AI content detection and a full writing toolkit in one place
AI content detection and a full writing toolkit in one place
Copyleaks records 2,402,494 monthly visits with -14.1% month-over-month growth and Paid, Contact for Pricing pricing. GPTSyncScore records 0 monthly visits with — growth and Free pricing.

Measure how much ChatGPT changed your original text
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | copyleaks.com | chromewebstore.google.com |
| Pricing Model | Paid, Contact for Pricing | Free |
| Monthly Visits | 2.4M (2,402,494) | 0 (0) |
| MoM Traffic Delta | -394.39K (-14.1%) | 0 (—) |
| Primary Market & Share | 🇺🇸 United States (53.2%) | 🌐 Global (—) |
| Direct Visits / mo | 758.5K | 0 |
| User Rating | 4.4 | 3.6 |
| Supported Platforms | Website | Browser Extension |

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.

Measure how much ChatGPT changed your original text
Computes a numeric correlation score between your original text and the ChatGPT-generated version so you can quantify how much the content changed.
Paste the original text and the AI-generated text into the extension, then press Calculate for an immediate result.
The resulting score can be copied to the clipboard directly from the extension for use in notes, reports, or messages.
Built to help writers understand and disclose how much AI assistance shaped a given piece of text.
AI content detection and a full writing toolkit in one place
AI content detection and a full writing toolkit in one place
AI detection and writing verification built for schools and editors

SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.
SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.
Detect, humanize and verify AI content in one place
Detect, humanize and verify AI content in one place

AI detector, plagiarism and content-quality checks in one scan
AI detector, plagiarism and content-quality checks in one scan

Multilingual AI detector with sentence-level insight
Multilingual AI detector with sentence-level insight

Detect AI-generated text and images with benchmark-tested accuracy
Detect AI-generated text and images with benchmark-tested accuracy

Free AI detector with sentence-level insight and a humanizer
Free AI detector with sentence-level insight and a humanizer
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score

Accuracy-first plagiarism and AI detection for schools, universities, and teams
Accuracy-first plagiarism and AI detection for schools, universities, and teams

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

Free AI detector with sentence-level reports for ChatGPT, Gemini & Claude text
Free AI detector with sentence-level reports for ChatGPT, Gemini & Claude text