Copyleaks - AI content detector
The 'AI Detector' by Copyleaks is a comprehensive tool designed to distinguish whether content was created by a human or an AI. It efficiently analyses the char...
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What is Copyleaks - AI content detector?
Copyleaks AI Content Detector is an online tool that identifies whether a piece of text is written by a human or by an AI model, including tools like ChatGPT, GPT‑5, Gemini, Claude, and others. It analyzes linguistic patterns, frequency ratios, parts of speech, syllable dispersion, and hyphenation to flag AI‑generated or mixed content, and it provides a percentage score indicating how likely the text is to be AI‑written. The platform supports over 30 languages and offers both a public web interface and a browser extension that lets users check text on web editors, learning platforms, and publishing sites without leaving the page.
Key features include high‑accuracy detection backed by third‑party studies, support for detecting paraphrased and blended AI content, and an AI Logic layer that explains why certain text is flagged by highlighting AI‑like phrases and possible source matches. For organizations and educators, Copyleaks provides API‑based integration, LMS connectors for Canvas, Moodle, Blackboard, and others, and enterprise‑grade security with GDPR, SOC 2/3, and other compliance standards. This makes the tool suitable for students checking essays, writers validating drafts, professionals ensuring human‑sounding content, and institutions monitoring academic integrity.
The detector is designed to support responsible AI use rather than to help users bypass detection; it helps users see where AI influence appears in their work so they can revise flagged sections and preserve their own voice. Copyleaks also adds a plagiarism checker and AI‑generated source‑code detection into the same ecosystem, creating an all‑in‑one content‑integrity suite for individual creators, teams, and large enterprises. With generous free‑tier limits and tiered paid plans, the tool is positioned as both an accessibility‑first AI checker and a scalable enterprise‑grade detection platform.
Copyleaks - AI content detector pricing
Pricing model: Paid
Copyleaks offers a free AI detector tier that gives new users a limited number of free credits to explore AI detection and plagiarism checking before upgrading. On the web platform, unauthenticated users can scan up to 25,000 characters per scan, and creating a free account unlocks additional monthly scan credits with the highest free allowance among major AI detectors. The Personal and Pro plans include full access to AI detection, plagiarism checks, detailed reports, and AI Logic with explainable detection insights; exact monthly and annual pricing and credit limits are listed on the Copyleaks pricing page. For schools and enterprises, custom pricing is available for API access, LMS integrations, and large‑scale deployments, negotiated directly with Copyleaks sales.
Copyleaks - AI content detector pros
- Over 99% accuracy in detecting AI‑generated text
- Extremely low false‑positive rate of around 0.03%
- Supports over 30 languages
- Detects content from ChatGPT, GPT‑5, Gemini, Claude, DeepSeek, Llama, Rytr, Jasper, and more
- Can identify mixed text where AI and human writing are blended
- Highlights AI‑like phrases and explains why content is flagged using AI Logic
- Detects AI‑generated source code and licensing issues in code
- Free tier allows up to 25,000 characters per scan without logging in
- Free account unlocks additional monthly scan credits beyond the unauthenticated limit
- Integrates as a browser extension for Chrome and Edge for real‑time checks on web pages
- Offers a Google Docs add‑on for in‑doc AI and plagiarism checks
- Provides LMS integrations for Canvas, Moodle, Blackboard, D2L, Schoology, and others
- Offers enterprise‑grade API for embedding detection into custom platforms
- Includes customizable sensitivity levels to tune detection thresholds
- Emphasizes data privacy with GDPR, SOC 2/3, PCI DSS, and NIST RMF compliance
- Designed to distinguish Grammarly’s basic grammar features from AI rewriting and reduce false positives
- Supports both short snippets and long documents up to around 2,000 pages on the web platform
- Enables sentence‑by‑sentence feedback and re‑scanning after edits
- Helps users understand AI usage patterns and refine their own voice rather than evade detection
- Trained on trillions of human‑written documents for robust pattern recognition
Copyleaks - AI content detector cons
- Requires a minimum text length (e.g., 255–350 characters) for reliable results
- May produce less confidence on very short or heavily edited fragments
- Accuracy can vary slightly across some non‑native or low‑resource languages
- Advanced AI Logic and deeper insights require a paid or logged‑in account
- Enterprise and API features are not available on the free tier
- Browser‑extension scans are capped at 25,000 characters per use
- Some Grammarly‑style AI rewriting features can still trigger detection flags
- Users must manually interpret and revise flagged sections rather than getting automatic rewriting
Frequently asked questions about Copyleaks - AI content detector
How does the Copyleaks AI detector work?
When a large language model generates text, it relies on statistical patterns from its training data; Copyleaks trains its detector on massive sets of human‑written documents and then looks for deviations from those patterns. The system analyzes linguistic features such as frequency ratios of phrases, parts of speech, syllable dispersion, and hyphen usage to flag text that strongly resembles AI‑generated output and separates it from typical human writing styles.
What AI models can the Copyleaks AI detector identify?
The detector can identify content produced by GPT‑5, GPT‑4, ChatGPT, Claude, Gemini, DeepSeek, Llama by Meta, Bloom, Rytr, Jasper, and other major generators, with ongoing updates to support new models as they appear. It is designed to catch AI‑like patterns regardless of the specific front‑end interface, as long as the underlying engine produces similar statistical signatures.
Is there a free AI detector on Copyleaks?
Yes, Copyleaks offers a free AI detector tier that gives every new user a limited number of free credits to test AI and plagiarism detection before committing to a paid plan. Unauthenticated users can also scan up to 25,000 characters per scan without logging in, and signing up for a free account increases the monthly scan allowance beyond that baseline.
Does Copyleaks detect mixed human and AI text?
Yes, the Copyleaks AI detector can identify sections where human‑written text is interwoven with AI‑generated content and will flag the AI‑like portions. The report can distinguish between elements that appear human‑authored and those that match AI‑generation patterns, even when the text has been heavily paraphrased or edited.
What are the minimum and maximum text requirements for scans?
For the browser extension, the minimum text length is 350 characters and the maximum is 25,000 characters per scan. For the web‑based platform, the minimum is 255 characters and the maximum is effectively around 2,000 pages of text, with no hard character cap, allowing very long documents to be analyzed.
How accurate is the Copyleaks AI detector?
Independent testing shows the Copyleaks AI detector achieving over 99% accuracy in identifying AI‑generated content, with a false‑positive rate of about 0.03% for human‑written text. The models are continuously refined with user feedback and new data, and the company highlights third‑party studies that validate its position as one of the most accurate AI detectors available.
Does the Copyleaks AI detector flag Grammarly as AI content?
Copyleaks distinguishes between Grammarly’s basic spell‑check and grammar features, which typically do not trigger detection, and Grammarly’s AI‑based rewriting features, which can produce AI‑like phrasing and therefore may be flagged. The detector is tuned to focus on generative rewriting behavior rather than minor corrections, aiming to keep false positives low for non‑AI tools.
What data protection and compliance standards does Copyleaks meet?
Copyleaks holds SOC 2 and SOC 3 certifications, is GDPR‑compliant, and meets PCI DSS and NIST RMF standards for data handling and security. The platform uses enterprise‑grade encryption and secure infrastructure to protect user documents, making it suitable for organizations in regulated industries and educational institutions.
Can the AI detector be integrated into learning management systems?
Yes, Copyleaks offers LMS integrations for platforms such as Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai, allowing educators to embed AI and plagiarism detection directly into their course workflows. Instructors can run scans from inside the LMS and use the results to guide student feedback and academic‑integrity discussions.
Is there an API for enterprise use of the AI detector?
Copyleaks provides an enterprise‑grade API that lets organizations embed AI detection into their own platforms, applications, or content pipelines with fully white‑labeled integration. This API supports custom sensitivity settings, batch scanning, and tight security controls, tailored to businesses, publishers, and academic institutions that need scalable, automated detection at scale.