Does Turnitin Store Your Paper? What the FAQ Actually Says

When students ask us whether Turnitin stores their paper, the honest answer is: it depends on what you mean by "store." Turnitin does not maintain a separate database dedicated to AI writing detection. However, that does not mean nothing is retained. AI detection results are saved as part of the similarity report, and your institution controls whether your paper itself goes into the similarity repository. The distinction matters, and we will walk through each piece.

The most direct statement on this topic comes from Turnitin's own FAQ. When asked whether submitted papers are added to a repository for AI writing detection, the answer is:

"No, it does not. There is no separate repository for AI writing detection, and customers retain the ability to choose whether to add their student papers into the repository or not."

The FAQ continues: "Our AI writing detection capabilities are part of our existing Similarity Report workflow."

What this tells us is that AI detection does not create a new, standalone database of your writing. The AI analysis runs on top of the similarity workflow that Turnitin already had in place. So when people worry about an "AI database" that collects AI-generated text for future matching, that is not how the system works. The AI detector evaluates text during the similarity check, but it does not file your paper into a separate AI-specific archive.

The same FAQ sentence contains an important clause that often gets overlooked: "customers retain the ability to choose whether to add their student papers into the repository or not." In Turnitin's terminology, "customers" means the institutions (universities, schools, districts) that license the service, not individual students.

This means your school decides whether your submitted paper is added to the similarity repository for future comparisons. Some institutions enable repository submission by default. Others do not. If you want to know whether your paper is being stored in the similarity database, the question to ask is not "does Turnitin store my paper" but rather "what repository settings has my institution chosen."

Turnitin itself does not force papers into the repository. The decision rests with the licensing institution, and settings can vary from one department to another.

Here is where the nuance becomes critical. While there is no separate AI repository, Turnitin does retain the results of the AI analysis. The FAQ states:

"Results regarding the percentage AI writing identified by the detector, along with the segments identified highly likely written by AI – are retained as part of the similarity report."

This means the AI writing detection percentage and the flagged text segments are saved within the similarity report for that submission. They are not stored in a separate AI database, but they are preserved as part of the report record.

The distinction we want to highlight is between "your paper is stored in an AI database" (which does not happen) and "your AI detection results are saved within a report" (which does happen). Both things are true at the same time, and confusing the two leads to misunderstandings about what Turnitin actually retains.

One common source of confusion is whether the AI detection percentage affects the similarity score. Turnitin addresses this directly:

"The Similarity score and the AI writing detection percentage are completely independent and do not influence each other."

The FAQ explains: "The Similarity score indicates the percentage of matching-text found in the submitted document when compared to Turnitin's comprehensive collection of content for similarity checking."

The two scores measure different things. The similarity score compares your text against existing content in the repository. The AI score estimates the likelihood that portions of your text were AI-generated. They run in the same workflow, but they do not feed into each other. A high AI percentage does not raise your similarity score, and a high similarity score does not affect the AI percentage.

Another factor that affects what happens to your paper is which Turnitin product your institution licenses. Not every Turnitin subscription includes AI writing detection. The FAQ states: "AI writing detection is only available to customers that license Turnitin Originality." For iThenticate 2.0 users, the FAQ notes: "iThenticate 2.0 customers can get access to this feature if they license AI writing capabilities as an add-on."

The FAQ adds: "If you are a Turnitin Similarity, Turnitin Feedback Studio (TFS) or Originality Check customer, please speak to your Turnitin account manager regarding access to AI writing detection."

This matters because if your institution has not licensed AI detection, then the AI analysis simply does not run on your submission. The question of whether your paper is stored for AI purposes becomes less relevant when the feature is not active. We mention this because the storage question is often inseparable from the licensing question: which Turnitin product is your school actually paying for?

To summarize what we have covered:

• There is no separate AI writing detection repository.
• Your institution decides whether your paper enters the similarity repository.
• AI detection results (the percentage and flagged segments) are retained as part of the similarity report.
• The AI score and the similarity score are independent and do not influence each other.
• AI detection is only available to institutions that license Turnitin Originality (or purchase it as an add-on for iThenticate 2.0).

The takeaway is that "does Turnitin store my paper" is not a yes-or-no question. The paper itself may or may not be in the similarity repository, depending on your institution's settings. The AI detection results, however, are retained within the similarity report regardless. Understanding this distinction can help you have a more informed conversation with your instructor or institution about what happens to your work after submission.