A signal. Not a verdict.

AI Detector provides an estimate of AI authorship. It can incorrectly flag human writing or miss AI-generated text.

Use context and human judgment

Do not use a detection result alone to accuse someone, grade work, or make employment or disciplinary decisions. Review the writing, its context, and other evidence.

Website and API access

The website checker is free. API requests use a prepaid USD balance at $0.0005 per started 100 words, charged only for successful checks. Credits do not expire. Failed checks release their reservation. Reusing an idempotency key for the same text does not charge again. Technical rate limits protect availability.

Permitted submissions

Submit only text you are authorized to process. Do not bypass usage limits, interfere with the service, or use it to target or harass others.

Availability and limitations

The service is provided without a guarantee of authorship accuracy or continuous availability. Results are best treated as an additional reference in a broader review.