Standard checks are returning in phases

Effective immediately, the Standard single-check price is US$11.99 for new purchases. Existing check balances remain usable. Some reports may take longer during phased recovery.

FAQ

Got questions? You'll find all the answers here.

Why might an AI Writing recheck show a different score?

On October 14, 2026, Turnitin updated its English AI writing detection model. Reports generated before the update are not changed retroactively.

If the same document is checked again as a new submission, its AI Writing score may differ under the updated model. A different score alone does not mean the earlier report or the checking service failed. This update concerns the AI Writing Report, not the Similarity Report.

Turnitin's official release note ↗
No. TurnitChecker is an independent service and is not affiliated with or endorsed by Turnitin, LLC. We provide access to AI writing and similarity report-checking services so you can review results before your institutional submission.
Similarity checking supports documents in multiple languages. AI Writing Reports are available for qualifying content in English, Spanish, Japanese, Modern Standard Arabic, German, Dutch, and Turkish. Meeting the language requirement does not guarantee a report; whether one is generated and returned depends on Turnitin's processing result for the submission.
TurnitChecker is designed for private pre-submission checks. Your document is processed only as needed to provide the requested report or service and is not retained for routine long-term storage on our platform. Files and related processing data may be kept temporarily where reasonably necessary for service delivery, security, troubleshooting, fraud prevention, or dispute handling. Submissions are configured not to be added to Turnitin's student paper repository during processing.
Turnitin displays AI Writing results as follows: 0% may be shown as 0%; scores from 1% to 19% are displayed as *% without an exact percentage; scores of 20% or higher are displayed as an exact value. This display rule reflects the higher risk of false positives at lower scores. *% is not an automatic pass or failure and should be interpreted according to your institution's policies.
An AI Writing Report may fail to generate if the document is outside TurnitChecker's 400–28,000 word upload range, uses an unsupported language, contains too little qualifying prose, or Turnitin cannot process it. Meeting the listed requirements does not guarantee a report; generation and delivery depend on Turnitin's processing result. Review the requirements and try again, or contact support if the issue continues.
Turnitin's AI Writing Report needs enough qualifying continuous prose made of complete sentences. Text stored mainly in images, short fragments, bullet points, slide layouts, or complex tables may not provide enough qualifying prose for Turnitin to analyze, so it may not return an AI percentage or AI Writing Report. Exporting slides as a PDF does not change this. Use a PDF, DOC, or DOCX with selectable paragraph text that also meets the current word and language requirements.
AI detection can produce false positives and should not be treated as definitive proof of AI use. Review the relevant text in context and follow your institution's guidance.
Scores may differ because detection tools use different models, training data, thresholds, and methods for analyzing text. Results from separate tools should not be expected to match exactly.
Results are typically delivered within 30 minutes. During peak hours, processing may take slightly longer, but we always aim to deliver within the hour.