Explainers
How AI Detectors Work
A practical overview of AI writing detectors (GPTZero, Originality.ai, ZeroGPT) and why scores are unstable.
Direct answer
AI detectors score text for patterns associated with machine generation — predictability, burstiness, and stylometric signals. Products such as GPTZero (gptzero.me), Originality.ai, and ZeroGPT (zerogpt.com) publish their own methods and thresholds.
Because models and detectors co-evolve, a “bypass” result from last month may fail next month. Treat any percentage claim as perishable marketing unless you retest.
What this means for buyers
Prefer tools with transparent limits and strong writing quality over tools that only shout undetectable. Our scoring model gives detector marketing less weight than naturalness, pricing value, and free-plan usefulness when public evidence is thin.
FAQ
Accuracy varies by language, length, edit history, and detector version. They should not be the sole basis for high-stakes academic judgments.