O
OAI content detection, plagiarism and fact checking for publishers and educators
Free, from $12.95/mo
Copyleaks AI Detector vs GPTZero
Pricing, features, platforms and who each one suits — side by side.
C
Choose Copyleaks AI Detector if…
- you're in its core audience: educators, students
G
Choose GPTZero if…
- you work on Chrome
- you're in its core audience: teachers and educators, students
Side by side
Feature Copyleaks AI Detector GPTZero
Pricing modelFreemiumFreemium
Starting price$13.99/mo—
Free plan
Free trial
API
Open source
Security and compliance—SOC 2 Type II, CCPA, GDPR
Plagiarism checker—
Writing replay—
Docs/LMS integration—
PlatformsWeb, APIWeb, Chrome, API
CategoryAI Detection & HumanizersAI Detection & Humanizers
CompanyCopyleaksGPTZero LLC
Based in—United States
Founded—2023
Part of——
Key features
C
- Detects AI-generated text from ChatGPT, Gemini and others
- Plagiarism detection for text
- AI image detection
- Credit system: one credit covers 250 words or one image
- One-time extra credit purchases
- API access on enterprise plans
- LMS integration for education
G GPTZero
- Detects text from ChatGPT, Claude and Gemini
- Highlights passages likely to be AI-generated
- Writing Replay shows how a document was typed
- Plagiarism checker for unattributed content
- Hallucination detector
- Grammar check and writing feedback
- Google Docs, Google Classroom, Canvas and Zapier integrations
- API with code samples in 17 languages
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Copyleaks AI Detector
FreeFree
Personal$16.99/mo, or $13.99/mo billed annually
Pro$99.99/mo, or $74.99/mo billed annually
Education / EnterpriseCustom
GPTZero
FreeFree
Professional TeamPrice not shown on page
Strengths and limitations
Copyleaks AI Detector
- Free credits for new users
- Covers AI detection, plagiarism and image detection in one plan
- Annual billing lowers Personal to $13.99/mo
- Unused monthly credits are cancelled at the end of each month
- API and LMS access only on custom-priced plans
GPTZero
- Free tier available to get started
- Integrates with Google Docs, Google Classroom, Canvas and Zapier
- Fully supports five languages
- States SOC 2 Type II, FERPA, GDPR and CCPA compliance
- Individual plan prices could not be read from the pricing page
- Team plan requires at least 2 seats and payment by card only
- No native mobile apps mentioned
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy