Copyleaks

copyleaks.com ↗

AI detection, plagiarism checking, and content moderation for text, images, and video.

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SI Score: 80/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

Ask SI about Copyleaks

Answers use saved listing facts and recorded sources.

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SI REVIEWBased on the site's own pages, in a directory managed by people

What it does

Copyleaks is a content integrity platform that checks text, images, and video for AI generation and plagiarism. It also offers a grammar checker and text moderation, plus reports and API access. Users can start a free account on the signup page or request a demo. The company lists enterprise, education, and developer use through API, LMS, browser, WordPress, and Google Docs integrations.

The site lists AI text, image, and video detection, a plagiarism checker, grammar checker, and text moderation as products. API documentation covers SDKs for Python, JavaScript, Java, C#, PHP, and Ruby, with authentication, rate limits, and webhooks. The API page describes endpoints for detecting AI-generated text, images, and videos, scanning code and images for plagiarism, checking citations, assessing writing, and moderating text across categories. The platform reports support for more than 30 languages in AI detection and more than 100 languages in plagiarism detection. Integrations include LMS platforms, a browser extension, WordPress, and Google Docs. A free signup route and a demo request route are both present.

Best for

Checking text, images, and video for AI generationPlagiarism detection in text and codeGrammar and writing feedbackContent moderation for unsafe material

SI Score

80/100

#1 in Writing & Content

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 28, 2026Score ceiling for this evidence: 84/100.

Product usefulness 80

Evidence

Copyleaks' fresh official quickstart supplies the missing operational evidence: obtain a token, submit text with a scan ID, and interpret classifications and the returned score. It states a 255-character minimum, a 48-hour token lifetime and the distinction between simulated sandbox results and credit-consuming real scans. This supports 80 for a bounded integration workflow; detector accuracy and misconduct conclusions are not validated. The synthetic catalogue run is excluded.

Limits: Source-researched AI assessment reviewed by a separate native AI worker. No hands-on product test or human verification is claimed.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown