For work submitted to a school that uses Turnitin, Turnitin is the more useful detector because its report is the one an instructor may actually see. GPTZero is the better choice for a student’s private draft review, but neither tool can prove who wrote a passage.
Turnitin can flag writing you created yourself because its AI report looks for statistical language patterns, not proof of authorship. Learn what the score means, what evidence to save, and how to ask for a fair review.
The best AI detector for teachers is usually the one that fits the school’s existing workflow and treats results as a review signal, not proof. Compare accuracy claims, false-positive safeguards, document coverage, privacy terms, and the time required for human follow-up.
The safest answer is not to try to beat AI detectors. Use AI only within your school’s rules, then rebuild the draft around your own ideas, evidence, voice, and revision process.
Turnitin AI detection estimates whether parts of submitted writing resemble AI-generated text. It is a probabilistic signal, not proof that a student used AI or committed misconduct.