AI-written patterns
Estimates the portion that resembles model-generated writing.
Check text for AI-writing signals
Paste between 255 and 20,000 characters. The report estimates AI-generated and AI-assisted patterns, but it cannot prove authorship or determine whether a person used a specific tool.
Specialist checks Data handling explained Uncertainty shown
Check this source What this detector reviews
AI-assisted patterns
Separates likely assistance from fully generated text when available.
Human-writing signal
Returns the model's human probability as a comparison, not a verdict on a person.
Reading the result
Use the score as a signal, not proof
Scores describe statistical writing patterns. They should never be the sole basis for punishment, grading, employment or fraud accusations; drafts, citations and process evidence are more informative.
Important limitation: Short, formulaic, translated, heavily edited and non-native writing can produce misleading scores. Models and human writing styles also change over time.
Read the full methodologyWhen this check can help
Editorial review
Identify passages that deserve a closer source check.
Content moderation
Use one signal in a documented review process.
Personal curiosity
Explore how different writing styles affect detector results.