AI or Not
Freemium
Checks whether an image, audio clip or video was made by AI.
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GPTZero
AI Detection
Freemium
One of the first AI text detectors, widely used by teachers and publishers.
About GPTZero
GPTZero was created by a student to help teachers spot AI-written work and has grown into a popular detector. You paste text or upload a document, and it highlights passages that look machine generated along with an overall score.
It offers classroom tools, a writing report that shows how a document was written over time, and plagiarism checks. Integrations with learning platforms help educators use it at scale.
GPTZero has a free plan and paid tiers. Like all detectors, it can make mistakes, so results are best treated as one signal and not as proof.
Standout features
- AI text detection
- Sentence-level highlights
- Document upload
- Writing history report
- Plagiarism checks
- LMS integrations
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