VerlumoAIWriting assistant that checks grammar, tone, and clarity.
View detailsGPTZero
AI detection tool that identifies machine-written text in documents and web pages.
GPTZero is an AI detection tool that analyses text and estimates whether it was written by a human or generated by AI. It was one of the first widely used detectors, and it is popular with teachers, editors, and publishers who check student work and submissions.
Key Features
- AI detection with sentence-level highlights
- Plagiarism checking
- Bulk document scanning
- Authorship reports
- LMS integrations for educators
- Free plan with monthly scans
Pricing
| Plan | Price | Details |
|---|---|---|
| Pricing | Check official site | See the official site for current plans. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Best for: teachers and editors who need to check whether writing is AI-generated.
Popular with: Teachers, Students, Writers
Popular with: Teachers, Students, Writers
How it works
The tool highlights sentences that look AI-generated, gives an overall probability, and can check documents in bulk. It also offers a plagiarism checker, an authorship report, and integrations with learning management systems for classroom use.
GPTZero offers a free plan with a monthly scan allowance, and paid plans for heavier use. It is a solid, well-known detector, though like all detectors it can produce false positives, so results should be combined with other evidence rather than treated as proof.
Pros and Cons
✓ Pros
- One of the best-known AI detectors
- Free plan available
- Sentence-level detail helps interpretation
✗ Cons
- Free plan scan limits are tight
- False positives are possible
- Results are a signal, not proof
Frequently Asked Questions
Is GPTZero free?
Yes — GPTZero has a free plan. Check official site
What is GPTZero best for?
teachers and editors who need to check whether writing is AI-generated.
What kind of tool is GPTZero?
GPTZero is a Writing Assistants tool on VerlumoAI.
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View detailsLast reviewed: November 2026