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Copyleaks AI Detector
What Copyleaks AI Detector is
Copyleaks AI Detector identifies AI-written text, including writing that mixes AI and human passages. It supports more than 30 languages and detects content from GPT-5, GPT-4, ChatGPT, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr, Jasper, and other tools. Its AI Logic feature explains why text was flagged, reports AI phrase frequency, and can identify text also published elsewhere. The web detector scans up to 25,000 characters without login; the website platform requires at least 255 characters and allows up to 2,000 pages. The Chrome and Edge extension accepts 350 to 25,000 characters, and a Google Docs add-on and education LMS integrations extend access to other workflows. Its white-labeled API can bring detection into an organization’s own workflow. Personal costs $13.99 a year with annual billing or $16.99 a month; Pro costs $74.99 a year with annual billing or $99.99 a month. Enterprise and Education use custom pricing. A free plan and free trial are available. Copyleaks says data is encrypted at rest with AES-256 and reports SOC 2 and SOC 3 certifications and GDPR support.
Who it suits
It suits students, writers, professionals, creators, educational institutions, and enterprise teams needing AI-text detection. Education and enterprise plans include dedicated customer success resources; Education also includes tailored onboarding and training.
What it does well
- Detects AI writing in more than 30 languages.
- AI Logic explains flags and AI phrase frequency.
- Scans up to 25,000 characters without login.
- Chrome, Edge, and Google Docs integrations are available.
- API access and batch scanning are available.
What to know first
- Website scans require at least 255 characters.
- Browser extension scans require 350 to 25,000 characters.
- Enterprise and Education pricing is custom.
Limits
The web detector scans up to 25,000 characters without login, and the website platform requires at least 255 characters. Personal includes 100 unified credits per month with monthly billing or 1,200 with annual billing; Pro includes 1,000 per month or 12,000 annually. The listed allowances correspond to up to 25,000 or 300,000 words for Personal and 250,000 or 3,000,000 words for Pro, respectively.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Personal (annual billing) | $167.88 billed annually · 1,200 unified credits: up to 300,000 words or 1,200 images · AI detection in 30+ languages · Browser extension · Google Docs add-on | $167.88 a year |
| Personal | AI detection 30+ languages · plagiarism 100+ languages · 100 credits · 25,000 words or 100 images · browser extension · Google Docs | $16.99 a month |
| Personal (monthly billing) | Monthly subscription · 100 unified credits: up to 25,000 words or 100 images · AI detection in 30+ languages · Browser extension · Google Docs add-on | $16.99 a month |
| Pro (annual billing) | $899.88 billed annually · 12,000 unified credits: up to 3,000,000 words or 12,000 images · 25 user seats · Advanced detection filters · Website scans · Analytics dashboard | $899.88 a year |
| Pro (monthly billing) | Monthly subscription · 1,000 unified credits: up to 250,000 words or 1,000 images · 25 user seats · Advanced detection filters · Website scans · Analytics dashboard | $99.99 a month |
| Pro | Everything in Personal · 25 seats · advanced filters · website sitemap scanning · cross-language detection · analytics · 1,000 credits · 250,000 words or 1,000 images | $99.99 a month |
| Enterprise | Custom pricing · API access · LMS integration · private or on-premises hosting options | On request |
| Education | Custom pricing · LMS integrations · institution analytics · dedicated customer success · private cloud | On request |
As copyleaks.com lists them, read 4 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Copyleaks AI Detector website.
- Use the web detector to scan up to 25,000 characters without logging in.
- Create an account to receive limited free credits, or choose a listed Personal or Pro subscription.
- Install the Chrome or Edge extension or add the Google Docs add-on for those workflows.
- For an organization, review the Education or Enterprise plan and its integrations or API options.
Verdict
Copyleaks combines multilingual AI-text detection with explanations, integrations, and an API. Its scan requirements and plan limits are worth checking against the size and workflow of the material you need to review.
Questions
Is there a free plan?
Yes. Copyleaks offers a free plan, and new users receive limited free credits. The web detector allows scans up to 25,000 characters without login.
What does Personal cost?
Personal is listed at $13.99 a year with annual billing, billed $167.88 annually, or $16.99 a month with monthly billing.
What does Pro cost?
Pro is listed at $74.99 a year with annual billing, billed $899.88 annually, or $99.99 a month with monthly billing.
Which platforms and integrations are available?
Platforms include API, extension, and web. The extension supports Chrome and Edge; integrations include Google Docs and the Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai education LMS platforms.
Does Copyleaks offer API access?
Yes. The API can be white-labeled for use in a customer’s own workflow.
What security measures does Copyleaks describe?
Copyleaks says data is encrypted at rest with AES-256, reports SOC 2 and SOC 3 certifications, and supports GDPR compliance. It also offers private-cloud or on-premises hosting options and regional hosting.
Facts from Copyleaks AI Detector's own pages
- Accuracy claim
- The maker advertises more than 99% AI-detection accuracy and a 0.03% false-positive rate. · copyleaks.com, 21 Oct 2026
- AI Logic
- AI Logic explains flagged results with AI phrases, source matches and statistical reasons. · copyleaks.com, 21 Oct 2026
- API
- The developer product is a REST API returning section-level human or AI classifications, an overall summary and explanations. · docs.copyleaks.com, 21 Oct 2026
- Browser and document integrations
- The detector offers a browser extension for Chrome and Edge and a Google Docs add-on. · copyleaks.com, 4 Oct 2026
- Browser extension
- Copyleaks provides a Chrome, Edge and Firefox extension for checking highlighted web content. · copyleaks.com, 21 Oct 2026
- Company location
- Copyleaks lists its address as 115 E 23rd St., 7th Fl, New York, NY 10010. · copyleaks.com, 4 Oct 2026
- Company profile
- LinkedIn lists Copyleaks as a privately held New York software company founded in 2015 with 51–200 employees. · linkedin.com, 21 Oct 2026
- Compliance
- The company lists SOC 2, SOC 3, GDPR, PCI DSS and NIST Risk Management Framework alignment. · copyleaks.com, 21 Oct 2026
- Documentation depth
- The documentation includes quickstarts, endpoint examples, data models, scan results and webhook payload references. · docs.copyleaks.com, 21 Oct 2026
- Education integrations
- Its education LMS integrations include Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai. · copyleaks.com, 4 Oct 2026
- Evasion detection
- The API documentation says detection can identify character substitutions, text spinners, hidden characters and heavily edited AI text. · docs.copyleaks.com, 21 Oct 2026
- Free API sandbox
- API sandbox mode returns simulated results without consuming credits. · docs.copyleaks.com, 21 Oct 2026
- Free scanning limit
- The web detector lets users scan up to 25,000 characters without logging in, and new users receive limited free credits. · copyleaks.com, 4 Oct 2026
- Google Docs
- A Google Docs add-on runs AI detection inside documents. · copyleaks.com, 21 Oct 2026
- Headquarters
- New York, NY, United States · copyleaks.com, 28 Sept 2026
- Input limits
- The web detector accepts at least 255 characters and up to 2,000 pages; its browser extension requires 350 to 25,000 characters. · copyleaks.com, 21 Oct 2026
- Language support
- AI detection supports more than 30 languages, while plagiarism detection supports more than 100. · copyleaks.com, 21 Oct 2026
- Launch news
- Copyleaks announced its multilingual enterprise AI Content Detector on January 12, 2023. · copyleaks.com, 21 Oct 2026
- Legal name
- Crunchbase identifies the legal entity as Copyleaks Inc. · crunchbase.com, 21 Oct 2026
- Limit: inconsistent or false results
- Trustpilot complaints repeatedly mention false AI flags, missed AI text and different results for identical documents. · trustpilot.com, 21 Oct 2026
- Limit: pricing and credits
- Capterra reviewers say pricing is high for students and the credit system is confusing initially. · capterra.com, 21 Oct 2026
- LMS integrations
- Official integrations include Canvas, D2L Brightspace, Moodle, Blackboard, Schoology, Edsby and Sakai. · copyleaks.com, 21 Oct 2026
- Mixed authorship
- Reports distinguish human and AI-written passages when the two are blended in one document. · copyleaks.com, 21 Oct 2026
- Model coverage
- The detector names ChatGPT, GPT-5, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr and Jasper among supported models. · copyleaks.com, 21 Oct 2026
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