GPTZero
Leading AI text detector with sentence-by-sentence perplexity analysis and source scans
pricingfree tierapichecked 22 Aug 2026
What GPTZero is
GPTZero is the industry-leading AI detection platform built to identify text generated by ChatGPT, GPT-4, Claude, and Gemini. It analyzes documents for perplexity and burstiness, highlighting specific sentences with color-coded probabilities of AI authorship. Used by universities, publishers, and HR departments, it includes plagiarism detection, batch file scanning, and a Google Docs writing history report.
Pricing
| Plan | Price | Annual | What you get |
|---|---|---|---|
| Essential | $15/mo | $10/mo | 150,000 words/month, AI detection and sentence analysis |
| Premium | $24/mo | $16/mo | 300,000 words/month, plagiarism scanning, multi-language detection |
| Professional | $35/mo | $23/mo | 500,000 words/month, batch scan, advanced writing statistics, API access |
Industry-standard AI detection software for educators, publishers, and organizations.
Free access: Free plan with 10,000 words scan/month
read from the vendor pricing page · 22 Aug 2026 · how we verify
Best for
- Publishers, editors, and educators verifying original human authorship of submitted articles
- Content managers ensuring freelance writers submit human-crafted content
Not for
- Teams looking for automated video generation or ad bidding automation
Integrations
GPTZero alternatives
All 4 alternatives to GPTZero, compared Get the Toolvern badge for GPTZero
Originality.ai AI-content and plagiarism detection for publishers 
Undetectable AI AI detector and text humanizer for natural tone and readability 
StealthGPT AI humanizer aimed at detector scores 
Phrasly Flat-rate AI humanizer with no word cap Head to head: GPTZero vs Originality.ai GPTZero vs Undetectable AI GPTZero vs StealthGPT GPTZero vs Phrasly
Compiled by Stepan Noianov from the vendor's own site and pricing page. Something wrong? Report an inaccuracy.