GPTZero
gptzero.me
AI content detector used by educators and publishers to flag AI-generated text.
Quick Information
- Category:
- Writing & Chat
- Pricing:
- Freemium
- Platforms:
- Web, API
- Free Plan:
- Yes
- API Available:
- Yes
- Last Verified:
- September 2026
What Is GPTZero?
GPTZero detects AI-generated text with a standing free tier offering 10,000 words per month (no expiration) — a genuine, ongoing capability rather than a limited-time trial. As of April 2026, paid tiers run Individual around $14.99/month ($9.99/month annual), Professional around $23.99/month, plus separate Classroom and API tiers priced for institutional use.
A meaningful caveat worth heeding directly: GPTZero's pricing structure is described as more important to understand than any single dollar figure, since prices and word caps change frequently, and the official pricing page relies on a dynamic pricing flow — meaning any specific price quoted in an article (including this one) should be verified directly against the live checkout flow before committing, rather than treated as a durable, fixed rate.
It's aimed at educators, writers, and content reviewers wanting to check text for AI generation, with the standing free tier's 10,000 monthly words providing genuine, ongoing utility at no cost before considering a paid tier for higher volume or classroom/institutional needs. See our Writing & Chat tools directory for related AI detection tools like Copyleaks and Originality.ai.
What Can You Use GPTZero For?
AI-generated text detection
Detects whether text was likely generated by AI.
Academic integrity checking
Checks student submissions for AI-generated content via Classroom tiers.
API-based detection integration
Integrates AI detection into custom applications via API access.
GPTZero Features
- AI text detection — Analyzes text to determine the likelihood it was AI-generated.
- Standing free tier — Provides 10,000 words per month at no cost, with no expiration.
- Classroom tier — Provides institutional pricing for academic integrity checking.
- API access — Offers programmatic detection integration for developers.
Who Is GPTZero For?
- Educators — Checks student submissions for AI-generated content using the Classroom tier.
- Writers and reviewers — Uses the standing free tier for ongoing, moderate-volume AI detection needs.
GPTZero Pros & Limitations
What We Like
- Genuinely standing free tier (10,000 words/month, no expiration), not a limited-time trial
- Dedicated Classroom and API tiers address specific institutional and developer needs
- Regularly updated pricing structure suggests active ongoing product development
Limitations
- Pricing and word caps change frequently, requiring direct verification rather than trusting a static quoted figure
- Like all AI detectors, accuracy isn’t perfect and results should be treated as one signal, not definitive proof
- Institutional pricing (Classroom, API) requires direct contact rather than transparent self-serve rates
GPTZero Pricing
| Plan | Price | Main Features |
|---|---|---|
| Free | $0 | 10,000 words/month, no expiration |
| Individual | ~$14.99/month ($9.99 annual) | Expanded word allowance |
| Professional | ~$23.99/month | Higher usage limits |
| Classroom/API | Custom | Institutional and developer-focused pricing |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #426
- Overall Score:
- 50.7/100
- Monthly Users:
- 17M+
- Rank Change:
- ▲ 24
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by GPTZero or its company. How Our Rankings Work
Frequently Asked Questions
Does GPTZero’s free tier expire?
No, it’s a standing free tier offering 10,000 words per month with no expiration.
How accurate is GPTZero?
Like all AI detectors, it isn’t perfectly accurate and should be treated as one signal rather than definitive proof.
Should I trust a specific quoted price for GPTZero?
Verify directly against the live pricing page, since prices and word caps change frequently.
Does GPTZero offer institutional pricing?
Yes, dedicated Classroom and API tiers are priced separately for institutional use.
Our Take
GPTZero's standing free tier genuinely provides ongoing utility at no cost, a meaningful difference from competitors offering only limited-time trials.
Given how frequently pricing changes, verify current rates directly against the live checkout flow rather than relying on any single quoted figure, including this one.
GPTZero Alternatives
GPTZero Comparisons
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