Copyleaks AI Detector vs iThenticate
Copyleaks AI Detector
copyleaks.comiThenticate
ithenticate.comSide by side
| Figure | Copyleaks AI Detector | iThenticate |
|---|---|---|
| Price from | $13.99/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 12 | 3 |
| Spec score · Plagiarism Checkers | 9.2 (#1) | 7.7 (#17) |
| Spec score · Plagiarism Detection Software | 9.2 (#1) | 7.7 (#19) |
| Spec score · AI Plagiarism Checkers | 9.2 (#1) | 7.7 (#15) |
| API | The developer product is a REST API returning section-level human or AI classifications, an overall summary and explanations. | API access is available only for organizational accounts and requires contacting an iThenticate account sales representative. |
| Headquarters | New York, NY, United States | Oakland, California |
| Purpose | The AI Detector identifies AI-written text, including text blended with human writing. | iThenticate screens high-stakes documents for originality and potential misconduct before publication. |
| Security | Copyleaks states that data is encrypted at rest with AES-256 and that it holds SOC 2 and SOC 3 certifications and supports GDPR compliance. | The service added multi-factor authentication by one-time passcode for iThenticate administrator sign-ins in September 2026. |
Plans
Copyleaks AI Detector
- PersonalPriced on request
- ProPriced on request
- Personal$16.99 a month
- Personal (monthly billing)$16.99 a month
- Pro$99.99 a month
- Pro (monthly billing)$99.99 a month
- Personal (annual billing)$167.88 a year
- Pro (annual billing)$899.88 a year
- EducationPriced on request
- EducationPriced on request
iThenticate
- Single$125, paid once
- Multiple$300, paid once
- OrganizationPriced on request
In their own words
Copyleaks AI Detector
Copyleaks AI Detector identifies AI-written text, including writing that mixes AI and human passages. It supports more than 30 languages and names GPT-5, GPT-4, ChatGPT, Claude, Gemini, DeepSeek, Llama, Bloom, Rytr, and Jasper among the sources it detects. AI Logic explains flagged results, displays AI phrase frequency, and can identify text appearing in published content elsewhere. The web detector scans up to 25,000 characters without login; the website platform requires at least 255 characters and accepts 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 connect it to other workflows. 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. A free plan and free trial are listed. Copyleaks says data is encrypted at rest with AES-256, reports SOC 2 and SOC 3 certifications, and supports GDPR compliance.
iThenticate
iThenticate has no write-up on Specifiction yet; its figures are above.