Copyleaks AI Detector vs AI Undetectable

Which content detection tool is right for you? Compare features, pricing, and use cases to decide.

Copyleaks AI Detector

Free Tier

The most accurate AI detector, trusted by top organizations worldwide and backed by independent studies. It offers over 99% accuracy, supports 30+ languages, and covers various AI models. It can be bundled with Plagiarism Checker and Writing Assistant. The new AI Insights provides comprehensive analysis. The AI engine has been learning human writing style since 2015.

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AI Undetectable

Paid

AI text and image detector with Basic and Stealth humanizer modes for reviewing and revising AI-assisted drafts.

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Feature	Copyleaks AI Detector	AI Undetectable
Pricing	Free Tier	Paid
Category	Content Detection Tools	Content Detection Tools
Key Features	•Complete AI Model Coverage •Unprecedented Accuracy (over 99% accuracy and 0.2% false positive rate) •Military-Grade Security (GDPR compliance, SOC 2 and SOC 3 certification) •Detect Interspersed AI Content •Plagiarism and Paraphrased AI Detection	•Checks text for AI-likelihood signals •Reviews uploaded images with an AI image detector •Rewrites passages in Basic or Stealth mode with side-by-side comparison
Use Cases	✓AI Model Training ✓Academic Integrity ✓Governance ✓IP & Copyright ✓Unauthorized LLM Usage	✓Writers review AI-assisted drafts before publishing ✓Marketers revise campaign copy while comparing original and rewritten text ✓Teams check text and images in one workspace

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