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Copyleaks AI Detector
New York, NY, United States
What it is
Copyleaks AI Detector identifies AI-written text, including writing that combines machine-generated and human passages. It supports more than 30 languages and names models and services such as GPT-5, GPT-4, ChatGPT, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr, and Jasper. AI Logic explains why text was flagged, displays AI-phrase frequency, and identifies text appearing in content published elsewhere. The web detector scans up to 25,000 characters without login, while the website platform requires at least 255 characters and allows up to 2,000 pages. Browser access includes Chrome and Edge extensions, plus a Google Docs add-on. Education integrations cover Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai. A white-labeled API can bring detection into another workflow. Copyleaks states that data is encrypted at rest with AES-256, and reports SOC 2 and SOC 3 certifications and GDPR support. Personal costs $13.99 a year billed annually or $16.99 a month; Pro costs $74.99 a year billed annually or $99.99 a month.
For and against
For
- Detects content across more than 30 languages
- AI Logic explains flagged passages
- Web scanning works without login up to 25,000 characters
- Chrome and Edge extensions are available
- Offers API and education LMS integrations
Against
- Website scans require at least 255 characters
- Browser extension accepts 350 to 25,000 characters
- Higher plans have usage credits and seat limits
- Enterprise and Education pricing is custom
The verdict
Copyleaks combines multilingual AI detection with explanations, browser and document integrations, and an API. Its free access and paid credit plans provide different limits for individual and organizational use.
Who it suits
Copyleaks suits students, writers, professionals, creators, educational institutions, and enterprise teams checking text for AI involvement. Its extensions, document tools, LMS integrations, and API support different working environments.
Plans and prices
Personal
AI detection 30+ languages · plagiarism 100+ languages · 100 credits · 25,000 words or 100 images
Read 21 Oct 2026 · copyleaks.com
Pro
Everything in Personal · 25 seats · advanced filters · website sitemap scanning
Read 21 Oct 2026 · copyleaks.com
Personal (monthly billing)
100 unified credits: up to 25,000 words or 100 images · AI detection in 30+ languages · Browser extension · Google Docs add-on
Read 4 Oct 2026 · copyleaks.com
Pro (monthly billing)
1,000 unified credits: up to 250,000 words or 1,000 images · 25 user seats · Advanced detection filters · Website scans
Read 4 Oct 2026 · copyleaks.com
Personal (annual billing)
1,200 unified credits: up to 300,000 words or 1,200 images · AI detection in 30+ languages · Browser extension · Google Docs add-on
Read 4 Oct 2026 · copyleaks.com
Pro (annual billing)
12,000 unified credits: up to 3,000,000 words or 12,000 images · 25 user seats · Advanced detection filters · Website scans
Read 4 Oct 2026 · copyleaks.com
Enterprise
Custom pricing · API access · LMS integration · private or on-premises hosting options
Read 21 Oct 2026 · copyleaks.com
Education
Custom pricing · LMS integrations · institution analytics · dedicated customer success
Read 21 Oct 2026 · copyleaks.com
On the record
- Accuracy claim
- The maker advertises more than 99% AI-detection accuracy and a 0.03% false-positive rate.copyleaks.com · read 21 Oct 2026
- AI Logic
- AI Logic explains flagged results with AI phrases, source matches and statistical reasons.copyleaks.com · read 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 · read 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 · read 4 Oct 2026
- Browser extension
- Copyleaks provides a Chrome, Edge and Firefox extension for checking highlighted web content.copyleaks.com · read 21 Oct 2026
- Company location
- Copyleaks lists its address as 115 E 23rd St., 7th Fl, New York, NY 10010.copyleaks.com · read 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 · read 21 Oct 2026
- Compliance
- The company lists SOC 2, SOC 3, GDPR, PCI DSS and NIST Risk Management Framework alignment.copyleaks.com · read 21 Oct 2026
- Documentation depth
- The documentation includes quickstarts, endpoint examples, data models, scan results and webhook payload references.docs.copyleaks.com · read 21 Oct 2026
- Education integrations
- Its education LMS integrations include Canvas, D2L, Moodle, Blackboard, Schoology, Edsby, and Sakai.copyleaks.com · read 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 · read 21 Oct 2026
- Free API sandbox
- API sandbox mode returns simulated results without consuming credits.docs.copyleaks.com · read 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 · read 4 Oct 2026
- Google Docs
- A Google Docs add-on runs AI detection inside documents.copyleaks.com · read 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.copyleaks.com · read 21 Oct 2026
- Language support
- AI detection supports more than 30 languages, while plagiarism detection supports more than 100.copyleaks.com · read 21 Oct 2026
- Launch news
- Copyleaks announced its multilingual enterprise AI Content Detector on January 12, 2023.copyleaks.com · read 21 Oct 2026
- Legal name
- Crunchbase identifies the legal entity as Copyleaks Inc.crunchbase.com · read 21 Oct 2026
