Best AI detectors (AI-generated text)
AI detectors estimate the probability that a text was written by an AI. Very useful for teachers, recruiters and content editors.
A word of warning: no detector is 100 % reliable and all of them produce false positives. Use one as an indication, never as proof. Here are the most serious ones.
Originality.ai
The AI detector plus plagiarism check built for content teams
GPTZero
The most recognized AI content detector, born in an American university
Copyleaks
Plagiarism and AI detection in 100+ languages, from free to enterprise
Winston AI
High-precision AI detector with PDF report output, for educators and publishers
ZeroGPT
Free, multilingual AI detector, ideal for a quick initial check
Frequently asked questions
What is the best AI detector?
Originality.ai is the benchmark for content professionals. GPTZero is very popular in education. But none of them is infallible: always cross-check against your own judgement.
Are AI detectors reliable?
No, not entirely. They give a probability, not a certainty, and can wrongly flag text written by a human. Never base a decision (a grade, a sanction) on them alone.