Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
GPTZero: Stronger focus on educational integrity reporting, though it lacks Copyleaks' deep enterprise compliance workflows. Copyleaks records 2,402,494 monthly visits with -14.1% month-over-month growth and Paid, Contact for Pricing pricing. GPTZero records 23,246,989 monthly visits with +32.5% growth and Freemium, Paid pricing.

Enterprise AI and plagiarism detection for content integrity
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | copyleaks.com | gptzero.me |
| Pricing Model | Paid, Contact for Pricing | Freemium, Paid |
| Monthly Visits | 2.4M (2,402,494) | 23.25M (23,246,989) |
| MoM Traffic Delta |
| -394.39K (-14.1%) |
| +5.7M (+32.5%) |
| Primary Market & Share | 🇺🇸 United States (53.2%) | 🇺🇸 United States (54%) |
|---|
| Direct Visits / mo | 758.5K | 7.53M |
|---|
| User Rating | 4.4 | 4.1 |
|---|
| Supported Platforms | Website | Website |
|---|

Enterprise AI and plagiarism detection for content integrity
Identifies AI-generated text across 30+ languages and leading LLMs, with reported accuracy above 99% on internal English test sets.
Searches 60 trillion websites, 16,000+ open-access journals and internal repositories to catch paraphrasing and hidden copying.
Extends detection to AI-generated video, audio and images so teams can verify content beyond text alone.
A scalable API and workflow integrations automate content analysis inside LMS platforms, publishing tools and enterprise systems.
AI detection and writing verification built for schools and editors
Paste text or upload a document and get an overall AI probability score plus a sentence-by-sentence breakdown of which parts look machine-written.
Flags AI text from major model families including ChatGPT, Gemini, Claude, Llama, and others, rather than training for a single model.
A Chrome extension and Google Docs add-on bring scanning into Gmail, Docs, Classroom, and other surfaces you already work in.
Checks content for copied passages from outside sources so you can separate AI-generation questions from originality questions.
Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.

SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
#2SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.

Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.

Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.

Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
AI detector that highlights evidence, not just a score

SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.

SpecialistHumanize AI text and check it against AI detectors

SpecialistCheck plagiarism, detect AI text and polish your writing in one place

Free AI content detector that flags machine-written text and helps you rewrite it

Combines plagiarism checking with multi-model AI detection for academic institutions, but has a smaller user community.

Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.
Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
AI detector that highlights evidence, not just a score
SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.
SpecialistHumanize AI text and check it against AI detectors
SpecialistCheck plagiarism, detect AI text and polish your writing in one place
Free AI content detector that flags machine-written text and helps you rewrite it
Combines plagiarism checking with multi-model AI detection for academic institutions, but has a smaller user community.