Context
Polished human essays can look uniform.
AI essay checker
AI essay checker for careful review
Paste an essay draft. Use the result as a review prompt, not an academic accusation.
Result
Waiting
Run a check to see AI probability, confidence, key reasons, and next steps.
Preview
%
AI probability
AI vs human estimate
Human-like cues
Human-like context
Calibration
Confidence and next steps
Context only. Scores can help you review text, but they do not prove authorship or origin.
AI probability is an estimate to help you review content. It is not proof that someone did or did not use AI.
Reasons
Review rhythm, repetition, and generic phrasing.
Next step
Ask for notes, sources, or revision history.
Questions
Can students be falsely flagged?+
Yes. Any detector can be wrong, especially for polished, translated, templated, or heavily edited writing.
Can this prove AI authorship?+
No. AI Checker Lab returns probability estimates to help you review content. It should not be used as proof or an accusation.
Does AI Checker Lab save my checks?+
Anonymous checks are not saved to an account. Signed-in users can save recent check history with a short preview, scores, and result details so they can review past results.
Why can AI checkers disagree?+
AI detection is uncertain. Different tools weigh style, length, topic, and evidence differently, so context matters.