Copyleaks Plagiarism Detector

AI-powered plagiarism and AI-content detection across 100+ languages

Data verified Oct 3, 2026

Pundit
Score

About Copyleaks Plagiarism Detector

Copyleaks is a cloud plagiarism and AI-content detector that scans text, documents, URLs, and source code against a large corpus of journals, websites, and code repositories, then returns detailed interactive reports. It's built for educators and academic institutions, enterprises, and publishers who need to verify originality and flag AI-generated writing, with cross-language matching and source-code detection setting it apart from single-purpose checkers. Out-of-the-box LMS integrations and an AI Detector API extend it into existing academic and enterprise workflows.

Commonly Cited Strengths & Limitations

Strengths

High accuracy and support for 100+ languages for plagiarism
API access included even on the lowest paid tier
Detects sophisticated evasion like paraphrasing and character manipulation
Integrates directly with major LMS platforms

Limitations

AI-content detection can be unreliable and produce false positives, sometimes flagging original human-written text as AI
AI detection can be evaded by changing a few words
Customer service reportedly won't reverse billing after cancellation/upgrade mistakes
Scanning can be slow for larger documents
Trial period is considered too short
Pricing seen as high, especially for students

Common Use Cases

Academic integrity and plagiarism checking in education
Detecting translated/cross-language plagiarism
Enterprise content integrity across departments
Checking content originality before publishing

Details

Pricing Model: Freemium
Starting Price: $8.99/mo
Headquarters: New York, NY
Category: Education & EdTech

Who is Copyleaks Plagiarism Detector for?

Educators

Teachers review assignments for originality and AI usage directly within their LMS grading interface.

Students

Students submit work through their normal course workflow to check originality before submission.

Enterprises

Organizations run AI and plagiarism detection across multiple departments with large-scale reporting.

Frequently Asked Questions

Is Copyleaks Plagiarism Detector free?

Copyleaks Plagiarism Detector offers a free plan, with paid plans starting at $8.99/mo.

Does Copyleaks Plagiarism Detector have an API?

Yes, Copyleaks Plagiarism Detector provides an API for developers.

What does Copyleaks Plagiarism Detector integrate with?

Copyleaks Plagiarism Detector integrates with Canvas, Moodle, Blackboard, Brightspace, Schoology, Sakai, Open LMS, Google Docs, and more.

Is Copyleaks Plagiarism Detector cloud-based or self-hosted?

Copyleaks Plagiarism Detector is offered as a cloud-based (SaaS) deployment.

What are the downsides of Copyleaks Plagiarism Detector?

AI-content detection can be unreliable and produce false positives, sometimes flagging original human-written text as AI Also, AI detection can be evaded by changing a few words

Who is Copyleaks Plagiarism Detector best for?

Copyleaks Plagiarism Detector is best suited for Educators, Students, Enterprises.

What can I use Copyleaks Plagiarism Detector for?

Common uses for Copyleaks Plagiarism Detector include academic integrity and plagiarism checking in education, detecting translated/cross-language plagiarism, enterprise content integrity across departments, checking content originality before publishing.

What is the best alternative to Copyleaks Plagiarism Detector?

Our reviewed alternatives to Copyleaks Plagiarism Detector are JPlag and Aegis Integrity. Open-source options: JPlag, Aegis Integrity.

How does Copyleaks Plagiarism Detector compare to Moodle?

Copyleaks Plagiarism Detector and Moodle are both used for education & edtech. See the full side-by-side comparison for pricing and feature differences.

Copyleaks Plagiarism Detector alternatives we reviewed

Reviewed when this listing was published; open-source options are marked.

See all reviewed alternatives →

JPlag
Open source
Open-source source-code plagiarism and collusion detector used by universities worldwide; runs fully locally and free.
Visit site →GitHub
Aegis Integrity
Open source
Open-source, offline academic-integrity checker combining plagiarism and AI-text detection; free to self-host.
Visit site →GitHub