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99tests vs Voxel51

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

99tests compared with Voxel51
Detail 99testsVoxel51 logo Voxel51
What it doesReal testers run your AI-generated test cases on real phones and browsers with a human-verified pass/fail report in 3 days Search, visualize, curate, and label multimodal data for physical AI models
StageEstablished Established
Founded2011 2018
Based inIN US
Pricing modelPaid Paid
PricingStarter ₹9,999 + GST (5 sessions × 45 min, 2 devices/browsers, up to ~25 test cases, 3 business days); Standard ₹18,999 + GST (10 sessions × 45 min, 4 devices/browsers, up to ~50 test cases, 3 business days); Deep ₹34,999 + GST (20 sessions × 90 min, 6 devices/browsers, up to ~120 test cases, 5 busi Not given
Key features
  • Test case execution on real Android and iOS phones
  • Cross-browser testing on Chrome, Safari, Edge and Firefox
  • Human-verified pass/fail results for every test case
  • Screenshot and video recording of every failure
  • Exact reproduction steps for every failure
  • Device, OS and browser version details in report
  • Verified severity grading against published rubric
  • Duplicate finding merging and verification
  • One-click re-run on same plan with new build
  • Coverage table showing pass/fail/blocked status per device
  • Natural language search across datasets
  • Synchronized multimodal playback with video, 3D, sensors, and maps
  • Automated annotation quality assurance
  • VLM-assisted labeling and active learning
  • Agentic data work automation
  • Model evaluation and failure pattern detection
  • Dataset versioning and comparison
  • Support for billions of samples
  • Role-based access controls and SSO
What makes it different
  • Real devices only, not emulators or simulators
  • Human verification catches failures emulators and AI agent test runs miss
  • Fixed price with no hourly overage or hidden charges
  • Unfilled device sessions automatically credited to next job
  • Unified platform keeps data iteration continuous across the entire workflow
  • Search and curate across multimodal data types in one place
  • Agentic workflows automate repetitive data tasks
  • Built on open source FiftyOne toolkit
  • Deployed in regulated industries with full compliance and governance controls
Community votes00
DR (Domain Rating by Ahrefs)28 +1 (up) since last check70 no change since last check
Trust Flow (Majestic)923
Citation Flow (Majestic)3247
Referring domains (Majestic)1091128

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