Direct answer
There is no official "passing" or "failing" score on Turnitin's AI writing detection report. The AI detection report displays a percentage (0–100%) indicating how much of a document was likely AI-generated, but individual institutions and instructors set their own thresholds for what warrants review [1]. Scores below 20% are displayed as an asterisk (*%) rather than a specific number—meaning a "passing" result effectively means scoring low enough that your instructor does not flag it. The cost to check your draft before submission via a legitimate Turnitin checking service like Turnitin0 is as low as $1.75 per check with volume pricing, giving you certainty before you submit [2].
What Turnitin AI Score Is Considered Passing or Safe for Submission?
A common misconception is that Turnitin labels any specific score as "passing" or "failing." In reality, Turnitin's AI writing detection report is designed as an indicator—not a definitive judgment [1]. The report shows an overall percentage between 0% and 100%, representing how much of the document was likely generated by an AI writing tool. Each university and even each instructor determines their own policy for what score triggers a conversation or an academic integrity review [2]. Some departments may flag any score above 40%, while others only investigate when the percentage exceeds 60% or 80%. What this means for students is that there is no universal safe number—you need to know your institution's guidelines. However, because Turnitin itself does not define a binary pass/fail outcome, the safest strategy is to aim for the lowest possible score (well under 20%) before submitting [1]. Checking your draft with a pre-submission Turnitin check gives you a clear picture of where you stand before your instructor ever sees the report [2].
How Does Turnitin's AI Detection Report Display Scores Under 20%?
Turnitin's AI writing report has a specific display rule for low scores that many students misunderstand. Any score below 20% is shown as an asterisk (%) rather than the actual single-digit percentage [3]. For instance, a 3% score and a 12% score will both appear as % in the report. The only explicit low numeric outcome students typically see is 0%—if no AI-generated text is detected, the report shows a clean 0% [3]. This asterisk rule exists because Turnitin's detection model is less statistically confident at very low percentages, so the system aggregates them into a single "below threshold" bucket. For students aiming to understand where they stand, knowing that sub-20% results are collapsed into % is critical: a % result means your score is under 20%, but you cannot tell whether it is 2% or 18% from the asterisk alone [3]. The report also highlights specific sentences flagged as AI-generated, which can be just as important as the overall percentage when instructors evaluate a submission [3].
Where Can I Check My Turnitin AI Detection Score and Similarity Report Before Submitting?
Because the standard institutional submission workflow typically does not allow students to see their AI indicator score before the instructor releases it, proactive students turn to pre-submission checking services [2]. Running a Turnitin check before submitting gives you full visibility into both the AI writing percentage and the similarity/plagiarism report—exactly what your instructor will see [4]. This is especially important given that universities increasingly treat AI writing detection as part of their academic integrity process. The Turnitin0 platform provides real Turnitin reports—matching what professors see in their institutional systems—so you can know your score, review flagged sections, and decide whether to revise before submitting to your LMS [4]. Pay-per-use pricing means you only pay when you check: as low as $1.75 per check with multi-check packages, with no subscription required [2]. Most reports are delivered within 5–10 minutes, giving you quick, actionable feedback before your submission deadline.
Knowing your Turnitin AI score before submitting is the only way to avoid surprises. With Turnitin0, you get a real Turnitin AI writing report and similarity report—identical to what your instructor sees—so you can confirm your score and flagged content before it reaches your university's system.
※ Turnitin0.com - Actual Turnitin AI Report Cover, Score, Flag And Similarity Summary
FAQ
What does *% mean on a Turnitin AI report?
The asterisk (%) indicates that the AI detection score is below 20% but above 0%. Turnitin intentionally masks single-digit scores below 20% (e.g., 3% or 12%) as % because the detection model's statistical confidence decreases in that range [3]. Only a true 0% is displayed numerically as 0%.
Can I get in trouble for a *% AI score?
A *% score means the report indicates minimal AI-generated content, but institutional policies vary—some professors may still review flagged sentences even at low percentages [1]. The safest approach is to discuss your institution's specific threshold with your instructor or check your academic integrity policy.
How much does it cost to check my Turnitin AI score before submitting?
Pre-submission Turnitin checks via Turnitin0 start at $1.75 per check when purchasing multi-check packages (e.g., 10 checks for $17.50). Single checks are $2.50 each. All checks are valid for 100 days and there are no subscriptions [2].
Does Turnitin share my paper with other institutions when I check it?
No. Turnitin0 does not archive submitted papers or send them to any third-party database. Your document remains private and is only used to generate your report [2].
What is the lowest AI score I should aim for before submitting?
Since there is no official passing threshold, aiming for *% (under 20%) or ideally 0% is the safest target—especially if your draft was AI-assisted or fully AI-written [1]. Pre-checking with a real Turnitin report is the only way to confirm your exact score bracket.