Review text; do not judge a writer by one score
To check how much of a text is AI-generated: paste it and run. The tool analyzes at the sentence level (length variance, overly predictable phrasing, boilerplate like "demonstrates significant") and returns a probability, a confidence level, and the specific suspicious sentences quoted directly — a signal-based estimate, not a definitive verdict.
Human writing can share patterns with generated text. A detector result is a review signal, not a verdict about a person.
How to use it
Paste text you are allowed to analyze, inspect flagged passages for repetition or generic phrasing, and consult source drafts if the decision matters.
Frequently asked questions
Is the AI detector 100% accurate?
No — and it does not claim to be. The result is a probability estimate based on linguistic signals (sentence variance, boilerplate patterns, absent natural human errors) with an explicit confidence level, not a definitive verdict. Any detector claiming full certainty is not being honest.
Is there a free AI text detector?
No — the AI Text Detector (and the other 13 tools) requires a Plus or Pro subscription: 80 runs/day on Plus or 300/day on Pro. The free plan gives you one custom prompt for life and unlimited library browsing, not tool runs.
What exactly does the detector return?
Five elements: the probability percentage, a confidence level with its reason, the specific suspicious sentences (direct quote + reason), points supporting human authorship if any exist, and a summary that flags the result as non-definitive.
Is the percentage conclusive?
No. Misclassification is possible; do not base an academic or workplace accusation on it alone.
Browse the ready prompt library for similar use cases, check the AI tools usage guide, or compare Plus and Pro plans to raise your daily quota. Related tools: Text humanizer