Category
AI detection tools estimate whether text was written by a model. They can be useful as one signal when checking freelance or supplier content, but none are fully reliable — never use a detector score alone to accuse someone.
Our top pick: Originality.ai (7.7/10) — checking commissioned web content.
Originality.ai • AI Detection
Originality.ai is one of the more reliable AI detectors for web content, combining AI detection with plagiarism and readability checks.
Best for: Checking commissioned web content
GPTZero • AI Detection
GPTZero is an easy-to-use AI detector with a free tier, sentence-level highlighting and a writing-report feature.
Best for: Occasional checks of supplier or freelance content