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GPTZero vs AI Checker

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

GPTZero compared with AI Checker
DetailGPTZero logo GPTZeroAI Checker logo AI Checker
What it doesAI detector that identifies content generated by large language models AI detector for text and images
StageNot given Not given
Founded2023 Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers. Free: 20 credits for new accounts. Starter: $14.99/month with 1,000 credits/month. Pro: $21.99/month with 2,000 credits/month. Scale: $40.00/month with 6,000 credits/month. Yearly billing available with 40% savings. Text scans cost 0.028 credits per word (rounded up), image scans cost 9 credits each
Key features
  • 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
  • Text detection with passage-level analysis
  • Image detection with metadata review
  • Downloadable JSON reports
  • Shared credits for text and image scans
  • AI signals with contextual explanations
What makes it different
  • 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
  • Provides context and limitations alongside detection results, not just a binary score
  • Clear explanations of what AI signals mean and where they fall short
  • Flexible credit system shared across text and image detection
Community votes00
DR (Domain Rating by Ahrefs)81 no change since last check4 +2 (up) since last check
Trust Flow (Majestic)270
Citation Flow (Majestic)430
Referring domains (Majestic)83870

5 details filled in for both companies.

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