?)
I ran each test five times per tool. Here’s how it shook out.
Test 1: Cloudflare-Protected E-Commerce Scraping
This is the acid test. Cloudflare’s bot detection is notoriously good at spotting headless browsers and automated traffic.
BrowserAct passed 4 out of 5 runs. The one failure came from a CAPTCHA challenge that required manual intervention. When it worked, extraction was clean and fast—averaging 12 seconds per page.
Agent Browser had a rougher time. Only 2 out of 5 runs completed without interruption. The local profile helped initially, but Cloudflare eventually flagged the repeated request pattern and started serving challenges. Average time for successful runs was 18 seconds.
Winner: BrowserAct
Test 2: reCAPTCHA v3 Form Submission
reCAPTCHA v3 doesn’t show puzzles. It scores your behavior silently in the background. A low score gets your submission rejected with no explanation.
BrowserAct handled this surprisingly well. It maintained consistent scores above 0.7 (the typical threshold) across all 5 runs. The secret? Randomised mouse movements, realistic typing delays, and clean IP rotation.
Agent Browser also performed decently here. The real browser fingerprint helped, and 3 out of 5 runs succeeded. The two failures seemed tied to IP reputation—once the site flagged the IP, the local profile couldn’t save it.
Winner: BrowserAct (by a narrower margin)
Test 3: Multi-Step Login and Navigation
This is where things got interesting. Complex workflows with multiple redirects, session management, and dynamic content loading.
Agent Browser shined here. Because it uses a real, persistent browser profile, session cookies and local storage worked exactly like a human user. Navigation felt natural. All 5 runs succeeded without issues.
BrowserAct struggled with session persistence across steps. Two runs lost authentication midway. The cloud-based approach, while stealthy, introduced state management complexities that Agent Browser’s local model avoided entirely.
Winner: Agent Browser
Key Takeaways
| Criteria | BrowserAct | Agent Browser |
|---|---|---|
| Cloudflare bypass | ✅ Strong | ⚠️ Inconsistent |
| CAPTCHA handling | ✅ Good | ⚠️ IP-dependent |
| Complex workflows | ⚠️ Session issues | ✅ Excellent |
| Stealth fingerprinting | ✅ Rotating profiles | ✅ Real profile advantage |
| Setup complexity | Medium | Low |
| Scalability | ✅ Cloud-native | ❌ Local limitations |
Which One Should You Choose?
Go with BrowserAct if:
- You’re scraping protected sites at scale.
- You need IP rotation and cloud execution.
- Stealth against sophisticated anti-bot systems is your top priority.
Go with Agent Browser if:
- Your tasks involve complex, multi-step user flows.
- You want minimal setup and lower cost.
- You’re automating personal workflows, not large-scale scraping.
The Honest Verdict
Neither tool is perfect. BrowserAct wins on raw stealth power and scalability. Agent Browser wins on workflow realism and simplicity.
But here’s what surprised me: combining both approaches might be the real move. Use BrowserAct for the hardcore scraping tasks where detection is your biggest enemy. Use Agent Browser for the nuanced, session-heavy automations that need to feel human.
The era of “one tool to rule them all” in browser automation? It’s not here yet. And maybe that’s okay.
Have you tried either of these tools? Or found another stealth browser agent that works better? Drop your experience in the comments.
