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Home 〉 AI Detector


AI DETECTOR BY COPYLEAKS

The most accurate AI content detector and ChatGPT checker, trusted by top
organizations worldwide and backed by independent studies.
x

Certain platforms, like Grammarly, use ChatGPT and other genAI models for key
functionalities and can be flagged as potential AI content. Read the article



THE AWARD-WINNING ENTERPRISE AI DETECTOR HAS YOU FULLY COVERED.

The Copyleaks AI detection tool offers over 99% accuracy, supports 30+
languages, and covers GPT, Gemini, and Claude, plus newer models as they’re
released.

Bundle with the award-winning Plagiarism Detector, Codeleaks, and Writing
Assistant to create a complete content suite.


AI DETECTION NEARLY A DECADE IN THE MAKING

Since 2015, our AI-powered engine has been learning the writing style of humans.
We’ve collected and analyzed trillions of pages from user-submitted inputs and
other sources.


WE ARE LOOKING FOR HUMAN CONTENT, NOT AI

Our AI checker is trained to recognize human writing patterns. It flags text as
potential AI when it detects deviations from these patterns and specific AI
signals.

No one wants to fear false positives that can lead to untrue accusations. We
tested over 1 million texts with a resulting rate of false positives of 0.2%. 

Thanks to machine learning models, we can test and fine-tune AI models,
retraining them in real-time with new data and feedback. Our goal is always to
be the most accurate tool for AI detection.




GET STARTED TODAY WITH THE COPYLEAKS AI DETECTOR TOOL

Get a Demo
Try It Now


KEY FEATURES


COMPLETE AI MODEL COVERAGE



Go beyond a simple ChatGPT detector—get detection for all AI models, including
Gemini, Claude, and any new models as they are released.


UNPRECEDENTED ACCURACY

The AI Detector boasts over 99% accuracy and an industry-low false positive rate
of just 0.2%.


PLAGIARISM AND PARAPHRASED AI DETECTION

Have full visibility of your content, identifying potential plagiarism or
paraphrasing within AI-generated text.


AI-GENERATED SOURCE CODE DETECTION

The AI Detector thoroughly scans AI-generated code for potential issues,
including licensing violations and security vulnerabilities.


DETECT INTERSPERSED AI CONTENT

The Copyleaks AI text detector can accurately spot AI-generated text, even when
it’s carefully mixed with human writing.


MILITARY-GRADE SECURITY

All Copyleaks products boast military-grade security, GDPR compliance, and SOC 2
and SOC 3 certification. 


AI DETECTOR INTEGRATIONS


FOR ENTERPRISES

Bring the power of the Copyleaks AI Detector to your native platform with
seamless, fully white-labeled API integration.


FOR EDUCATIONAL INSTITUTIONS

Simple LMS integration empowers learning and originality while keeping
everything you need in one convenient place.


AI DETECTION ACROSS MULTIPLE LANGUAGES

 * English
 * Spanish
 * French
 * Portuguese
 * German
 * Italian
 * Russian
 * Polish
 * Romanian
 * Dutch
 * Swedish
 * Czech
 * Norwegian
 * Korean
 * Japanese
 * Chinese (Simplified)
 * Chinese (Traditional)
 * Arabic
 * Bengali
 * Bulgarian
 * Croatian
 * Greek
 * Hebrew
 * Hindi
 * Hungarian
 * Serbian
 * Thai
 * Turkish
 * Ukrainian
 * Vietnamese

See a full list of supported languages & accuracy.

Ready to get started with the
AI Detector?
Get a Demo
Try It Now


AI DETECTOR USE CASES


AI MODEL TRAINING

Safeguard your AI system by ensuring your models are trained exclusively on
human-written content, not AI-generated. 

See Full Use Case


ACADEMIC INTEGRITY

Check for AI writing and verify authenticity within all your academic content,
from long-form essays to source code.

See Full Use Case


GOVERNANCE

Mitigate risks, protect your copyright and IP, and establish guardrails for
responsible GenAI adoption across your organization.

See Full Use Case


PUBLISHING & COPYWRITING

Ensure you publish original and authentic content to avoid potential search
engine penalties and other risks. Additionally, verify that your IP stays safe
from LLMs that may use it as training data.

See Full Use Case


OAKLAND UNIVERSITY CASE STUDY

Learn how Oakland University adopted Copyleaks and changed the conversation
around AI and plagiarism among their faculty and staff.

Read Full Case Study


CAMPAIGN KPIS

Ease of use & Integration, Cost-effectiveness, Customer Support, Security

It is imperative that articles submitted by our writers are not only 100%
unique, but also written by humans without the assistance of AI, particularly
considering Google has been clear it will devalue content that is written by AI
or simply a rehash of existing content. I use Copyleaks to ensure the
authenticity of all content that gets posted to our site.

 Lowell Christensen, CEO, SafeSearchKids




AI DETECTOR IS EVEN BETTER WHEN PAIRED.

A comprehensive, all-in-one platform designed to ensure complete content
integrity and transparency.

Plagiarism Detector

Get award-winning plagiarism detection in over 100 languages, identify multiple
forms of paraphrasing, and much more.

Codeleaks

Proactively mitigate risk and have complete transparency with the only solution
that detects AI-generated code and more.

Writing Assistant
Empower your writing with the most accurate tool for grammar corrections,
sentence structure, tone suggestions, overall mechanics, and more.
 
Gen AI Governance

Enforce enterprise-wide policies, ensure responsible generative AI adoption, and
proactively mitigate all potential risks.

AI Grader

A revolutionary solution for efficiently and accurately grading tens of
thousands of standardized tests at the state, national, and university-wide
levels.




Ready to get started with the AI Detector?
Get a Demo
Try It Now


FREQUENTLY ASKED QUESTIONS

How is it possible to determine if something is AI-generated?

When a Language Model writes a sentence, it uses all its pre-training data to
make a response based on statistics. This is significantly different from how
humans write. To our AI writing detector, the presence of an AI text generator
becomes clear when compared to a large collection of human writing.

What models can you detect?

We can detect the latest models of the following LLMs:

 * ChatGPT  
 * Gemini
 * Claude
 * Jasper 3
 * T5

Does Copyleaks offer a free AI detector?

You can experience free AI detection on a trial basis by registering for a free
Copyleaks account. 

How was the Copyleaks AI detection model trained?

We can recognize AI text patterns utilizing multiple techniques.

Since 2015, we’ve collected, ingested, and analyzed trillions of crawled and
user-sourced content pages. Our data comes from thousands of universities and
enterprises worldwide. We use that data to train our models to understand how
humans write.

Also, utilizing AI technology, the AI detector can accurately recognize the
presence of other AI-generated text. It knows how to identify and flag the
signals it leaves behind. That attention to detail adds a layer of accuracy to
the process.

Learn more about our AI Detector testing methodologies.

How is your AI detection any different from other detectors?

Several significant differences exist between other AI detector tools and ours.

For example:

 

 * We use large-scale, credible data combined with machine learning and broad
   adoption to refine our understanding of text patterns. This results in over
   99% accuracy—better than any other AI detector, and it’s improving daily.
 * As an enterprise platform, we offer seamless API and LMS integrations,
   allowing you to bring AI Detector directly into your system at scale.
 * The AI Detector is one of the most advanced platforms for reading and
   analyzing source code, including AI-generated code. It detects plagiarism
   even when code has been modified, such as altering variables or entire
   sections.
 * Our AI Detector doesn’t flag non-AI features of Grammarly, like spell check
   and grammar. In contrast, another AI detector incorrectly flagged 20% of
   Grammarly’s non-AI features as AI content—a significant 20% false positive
   rate. 
 * All Copyleaks products, including the AI Detector, are fully GDPR-compliant
   and SOC 2 and SOC 3-certified, ensuring the privacy and security of personal
   data audited by KPMG.

Why is there a minimum and maximum text requirement for some AI content scans?

Our models need a certain volume of text to accurately determine the presence of
AI. The higher the character count, the easier it is for our technology to
determine irregular patterns, which results in a higher confidence rating for AI
detection. 

The ideal text requirements for each of our AI offerings are as follows: 

 

AI Detector Browser Extension 

Minimum: 350 characters 

Maximum: 25,000 characters 

 

AI Detector Web-Based Platform

Minimum: 255 characters 

Maximum: 2,000 pages (There is no character maximum)

How do you avoid false accusations?

The likelihood of human-written content being mistakenly labeled as AI-generated
is just 0.2%—the lowest among AI detectors.

 

We’re committed to fostering authenticity and digital trust by creating secure
environments for idea-sharing and confident learning. Ensuring complete
accuracy, especially in avoiding false accusations, is vital to this mission.

To address this, we’ve taken several precautions:

 * Our algorithms are designed to recognize human-generated text. Focusing on AI
   detection alone tends to lower accuracy and increase false positives.
 * We’ve implemented a feedback loop where users can rate result accuracy. This
   helps us learn from rare false positives and continuously improve our models.
 * We only introduce new model detection after thorough testing. We use beta
   testers for added assurance once internal testing meets a high confidence
   threshold.

Have independent third parties tested the accuracy of the AI Detector?

Yes. In July 2023, four researchers worldwide published a study on the Cornell
Tech-owned arXiv. The study declared Copyleaks AI Detector the most accurate for
checking and detecting large language models (LLM) generated text. 

Since then, additional independent third-party studies have been released. Each
one has highlighted the AI detector’s accuracy and efficiency.

Read more about these third-party studies.





Does the Copyleaks AI Detector flag writing tools like Grammarly as AI content?

Only certain features of writing assistants can cause your content to be flagged
by the AI Detector.

For example, Grammarly has a genAI-driven feature that rewrites your content to
help improve it, shorten it, etc. As a result, this reworked content could get
flagged as AI since it was rewritten by genAI. 

However, the Copyleaks Writing Assistant does not get flagged as AI. It won’t
flag content that Grammarly changed to fix grammatical errors, mechanical
issues, etc. This is because it does not use (or uses minimal) genAI to power
these features.

Read the full analysis blog post here.

What data protection does Copyleaks have?

At Copyleaks, our products routinely verify privacy, security, and compliance
control independently. We aim to achieve certifications against global
standards. We believe this is the clearest way to earn and retain the trust of
the millions of Copyleaks users worldwide. 

 

Our current Copyleaks certifications and compliance standards include: 

 * SOC2 & SOC3
 * GDPR
 * PCI Payment Card Industry Data Security Standard
 * NIST Risk Management Framework (RMF)

 

Please visit our Compliance and Certifications and Security Practices pages to
learn more.

Can you detect mixed text where human-created text has been amended with
AI-generated text?

Yes. Our detection report highlights the specific elements of text written by
humans and labels these separately from those written by AI, even if the text
has been interspersed.

Read our Complete AI Detector FAQ Guide

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