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AI Detector vs GPTZero

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

AI Detector compared with GPTZero
DetailAI Detector logo AI DetectorGPTZero logo GPTZero
What it doesFree AI content detector with sentence-level insights, no signup required AI detector that identifies content generated by large language models
StageNot given Not given
FoundedNot given 2023
Based inNot given Not given
Pricing modelFree Freemium
PricingFree to use with unlimited checks and no signup required. Free tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers.
Key features
  • AI probability score
  • Sentence-level analysis
  • No account creation required
  • Independent from official Copyleaks platform
  • Fast analysis in seconds
  • Works with essays, articles, emails, reports and assignments
  • AI detection with 99.9% accuracy
  • Sentence-by-sentence highlighting of AI-generated text
  • Writing Replay showing video proof of writing process
  • Plagiarism detection
  • Grammar checking and writing feedback
  • Chrome extension for browser-based scanning
  • Integration with Canvas and Google Classroom
  • API for developer integration
  • Detects multiple AI models including GPT-5, GPT-6, Gemini, and Claude
  • AI Tutor for writing improvement
What makes it different
  • Free alternative to Copyleaks with no signup or credits needed
  • Sentence-level insights instead of just an overall score
  • Built for responsible review with human judgment at the center
  • Fast, low-friction workflow directly from the homepage
  • 99.9% accuracy rate verified by independent benchmarks from Penn State's AI Research Lab
  • De-biased for ESL learners with only 1% false positive rate for non-native English writing
  • Only detector with Writing Replay showing video proof of authentic writing process
  • Trusted by over 10 million users and 100+ organizations globally
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last check81 no change since last check
Trust Flow (Majestic)327
Citation Flow (Majestic)2443
Referring domains (Majestic)238387

5 details filled in for both companies.

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