GPTZero detects AI-written text with per-sentence highlighting, built for educators and content teams.
GPTZero was one of the first AI text detectors and remains widely used in education. Paste or upload text and it reports the likelihood of AI authorship with sentence-level highlighting and perplexity-based analysis. Educators get a teacher-oriented dashboard, plagiarism cross-referencing, and writing process signals that show how a document was composed. The team publishes ongoing research on detection reliability.
GPTZero’s educator tools go beyond scoring: writing-process analysis shows how a document evolved, and dashboards let teachers review class-level patterns. Its team publishes research on detector limitations, which keeps expectations calibrated.
The product’s caution about over-reliance is worth noting: the team emphasizes that detection informs judgment rather than proving misconduct. Educators combine scores with process evidence and conversation, which is where fair academic integrity decisions actually come from.
GPTZero offers a free tier for individual checks. Paid plans add higher limits, deep scanning, and education team features.
Teachers, professors, and editors who need a quick read on whether text was AI-generated.
Yes, with scanning limits; educators and power users subscribe to paid plans.
Yes, GPTZero provides an API used by edtech and content platforms.
Copyleaks bundles plagiarism and detection; GPTZero focuses specifically on AI detection with educator-friendly detail.
Accuracy is high on clear cases but no detector is perfect; results should inform judgment, not replace it.
Yes, uploads support full documents with sentence-level highlighting of suspected AI text.
English leads in accuracy, with additional language support expanding over time.
Yes, pasted text of any length can be scanned quickly.
Yes, content teams use it to verify the provenance of marketing copy.
Results should inform conversations with students, not serve as sole proof.
Educators and content reviewers who need a quick, detailed read on whether text was likely written by AI.
Most scans return results within seconds, whether you paste a paragraph or upload a full document.