Copyleaks is an AI content detector and plagiarism checker used by universities, schools and businesses. It identifies AI-generated text in 30+ languages, detects AI images and checks plagiarism in 100+ languages, with combined reports. Personal plans start at $13.99 a month billed yearly.
What is Copyleaks?
Copyleaks started as a plagiarism detection platform and became one of the best-known AI content detectors after the rise of ChatGPT. It is used by schools, universities, Fortune 500 companies and developers to check whether text was written by AI and whether it copies existing content.
Its AI Logic reports combine AI detection and plagiarism results in one view and highlight which passages look AI-written and why. Copyleaks also offers AI image detection, a browser extension, a Google Docs add-on, LMS integrations for education and an API for developers who want to build detection into their own products.
Copyleaks key features
AI text detection
Detect content written by ChatGPT, Claude, Gemini and other models.
AI image detection
Check whether images were generated by AI.
Plagiarism checker
Compare text against billions of web pages and documents.
AI Logic reports
See combined AI and plagiarism results with explanations.
30+ languages
AI detection in 30+ languages and plagiarism in 100+.
Cross-language detection
Find plagiarism translated from other languages (Pro).
Browser extension
Scan text on any web page and save results.
Google Docs add-on
Check documents right inside Google Docs.
API and LMS integrations
Add detection to your apps, Canvas, Moodle and more.
Copyleaks pricing plans (2026)
Copyleaks has two individual AI detector plans plus Education and Enterprise plans. Prices below are per month billed yearly; monthly billing costs more.
Personal
1,200 credits a year: 300,000 words or 1,200 images. AI + plagiarism reports, extension and Google Docs add-on.
Pro
12,000 credits a year: 3M words or 12,000 images, 25 seats, website scanning and analytics.
Education
Priced by number of students, with LMS integrations.
Enterprise
Custom volume, security and API options for businesses.
Monthly billing: Personal $16.99 and Pro $99.99. Check the latest prices on the official Copyleaks pricing page.
How to use Copyleaks
- 1
Go to copyleaks.com and create an account.
- 2
Choose AI detection, plagiarism or both.
- 3
Paste text, upload a file or scan a URL.
- 4
Read the AI Logic report to see flagged passages.
- 5
Share the report or use the extension and Google Docs add-on.
Who should use Copyleaks?
Teachers and universities
Check student work for AI and plagiarism.
Publishers and editors
Verify that content is original.
SEO and content teams
Audit freelancer and website content.
Developers
Build AI detection into apps with the API.
Pros and cons
What we like
- Detects both AI text and AI images
- Combined AI and plagiarism reports
- Supports many languages
- API and LMS integrations
Watch out for
- No full free plan
- Credits limit how much you can scan
- No AI detector is 100% accurate
- Pro plan is expensive for individuals
Best Copyleaks alternatives
Copyleaks is one of the most complete AI detection platforms, combining AI text, AI image and plagiarism checks in one place. It is a strong choice for educators and content teams. Like all detectors, treat its results as a signal to review, not as final proof.
Copyleaks FAQs
Is Copyleaks free?
Copyleaks has no full free plan on its pricing page; paid plans start at $13.99 a month billed yearly.
How much does Copyleaks cost?
Personal costs $13.99 a month and Pro $74.99 a month billed yearly, or $16.99 and $99.99 monthly.
How accurate is Copyleaks?
Copyleaks is among the more accurate AI detectors, but no detector is perfect, so results should be reviewed by a person.
Can Copyleaks detect ChatGPT?
Yes. It detects text from ChatGPT and other popular AI models.
Can Copyleaks detect AI images?
Yes. Copyleaks includes AI image detection.
Does Copyleaks check plagiarism?
Yes. It checks plagiarism in 100+ languages and can combine it with AI detection.
