AI Text Detector
Analyze the likelihood that text is AI-generated, with signals and reasoning (estimate).
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.
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.
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.