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GPTZero vs White Circle

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 White Circle
DetailGPTZero logo GPTZeroWhite Circle logo White Circle
What it doesAI detector that identifies content generated by large language models AI safety and control infrastructure for guardrails, monitoring and red-teaming
StageNot given Startup
Founded2023 2025
Based inNot given Not given
Pricing modelFreemium Contact for pricing
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. Not given
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
Not given
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
  • Independent oversight across the AI ecosystem, not tied to any single model provider
  • Halo open-source framework for post-training models, up to 3.5× faster than TRL
  • Research-driven approach integrating real-world findings into product
  • Multi-layer defense with red-teaming, detection, and verification
Community votes00
DR (Domain Rating by Ahrefs)81 no change since last check42 no change since last check
Trust Flow (Majestic)277
Citation Flow (Majestic)4336
Referring domains (Majestic)8387407

4 details filled in for both companies.

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