GPTZero

A leading AI text detection tool used widely in academia to distinguish human writing from AI generation.

4.5( reviews)

Freemium

What is GPTZero?

GPTZero is a classification model designed to detect AI involvement in written text. Originally built to combat academic dishonesty, it analyzes text for "perplexity" (how random the words are) and "burstiness" (variation in sentence length), which are key indicators differentiating human nuance from machine uniformity.

Related Categories

ai document processing ai autonomous agents ai writers ai tool Other

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GPTZero Pricing

Pricing modelFreemium

Starting price$0 for a free plan, with paid plans starting at $8.33 / month (billed annually)

Free planYes

Free trialNo

Billing—

Detailed Pricing Info

GPTZero offers a free plan with a 10,000 words/month limit. Paid plans include Essential ($14.99/mo or $8.33/mo annually for 150,000 words), Premium ($23.99/mo or $12.99/mo annually for 300,000 words), and Professional ($45.99/mo or $24.99/mo annually for 500,000 words and API access).

Pros & Cons of GPTZero

Pros

Provides API access on the Professional plan for integration into custom workflows, with a privacy benefit of not storing API-submitted documents.
Offers specific integrations for educators with Learning Management Systems like Canvas, Google Classroom, and Moodle on its Classroom plan.
Classifies text at the sentence level, allowing users to identify specific passages flagged as AI-generated within a document.

Cons

Does not support scanning of certain common file formats, specifically spreadsheet (XLS, XLSX) and presentation (PPT, PPTX) files.
Imposes a character limit on individual scans and a monthly word count limit across all plans, which may require users to process long documents in segments.

Frequently Asked Questions

Is GPTZero free to use?

GPTZero is offered with a Freemium pricing structure. You can visit their official site to check available free tiers or trial options.

What primary features does GPTZero offer?

GPTZero specializes in aicontentdetector, helping users streamline workflows and generate automated AI outputs efficiently.

Classification

Main Categories

aicontentdetector

User Reviews & Ratings

4.5( reviews)

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Categoryaicontentdetector

Pricing ModelFreemium

Global Rating4.5 / 5.0

Free Plan AvailableYes

Last Updated8/30/2026

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