How to Detect AI-Generated Text with GPTZero
Learn how to use GPTZero to detect AI-written content, read overall and sentence-level scores, and verify originality in submissions and publishing.
GPTZero is an AI text detection service that analyzes writing and estimates how likely it was generated by a large language model. Originally built to help educators identify AI-written submissions, it has grown into a widely used verification tool for publishers, recruiters, and anyone who needs to confirm authorship and originality. You paste text and get a readability-style report with an overall AI probability score.
How GPTZero works is by examining patterns such as perplexity and burstiness — the statistical texture of human versus machine writing. Lower perplexity and lower burstiness tend to indicate AI generation. The free tier allows limited scans per request, while paid plans add higher volume, batch analysis, and integration options. It is a useful red-flag helper, though no detector is perfectly accurate, so results are best treated as supporting evidence.
Product Features
AI probability scoring — get an overall likelihood that text is machine-generated.
Sentence-level analysis — highlight the specific spans most likely AI-written.
Multiple model detection — recognizes output from common LLMs and paraphrasing.
Batch scanning — check many documents at once on paid plans.
Free tier available — scan short texts without a subscription.
Integrations and API — embed detection into writing and grading workflows.
Product Highlights
Purpose-built to verify whether content was written by a human.
Detailed, sentence-level output rather than a single vague verdict.
Trusted broadly across education, publishing, and hiring contexts.
Continuously updated to keep pace with new AI writing models.
Use Cases
Educators checking whether student essays were AI-generated.
Publishers and editors verifying the originality of submissions.
Recruiters screening applications and candidate-written samples.
Writers auditing their own drafts for accidental AI-like patterns.
Organizations enforcing AI usage and content policies.
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