Direct answer
Turnitin's AI essay checker is the AI writing detection feature built into the Turnitin grading workflow, and it runs as a separate report alongside the Similarity Report for every submitted essay [1]. It estimates the percentage of a paper's prose that may have been generated by an AI writing tool, then flags the specific sentences it considers machine-written so instructors and students can review them [1]. For a student, the practical question is simple: will my draft be flagged, and can I check it before my instructor does? This guide explains how the checker works, who gets access to it, and how you can run a Turnitin AI check on your essay before submission.
How Does Turnitin's AI Essay Checker Detect AI Writing?
The AI essay checker is not a separate website you can open and type into; it is integrated into the same assignment workflow that produces the Similarity Report, and it is available wherever AI writing detection has been enabled for the course [2]. When an essay is submitted, Turnitin analyzes the document's prose and generates two distinct outputs: the similarity percentage for matched text and an AI writing percentage that estimates how much of the paper may have been written by an AI tool [2].
The detector focuses on long-form writing. Turnitin's AI writing detection is designed to evaluate paragraphs of formal prose in English, and it requires roughly 150 words of continuous writing before it can produce a reliable score; very short documents or heavily edited, non-prose text may not be scored at all [2]. The report marks the result at both the document level and the sentence level, highlighting the individual sentences the model believes are most likely to be AI-generated [2].
Scores are reported in bands rather than precise decimals. The AI writing report shows 0%, the 1-20% range as an asterisk (%), or the higher bands 21-40%, 41-60%, 61-80%, and 81-100% [2]. A result below 20% is displayed as *% rather than a single-digit number, and the only explicit low numeric outcome is 0% [2]. Turnitin emphasizes that the report is an estimate, not an accusation, and that instructors should use their professional judgment before deciding on any action [2].
Can Students Run Turnitin's AI Essay Checker on Their Own Drafts?
Whether students can see the AI writing report depends entirely on settings chosen by the instructor and the institution, not on the student [3]. The AI writing report appears in the same feedback areas as the Similarity Report, so a student can view it only if their instructor has enabled AI writing detection for the assignment and has turned on student visibility for the report [3].
Turnitin gives instructors a "student transparency" option that controls when, or whether, students can see the AI report — before the due date, after the due date, or never [3]. When transparency is enabled, students can review their AI percentage and the flagged sentences while they still have time to revise; when it is disabled, the report remains instructor-only and the student sees nothing until feedback is released [3].
The important limitation is that students cannot submit personal drafts to Turnitin's official checker outside a course. Official AI writing checks run through the assignment inbox of a class, which means a student who wants a private pre-submission check has to use an alternative route [3].
How Do You Get a Turnitin AI Check on an Essay Before Submitting?
The safest approach to the AI essay checker is to treat it as a conversation, not a secret. Turnitin's own guidance tells instructors to discuss AI use with students, explain how the report should and should not be used, and give students the chance to review flagged drafts before penalties are applied [4]. If your course offers student transparency, check your AI percentage early and revise the highlighted sentences while you still have time [4].
If your institution does not give you access to the report, you can run your draft through a service that uses the official Turnitin engine to preview your scores before you submit. A private pre-submission check tells you two things: your AI writing percentage and your similarity percentage, so you can fix problems before they reach your instructor's inbox [4].
Before final submission, review what the report shows — the AI score band, the flagged sentences, and the matched sources — and revise accordingly. If a section of your draft is written with AI and flagged, rewrite it in your own words and re-check until the flagged content is gone [4]. Checking early beats defending later, because once a paper is submitted, the report becomes part of your instructor's record [4].
When you need a real Turnitin AI check before your professor sees the report, turnitin0 gives you the exact same AI writing report and similarity report that instructors see in their institutional systems. Upload your draft, review the AI percentage and flagged sentences, and go into submission with confidence instead of uncertainty.
※ Turnitin0.com - Actual Turnitin AI Report Cover, Score, Flag And Similarity Summary
FAQ
Is the Turnitin AI essay checker the same as the plagiarism checker?
No. The AI writing report estimates how much of an essay may be AI-generated, while the Similarity Report matches text against databases of published and student work [1]. Both reports appear in the same submission workflow, and both should be reviewed together [1].
What scores does the AI writing report show?
The report shows 0%, the asterisk band for any result under 20%, and the higher bands 21-40%, 41-60%, 61-80%, and 81-100% [2]. A score of *% is not the same as 0% — it simply means the estimate is below 20% [2].
Can I see my AI score before my instructor does?
Only if your instructor has enabled student transparency for the AI writing report [3]. If the setting is off, the report stays instructor-only until feedback is released [3].
How long does a Turnitin AI check take?
In institutional systems, the AI writing report typically appears alongside the similarity report shortly after submission [4]. On turnitin0, most users receive their reports within 5-10 minutes [4].
What should I do if my essay gets flagged?
Don't ignore it — review the flagged sentences, rewrite them in your own words, and re-check your draft before submitting [4]. If the flag appears after submission, talk to your instructor directly and share your writing process [4].