Copyleaks review: AI content detection and plagiarism checker pricing, accuracy, LMS integrations, and enterprise API options for 2026.
Category
AI Writing
Pricing
Freemium credit-based subscription, plus separate enterprise and API/model-integration pricing, from Free plan available (~10 pages/month); paid individual plans start at 7.99 USD per month
Verified
Not yet
Last updated
July 19, 2026
Founded
2015
Headquarters
New York, New York, United States (with a significant Tel Aviv, Israel operations base)
What Copyleaks Does
Copyleaks combines plagiarism detection and AI-generated content detection into a single scan and report, checking submitted text against web, academic, and internal content sources while also flagging AI-generated writing from models like GPT, Gemini, and Claude.
Beyond text, it offers Codeleaks for detecting AI-generated or plagiarized source code, and an AI Image Detector that uses forensic analysis to flag AI-generated or manipulated images with a visual overlay of suspect regions.
How Copyleaks Pricing Works
A free plan offers around 10 pages of scanning per month for occasional spot checks. Individual paid plans range from 7.99 USD/month (AI detection only) to 13.99 USD/month (combined AI and plagiarism detection), each including 1,200 credits covering up to roughly 300,000 words.
An annual plan at 899.88 USD per year includes 25 user seats for small teams, while enterprise model-integration pricing starts at 4,500 USD per year for larger organizations needing deeper API access.
Accuracy and Known Limitations
Copyleaks reports over 99 percent accuracy for AI detection across major language model outputs, and independent studies have found around 93 percent sensitivity for detecting GPT-4-generated content specifically.
Like other AI detectors industry-wide, accuracy drops when AI-generated text has been manually edited or paraphrased afterward, a limitation worth factoring into high-stakes decisions such as academic integrity cases.
Key Features
Combined plagiarism and AI detection report — Scans text for both plagiarism matches and AI-generated content signals in a single unified report.
Broad language model coverage — AI detection covers outputs from major models including GPT, Gemini, and Claude, with claimed accuracy above 99 percent, updated as new models release.
Codeleaks source code detection — A specialized tool identifies AI-generated or plagiarized source code, extending detection beyond prose.
AI image detector — Uses forensic image analysis and machine learning to flag AI-generated or manipulated images, with a visual overlay of suspect regions.
LMS integrations — Direct integrations with Canvas, Moodle, and Blackboard support academic institutions checking student submissions.
Browser extension and web app — A Chrome extension and web application allow quick scanning without leaving the browser.
Developer API — A full API lets developers embed plagiarism and AI detection directly into their own products and workflows.
Credit-based multi-seat plans — Paid plans include multiple user seats and a shared credit pool, suiting small teams as well as individuals.
Pros & Cons
Pros
Combines plagiarism and AI detection in one report rather than separate tools
Covers text, source code, and images, unlike single-modality detectors
Deep LMS integrations for Canvas, Moodle, and Blackboard
Claimed accuracy above 99 percent across major AI model outputs
Developer API available for custom integrations
Free tier available for occasional spot checks
Cons
Free tier is limited to about 10 pages per month, too low for regular use
Accuracy drops on AI text that has been manually edited or paraphrased after generation
Credit-based pricing can be confusing to estimate against actual usage volume
Enterprise model-integration pricing starts high at 4,500 USD per year
Company headcount is still relatively small, at under 100 employees as of early 2026
Pricing
Free 0 USD monthly
AI Content Detector 7.99 USD monthly
Plagiarism Detector 8.99 USD monthly
AI and Plagiarism Detection 13.99 USD monthly
Annual 899.88 USD annual
Enterprise model integration starting at 4,500 USD annual
Frequently Asked Questions
What is Copyleaks?
Copyleaks is an AI-powered platform that detects plagiarism, AI-generated text, AI-generated source code, and AI-generated or manipulated images, offering combined reports for text integrity checks.
How much does Copyleaks cost?
Individual plans range from 7.99 USD/month for AI detection only up to 13.99 USD/month for combined AI and plagiarism detection, with a free plan offering about 10 pages per month and enterprise pricing starting at 4,500 USD per year.
How accurate is Copyleaks' AI detector?
Copyleaks claims over 99 percent accuracy across major language models, though independent studies show around 93 percent sensitivity for GPT-4-generated content specifically, with lower accuracy on edited or paraphrased AI text.
Does Copyleaks integrate with learning management systems?
Yes, Copyleaks integrates directly with Canvas, Moodle, and Blackboard for academic institutions checking student submissions.
When was Copyleaks founded?
Copyleaks was founded in 2015 by Alon Yamin and Yehonatan Bitton.
Where is Copyleaks based?
Copyleaks is headquartered in New York, New York, with a significant operations base in Tel Aviv, Israel.
Can Copyleaks detect plagiarized source code?
Yes, through Codeleaks, a specialized tool for identifying AI-generated or plagiarized source code.
Does Copyleaks have a free plan?
Yes, the free plan offers around 10 pages (about 2,500 words) of scanning per month with limited concurrent scans.