Automated Browser Testing Tool for Web Apps at Scale
Stop maintaining your own Selenium grid. Automate browser testing with Selenium, Playwright, Puppeteer, or Cypress across 3,000+ browser and OS combinations, with no drivers to patch and no infrastructure to own.
Trusted by 3M+ users globally at
"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"
"We figured out a more efficient way to monitor system health and resolve failures earlier in lower environments."
"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."
"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."
Why Choose TestMu AI for Automated Browser Testing
From broad browser and OS coverage and parallel runs to KaneAI test authoring, HyperExecute, debugging, and local testing.
BROWSER COVERAGE
Test on 3,000+ Desktop and Mobile Browser-OS Combinations
Catch cross-browser issues on real Chrome, Firefox, Safari, and Edge across every Windows and macOS version on TestMu AI cloud.
Get Started For Free
- Every major Chrome, Firefox, Safari, and Edge version.
- Spin up any Windows or macOS version on demand, no local VM.
- Simulate geolocation across 170+ countries, no proxies needed.
PARALLEL TESTING
Run Tests in Parallel Across Hundreds of Sessions
Run Selenium, Playwright, or Cypress tests in parallel. Every session starts fresh and isolated.
Get Started For Free- Scale concurrent sessions to match load, no infra setup.
- Each test runs in a clean browser with no shared state.
- Run one suite across every target browser at the same time.
BROWSER TEST AUTHORING
Author Browser Tests with KaneAI
KaneAI is a GenAI-native test agent that writes, runs, and maintains browser tests from natural language.
- Describe a flow in plain English, get executable test steps.
- Turn Jira tickets, PRDs, or GitHub PRs into structured tests.
- Fire suites from the terminal or CI with Kane CLI, no UI.
FASTER TEST EXECUTION
Run Browser Tests Up to 70% Faster with AI-Native HyperExecute
HyperExecute runs test scripts and browsers on the same cloud machine, cutting the network round trips that slow a remote grid.
- Reorder runs from failure history so likely failures go first.
- Abort the build after repeated failures, no full-suite wait.
- Inspect error type, failing step, and stack trace per failure.
TEST DEBUGGING
Debug Every Test Failure with Detailed Test Logs
Replay failed sessions with video, network logs, and console output. Inspect issues from the dashboard.
Get Started For Free- Jump to the failure frame with video and network side by side.
- Inject HTTP headers to test auth flows, flags, and A/B variants.
- Persist cookies, local storage, and login state, no re-auth.
LOCAL TESTING
Run Browser Tests Against Localhost and Staging
UnderPass opens an encrypted tunnel from your machine to the TestMu AI cloud, so tests reach builds that never touch the public internet.
Get Started For Free- Reach localhost, staging, and anything behind a firewall.
- Outbound SSH-encrypted tunnel that routes through your firewall.
- Works for live sessions and Selenium or Playwright runs.
Works With Every Test Automation Framework
Point your Selenium, Playwright, Cypress, or Puppeteer suite at TestMu AI with one endpoint change. No rewrites, no migration.
Everything You Need for Automated Browser Testing
Headless Browser Testing
Run automated tests in headless mode to maximize speed in your CI/CD pipeline.
Free Automation Minutes
Start with 100 automation minutes, free for lifetime, on 2 parallel sessions.
Test Analytics
Spot flaky tests, pass-rate trends, and slow suites across every build.
Chrome DevTools Protocol (CDP)
Intercept requests, capture logs, and run performance traces on cloud.
Auto-Healing Tests
Fix broken locators at runtime with no manual test maintenance.
Data Masking
Hide sensitive data from logs and recordings during remote browser sessions.
Enterprise-Grade Features of
TestMu AI Automated Browser Testing
HyperExecute for Private Cloud
Run HyperExecute entirely within your private cloud. Keep all test data behind your firewall, with full control over runners and storage.
Enterprise Access & Governance
Manage teams at scale with SSO, role-based access control, audit logs, and organization-wide policy enforcement.
CI/CD Pipeline Integration
Plug HyperExecute CLI into your CI/CD pipeline. Push scripts and run end-to-end tests on every deployment.
LambdaTest is now TestMu AI
On January 12, 2026, LambdaTest evolved into TestMu AI, the same trusted testing cloud, upgraded for the AI era.
Now a full-stack agentic AI quality engineering cloud, it automates end-to-end testing across web, mobile, and AI apps. The platform is AI-native, with autonomous agents that plan, author, execute, analyze, and optimize tests.
The next era of the world's first fully Autonomous Agentic AI Quality Engineering Platform is here.
Asad Khan
Co-Founder & CEO
AI-Agentic Quality Engineering
AI-native agents that plan, author, run, and analyze browser tests across 3,000+ browser-OS combinations, real devices, and your CI pipeline.
Autonomous Testing
Detailed analysis of the agent under test, from the perspective of a synthetic end-user.
Multi-Persona Simulation
Diverse user personas like International Caller, Digital Novice and more.
Risk Scoring & Regression
End-to-end regression testing for the agent under test with insights.
Success Stories of TestMu AI (Formerly LambdaTest)
50%
reduction in test execution time
“HyperExecute is a highly reliable test execution platform and has excellent customer support.”
Sagar Uday Kumar
Sr. Engineering Manager
Some Love from our Customers
As Best Egg expanded its product offerings and entered new markets, we knew our old testing infrastructure couldn’t keep up.
With support from Tenny Agustin, our Engineering Operations Lead, we modernized our approach with
TestMu AI
Best Egg
best-egg
Excited to Share My Learning Journey with Kane AI & Lambda Tool!
I'm pleased to announce that I've recently gained hands-on experience exploring Kane AI through the Lambda Tool and it’s been a fantastic journey of upskilling!
KaneAI
Suryateja Goud
suryateja-goud
See how is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.
TestMu AI
Microsoft India
MicrosoftIndia
More Reasons to LoveTestMu AI (formerly LambdaTest)
See how TestMu AI improves your testing with seamless integration, quicker results, and unmatched accuracy.
Users
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Tests
1.5B+
Enterprises
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Countries
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TestMu AI Named a Challenger in the 2025 Gartner® Magic Quadrant™
Read ReportTestMu AI recognized in The Forrester Wave™: Autonomous Testing Platforms, Q4 2025
Read ReportWall of Fame
TestMu AI is the #1 choice for SMBs and enterprises across the globe.
Enterprise-Grade Security
We safeguard your data and AI systems with global security, privacy, responsible AI, and ESG standards.
Integrations
Works where you work, 120+ integrations with the tools your team relies on.
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