Direct answer
The Turnitin submission check process is a multi-step workflow that students encounter when submitting academic papers through their institution's learning management system (LMS) or Turnitin's own submission portal. When you submit a paper, Turnitin processes it through two parallel detection engines: a similarity/plagiarism check that compares your text against an extensive database of academic sources, web content, and previously submitted papers, and an AI writing detection module that analyzes whether portions of your submission may have been generated by artificial intelligence tools [1]. Understanding this complete workflow helps you know what to expect at each stage and how to interpret the reports that follow your submission.
Introduction
The Turnitin submission check process is a multi-step workflow that students encounter when submitting academic papers through their institution's learning management system (LMS) or Turnitin's own submission portal. When you submit a paper, Turnitin processes it through two parallel detection engines: a similarity/plagiarism check that compares your text against an extensive database of academic sources, web content, and previously submitted papers, and an AI writing detection module that analyzes whether portions of your submission may have been generated by artificial intelligence tools [1]. Understanding this complete workflow helps you know what to expect at each stage and how to interpret the reports that follow your submission.
What Happens When You Submit a Paper to Turnitin?
When you upload a paper to Turnitin—whether through Canvas, Moodle, Blackboard, or directly using a class ID and enrollment key provided by your instructor—the system begins by confirming that your file meets the accepted format requirements, which include.docx,.pdf,.txt, and.rtf among others [1]. Once uploaded successfully, your paper enters a processing queue alongside other submissions, and most reports are generated within a few minutes, though high-traffic periods near assignment deadlines may extend processing slightly.
The system runs your submission through two checks simultaneously. The originality check (similarity report) scans for text matches against Turnitin's database of 99+ billion web pages, 1.9+ billion student papers, and hundreds of thousands of academic journals and publications. Simultaneously, the AI writing detection module evaluates sentence-level patterns to identify potential AI-generated content, examining factors such as sentence structure consistency and vocabulary predictability [2]. After processing completes, both reports become available in the instructor's Turnitin assignment inbox, where they can review highlighted matches and the overall detection percentages. The similarity report color-codes matched sources, while the AI report provides a percentage indicating how much of the text may have been AI-generated.
How Does Turnitin Detect AI Writing and Plagiarism in Submitted Papers?
Turnitin's AI writing detection analyzes submitted text by examining linguistic patterns that often distinguish AI-generated prose from human writing, including sentence structure uniformity, vocabulary predictability, and stylistic consistency [2]. The system evaluates text at the sentence and paragraph level, flagging segments that exhibit characteristics typical of large language models such as ChatGPT, Claude, and Gemini. An overall AI detection percentage is then calculated for the entire submission. It is important to note that for AI detection scores below 20%, Turnitin displays the result as *% rather than an exact low number—meaning students will only see a precise numeric score of 0% when no AI-generated content is detected at all [2].
On the plagiarism detection side, the similarity report performs a fundamentally different type of analysis. Rather than evaluating writing style, it compares the text against existing published and submitted works using a string-matching algorithm. Matched text is highlighted and color-coded by source type—blue for web sources, green for student papers, yellow for publications—and an overall similarity percentage is calculated [3]. The report includes a detailed match breakdown, allowing instructors to see which sources contributed most to the similarity score and whether matches are properly cited or potentially problematic.
Can You See Your Turnitin AI and Similarity Scores Before Your Instructor Does?
By default, Turnitin's AI writing detection and similarity reports are designed for instructor use, and student access to these reports depends entirely on the assignment settings configured by the instructor [3]. Many instructors choose to enable similarity report viewing immediately after submission, while others release reports after the due date or keep them private for post-grading discussions. The AI writing detection report, in particular, is typically withheld from student view to encourage academic discussions about writing integrity rather than score-focused behavior [4].
However, students who want visibility into their scores before the official submission deadline have options. Some institutions enable a "preview" period where students can submit drafts and review similarity results. Additionally, third-party pre-check services allow students to upload their drafts and receive Turnitin-compatible similarity and AI reports independently, before ever submitting to the class assignment [4]. This proactive approach gives students the opportunity to review their draft's standing—checking for unintentional plagiarism, proper citation practices, and AI detection flags—and make necessary revisions before the instructor ever sees the submission, putting the student in greater control of their academic work.
For students who want full visibility into their draft's standing before the official submission deadline, Turnitin0 offers a pre-check service that delivers real Turnitin similarity and AI detection reports within minutes. Knowing your scores ahead of time puts you in control and allows you to make informed revisions before your instructor ever sees your work.
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FAQ
1. How long does it take for a Turnitin report to generate after submission?
Most Turnitin similarity and AI reports are generated within minutes of submission. During peak periods—such as the final weeks of an academic term—processing may take longer, but instructors typically have access to results within 10 to 30 minutes in nearly all cases.
2. Can I submit the same paper more than once to Turnitin?
Yes, most instructors enable re-submissions until the assignment due date. Each submission generates a new report, and the instructor typically sees only the latest version. However, some assignments restrict the number of allowed submissions or disable re-submissions entirely after the first upload.
3. Does Turnitin detect AI writing from ChatGPT and other tools?
Yes, Turnitin's AI writing detection module is designed to identify text generated by large language models including ChatGPT, Claude, Gemini, and others. The detector evaluates sentence structures, stylistic patterns, and vocabulary predictability to flag potential AI-generated content [2].
4. What does a *% AI detection score mean on Turnitin?
A *% score means the AI detection result falls below 20% but is not zero. Turnitin displays scores under 20% as an asterisk rather than an exact low number like 3% or 12%. Only a 0% score is shown numerically, confirming that no AI-generated text was detected in the submission [2].
5. Can I check my Turnitin AI and similarity scores before submitting to my instructor?
If your institution has not enabled student-facing reports, you will not be able to view your scores within Turnitin itself. However, you can use third-party pre-check services such as Turnitin0 to upload your draft and receive real Turnitin similarity and AI reports before the official submission [4].