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99tests vs DetectGPT

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 DetectGPT
Detail 99testsDetectGPT logo DetectGPT
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 Free AI checker to detect AI-generated text from ChatGPT, Claude, Grok, Gemini and other language models
StageEstablished Not given
Founded2011 Not given
Based inIN Not given
Pricing modelPaid Free
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 Free. No account, no card required. Up to 5,000 words per run for AI detection and up to 3,000 words for plagiarism checking.
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
  • Analyzes up to 5,000 words per run without account signup
  • Detects AI writing from ChatGPT, Claude, Grok, Gemini and other LLMs
  • Analyzes public URLs and homepages
  • Plagiarism checker with public web overlap detection up to 3,000 words
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
  • Independent tool not affiliated with Turnitin, OpenAI or other major platforms
  • Text scored in browser with no storage on servers
  • Integrated plagiarism checker included as free feature
Community votes00
DR (Domain Rating by Ahrefs)30 +2 (up) since last check39 no change since last check
Trust Flow (Majestic)913
Citation Flow (Majestic)3226
Referring domains (Majestic)10935

5 details filled in for both companies.

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