How to prove you didn’t use AI

The short answer

You prove you didn’t use AI by showing how the work was written: the version history of the document, your drafts, notes and sources, and your ability to explain the work in your own words. A detector score is one tool’s estimate. Your process is evidence of what actually happened.

The checklist, in order:

1. Ask to see the report and the passages that were flagged.
2. Gather your process evidence and keep the original files untouched.
3. Reply in writing, calmly, and offer to discuss the work in person.
4. Read your institution’s academic integrity procedure and its appeal route.
5. Do not change the text or the files after the fact.

Ask to see what was flagged

Start by asking what the concern is based on. You cannot respond to a number you have not seen. A short, polite message is enough. Ask for:

• The report itself, or a copy of it, including which tool produced it.
• The specific passages that were flagged. A whole essay and two formal sentences in the conclusion are very different situations.
• Anything else the concern rests on, such as a difference from your earlier work or a source that could not be found.
• The policy or rule you are said to have broken, and what the next step is.

Knowing which passages were flagged lets you bring the right evidence: the notes behind that section, the source you were summarising, the earlier draft of that paragraph. For what a score does and does not mean, see what percentage of AI is acceptable?

Gather your process evidence

Writing leaves a trail. Collect what you have, and do not worry if you do not have everything on this list. Several small pieces that agree with each other are convincing.

Version history in Google Docs and Word

Both keep a record of earlier versions, with two limits worth knowing. Google’s help page on finding what has changed in a file says you need permission to edit a file to browse its earlier versions. So if your instructor needs to see the history, they may need edit access to the original, or you can go through it together on your screen.

Microsoft’s page on viewing previous versions of Office files says version history in Microsoft 365 only works for files stored in OneDrive or SharePoint. A Word file saved only on your computer may not have one, so look for older saved copies and backups instead.

Share the original file, not a new copy. A copy usually starts with a fresh history. Save screenshots of the history as a backup, with the dates visible.

Respond and offer to talk

Reply in writing so there is a record, and keep it short and factual. Say that you wrote the work yourself, list the evidence you can provide, and offer to meet.

• Stick to facts. Describe what you did and when. “I wrote this in Google Docs over four days and can share the version history” is stronger than an argument about whether detectors work.
• Offer to discuss the work in person. Explaining your argument, why you chose a source and what you would change is often the most convincing evidence there is.
• Offer to write under observation. You can offer to rewrite a section, or answer a related question, in person. It shows how you write when nothing else is available.
• Be exact about any tool you did use. A spelling and grammar checker, a translation tool or a citation tool is worth mentioning, so nothing looks hidden later. Whether those are allowed depends on the course. See is using AI plagiarism?
• Stay polite. Your instructor is usually following a procedure. Anger makes the conversation harder and does not add evidence.

Keep copies of everything you send and receive, and note the dates of any meetings and what was said.

Know the procedure and the appeal route

Find your institution’s academic integrity policy and read it before any meeting. It is usually in the student handbook or on the school’s website. Look for:

• The stages. Many institutions start with an informal conversation before anything formal.
• What counts as evidence, and whether the policy says anything about detector scores.
• Your rights in a meeting, such as bringing someone with you or seeing the evidence beforehand.
• Deadlines for responding and for appealing. These can be short.
• Who hears an appeal, and on what grounds you can make one.

Use the support that exists. Many institutions have a student advice service, a students’ union, an ombudsperson or an academic adviser who can explain the procedure and help you prepare. If you are at school, involve a parent or guardian.

It is reasonable to ask, politely, that your drafts and your explanation are considered alongside the score. An AI score is a probability, not proof, and should never be the only basis for an academic integrity decision.

What not to do

• Do not run the text through a “humanizer” or rewriting tool. If you wrote the work, this replaces your own writing with something you did not write, and it can look like an attempt to hide something.
• Do not edit the file or its history. Leave the submitted document exactly as it is. Do not tidy it, rename it, or copy the text into a new file and present that as the original.
• Do not create evidence afterwards. Notes or drafts written after the accusation and presented as earlier work would be a far more serious problem than the original flag.
• Do not rely on another detector’s score as your defence. Different tools give different numbers, and one estimate does not cancel another. Your process is better evidence.
• Do not ignore it. Missing a deadline to respond can limit your options.
• Do not admit to something you did not do just to end the process. Ask for time and for advice instead.

Preventing it next time

You cannot control whether a detector flags your writing. You can make sure you always have a record of how you wrote it.

• Write in a tool that keeps version history, from the first line. Do not draft somewhere else and paste the finished text in at the end.
• Keep your drafts. Save a dated copy at each stage, or leave earlier versions in place.
• Keep your notes, outline and sources until the grade is final. Photograph anything on paper.
• Know the AI policy for each assignment, and if a tool is allowed, say how you used it. See how to cite ChatGPT.
• Check a draft if you want to know what a report looks like. The Plagiarism Checker Plus AI detector gives each sentence a likelihood of being AI-written plus an overall score. If your own writing is flagged, keep your drafts ready. You do not need to rewrite honest work to change a score.

If you write in Google Docs, the Google Docs add-on runs a check inside the document you are already drafting in. The first check per tool is free up to 1,000 words without an account, a free account includes 3,000 words a month, and your text is never used to train AI.

For teachers: a fair process

A student who wrote their own work and is told a tool says otherwise is in a hard position. A fair process protects them and protects your decision.

• Show the student what was flagged. Share the report and the passages, not only a number.
• Treat the score as a reason to look closer. It is a probability, not proof, and it should never be the only basis for an academic integrity decision.
• Ask for process evidence and accept it. Version history, drafts and notes are what a score cannot show. See how teachers check for AI.
• Talk before you conclude. Ask open questions about how the work was written. Our guide on talking to a student about plagiarism covers how to run that conversation.
• Follow the procedure and tell the student what it is, including how to appeal.