Copyleaks AI Detector
Copyleaks AI Detector identifies AI-written text, including text blended with human writing.
What Copyleaks AI Detector is
Copyleaks AI Detector identifies AI-written text, including text blended with human writing. It supports detection in over 30 languages and names content from GPT-5, GPT-4, ChatGPT, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr and Jasper. Its AI Logic feature explains why text was flagged, shows AI phrase frequency and can identify text appearing in content published elsewhere. The web detector allows scans of up to 25,000 characters without login; the website platform requires at least 255 characters and permits up to 2,000 pages. A Chrome and Edge extension accepts 350 to 25,000 characters, and a Google Docs add-on and education LMS integrations support other workflows. Copyleaks also offers a white-labeled API. The web detector has limited free credits for new users. 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. The company says data is encrypted at rest with AES-256 and reports SOC 2 and SOC 3 certifications and GDPR support.
Good
- Supports over 30 detection languages.
- AI Logic explains flags and AI phrase frequency.
- Web scans allow up to 25,000 characters without login.
- Offers a browser extension and Google Docs add-on.
- Provides a white-labeled API.
Watch out
- Website scans require at least 255 characters.
- Browser extension scans require 350 characters minimum.
- New users receive limited free credits.
- Personal and Pro monthly plans have credit limits.
Who it suits
Copyleaks suits students, writers, professionals and creators checking text, as well as educational institutions and enterprise teams managing detection across workflows.
Verdict
Copyleaks offers multiple ways to check text, with explanations for flags and integrations for documents, education systems and custom workflows. Review the character and credit limits, and match the plan to your scanning volume.
Plans and prices
From Copyleaks AI Detector's own pricing page, checked 21 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Personal | $16.99 a month | AI detection 30+ languages · plagiarism 100+ languages · 100 credits · 25,000 words or 100 images · browser extension · Google Docs |
| Personal (monthly billing) | $16.99 a month | 100 unified credits: up to 25,000 words or 100 images · AI detection in 30+ languages · Browser extension · Google Docs add-on · Monthly subscription |
| Pro (monthly billing) | $99.99 a month | 1,000 unified credits: up to 250,000 words or 1,000 images · 25 user seats · Advanced detection filters · Website scans · Analytics dashboard · Monthly subscription |
| Pro | $99.99 a month | Everything in Personal · 25 seats · advanced filters · website sitemap scanning · cross-language detection · analytics · 1,000 credits · 250,000 words or 1,000 images |
| Personal (annual billing) | $167.88 a year | 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 billed annually |
| Pro (annual billing) | $899.88 a year | 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 billed annually |
| Enterprise | Priced on request | Custom pricing · API access · LMS integration · private or on-premises hosting options |
| Education | Priced on request | Custom pricing · LMS integrations · institution analytics · dedicated customer success · private cloud |
The facts
Each one read from Copyleaks AI Detector's own pages, with the date it was checked.
What it does
- Accuracy claim
- The maker advertises more than 99% AI-detection accuracy and a 0.03% false-positive rate.checked 21 Oct 2026
- AI Logic
- AI Logic explains flagged results with AI phrases, source matches and statistical reasons.checked 21 Oct 2026
- API
- The developer product is a REST API returning section-level human or AI classifications, an overall summary and explanations.checked 21 Oct 2026
- Compliance
- The company lists SOC 2, SOC 3, GDPR, PCI DSS and NIST Risk Management Framework alignment.checked 21 Oct 2026
- Documentation depth
- The documentation includes quickstarts, endpoint examples, data models, scan results and webhook payload references.checked 21 Oct 2026
- Education integrations
- Its education LMS integrations include Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai.checked 4 Oct 2026
- Evasion detection
- The API documentation says detection can identify character substitutions, text spinners, hidden characters and heavily edited AI text.checked 21 Oct 2026
- Google Docs
- A Google Docs add-on runs AI detection inside documents.checked 21 Oct 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.checked 21 Oct 2026
- Language support
- AI detection supports more than 30 languages, while plagiarism detection supports more than 100.checked 21 Oct 2026
- Launch news
- Copyleaks announced its multilingual enterprise AI Content Detector on January 12, 2023.checked 21 Oct 2026
- Legal name
- Crunchbase identifies the legal entity as Copyleaks Inc.checked 21 Oct 2026
- Limit: inconsistent or false results
- Trustpilot complaints repeatedly mention false AI flags, missed AI text and different results for identical documents.checked 21 Oct 2026
- Limit: pricing and credits
- Capterra reviewers say pricing is high for students and the credit system is confusing initially.checked 21 Oct 2026
- LMS integrations
- Official integrations include Canvas, D2L Brightspace, Moodle, Blackboard, Schoology, Edsby and Sakai.checked 21 Oct 2026
- Mixed authorship
- Reports distinguish human and AI-written passages when the two are blended in one document.checked 21 Oct 2026
- Model coverage
- The detector names ChatGPT, GPT-5, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr and Jasper among supported models.checked 21 Oct 2026
Where it runs
- Browser and document integrations
- The detector offers a browser extension for Chrome and Edge and a Google Docs add-on.checked 4 Oct 2026
- Browser extension
- Copyleaks provides a Chrome, Edge and Firefox extension for checking highlighted web content.checked 21 Oct 2026
The company
- Company location
- Copyleaks lists its address as 115 E 23rd St., 7th Fl, New York, NY 10010.checked 4 Oct 2026
- Company profile
- LinkedIn lists Copyleaks as a privately held New York software company founded in 2015 with 51–200 employees.checked 21 Oct 2026
- Headquarters
- New York, NY, United Stateschecked 28 Sep 2026
Money
- Free API sandbox
- API sandbox mode returns simulated results without consuming credits.checked 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.checked 4 Oct 2026
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