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GPTZero vs Sanitizer

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 Sanitizer
DetailGPTZero logo GPTZero Sanitizer
What it doesAI detector that identifies content generated by large language models Convert, sanitize, and index documents locally before anything reaches an LLM
StageNot given Not given
Founded2023 Not given
Based inNot given US
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. Personal edition: Free. Business edition: $49.99 with 15-day free trial, automatic updates, available in Microsoft Store.
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
  • Scrubs names, contacts, client identities, credentials, and keys
  • Converts large files to clean Markdown and flat CSV format
  • Full-text indexing for exact terms, tags and standards references
  • Semantic index that finds passages by meaning
  • Automatic retrieval tools for AI agents
  • Citation of source documents
  • Local OCR processing
  • Reversible redaction mode for local un-redaction
  • No cloud uploads or accounts required
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
  • Everything runs locally on your computer with no cloud uploads or data transmission
  • Reduces file size dramatically while preserving content
  • Purpose-built retrieval tools reduce AI context window waste
  • Dual indexing with both full-text and semantic search
  • Sanitization removes sensitive data before AI sees any content
Community votes00
DR (Domain Rating by Ahrefs)81 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)272
Citation Flow (Majestic)4323
Referring domains (Majestic)838734

5 details filled in for both companies.

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