Copyleaks
Content integrity platform that detects AI-generated text, images and video and checks for plagiarism.
Copyleaks is a content analysis platform that identifies AI-generated material and plagiarism. Copyleaks scans text for both in a single report, examines images and video for signs of AI generation, and offers grammar checking and text moderation. Copyleaks is used through its web app, a browser extension, a Google Docs add-on, LMS integrations or an API.
Best for Schools, publishers and companies that need to verify whether writing or media is original and whether AI was involved, at individual or institutional scale.
- Listed in
- AI Content Detection
- Platforms
- Web, API, Browser extension, Plugin
- Pricing model
- Subscription
- API
- Yes
- Made by
- Copyleaks
- Added
Last verified: . Information taken from copyleaks.com.
What is Copyleaks?
Copyleaks is a content integrity company, active since 2015, that began with plagiarism detection and now covers AI detection across text, images and video. Its text scanning reports AI-written passages and matched sources together, and the company says AI detection works in over 30 languages and plagiarism detection in more than 100. Detection also targets paraphrasing, character manipulation and cross-language copying. An image detector marks regions likely to have been generated or altered by AI. For organisations there are solutions for academic integrity, generative AI governance, source code verification and monitoring whether language models have used a publisher's content. Individuals subscribe to Personal or Pro plans that include monthly credits, while Enterprise and Education plans are arranged with sales. Integrations include an API, learning management systems, WordPress, Google Docs and browsers.
Key Features
AI Text Detection
Flags passages likely written by language models such as ChatGPT, Gemini, DeepSeek and Claude.
Plagiarism Checking
Compares text against websites, journals and internal documents, including paraphrased or translated matches.
AI Image Detection
Analyses an image and overlays the areas most likely to be AI-generated or edited.
Unified Report
Combines AI and plagiarism findings for a text in one scan result.
LMS Integrations
Connects to learning platforms including Blackboard, Canvas, Moodle, Schoology and D2L Brightspace for classroom use.
API Suite
Exposes AI detection, plagiarism checking, grammar checking and text moderation for custom workflows.
Screenshots
Use Cases
- Reviewing Student Submissions
- An instructor scans essays inside the LMS and sees AI and similarity findings next to each paper.
- Editorial Checks
- A newsroom verifies freelance articles through the WordPress integration before publication.
- Governing AI Use at Work
- A compliance team sets organisation-wide detection policies for generated content.
- Verifying Source Code
- An engineering lead checks code for unlicensed reuse during AI-assisted development.
- Screening Handwritten Work
- A teacher uploads a photo of a paper assignment and the text is extracted and compared.
Things to know
- Accuracy figure is self-tested
- The site notes that its stated accuracy rating comes from internal testing on English-language datasets.
- Image scans cover AI only
- Image detection reports AI presence and does not look for copied images.
- Pro includes team seats
- The Pro plan comes with 25 user seats, and more can be purchased.
- Institutional pricing is custom
- Education pricing depends on how many full-time students an institution has, and Enterprise terms are set with sales.
FAQs
What is Copyleaks?
Copyleaks is a content integrity platform that detects AI-generated text, images and video and checks writing for plagiarism.
What is Copyleaks used for?
Copyleaks is used by schools, businesses and individuals to confirm originality, enforce academic integrity and oversee how generative AI is used.
How much does Copyleaks cost?
Copyleaks sells Personal and Pro subscriptions with monthly credits, and custom Enterprise and Education plans. See the official pricing page for current prices.
How do Copyleaks credits work?
One Copyleaks credit covers a scan of up to 250 words or one image. The allowance resets each billing cycle, and extra one-time credits can be bought.
Does Copyleaks have an API?
Yes. Copyleaks offers APIs for AI detection, plagiarism checking, grammar checking and text moderation.
What languages does Copyleaks support?
Copyleaks says its AI detection covers more than 30 languages and its plagiarism detection more than 100.
Can Copyleaks check images?
Yes. Copyleaks scans images for AI generation in formats including JPG, PNG, WEBP, BMP and HEIC, but it does not check images for plagiarism.
Does Copyleaks have a browser extension?
Yes. Copyleaks lists a browser extension for Chrome, Edge and Firefox on its paid individual plans.
Who it's for
- Educators
- Universities
- Publishers
- Enterprises
- Developers
- Students
Used in these workflows
- AI tools for writing a research paper without handing over the thinkingStage 7: Citations and originality check
Each guide lists the stages of one job and the tools that help at each stage. All guides
Comments
No comments yet. If you have used Copyleaks, tell other readers how it went.
Alternatives to Copyleaks
| Tool | Free plan | Starting price | API |
|---|---|---|---|
 AI or NotAI detector for images, text, audio and video, including deepfakes, available on the web and through an API. |
Yes | — | Yes |
 Originality.aiAI content detector with plagiarism, fact, grammar and readability checks for publishers, agencies and schools. |
Yes | $12.95/mo | Yes |
 PlagiarismCheck.orgPlagiarism checker and AI content detector for schools, universities, businesses and individual writers. |
— | — | Yes |
 AI HumanizeOnline rewriter that reworks AI-generated text into more natural wording, with style presets and an AI detector. |
— | $6/mo | Yes |
 IsgenMultilingual AI content detector with sentence- and phrase-level analysis, plus plagiarism and writing tools. |
Yes | — | Yes |
Listed in the same category as Copyleaks. A starting price appears only where we checked it on the maker’s pricing page; a dash means not checked or not published. All AI Content Detection tools