Grammarly is a writing assistant, but whether your text looks like AI depends on how you use it. Fixing spelling and punctuation rarely changes how a detector sees your writing. Using its generative features to rewrite or draft whole sentences can. This guide explains the difference, what to expect from Turnitin and other detectors, and how to keep your work clearly your own.
Is Grammarly Considered AI?
Grammarly uses machine learning to suggest corrections, so it is an AI-based tool in a broad sense. That is different from being a tool that writes your text. Its basic checks, such as spelling, grammar and punctuation, edit what you already wrote. Its newer generative features can draft, rewrite or expand text, which is closer to what chatbots do. Tool features change over time, so look at the current version you use.
Will Grammarly Make My Writing Show Up as AI?
It can, but it depends. Light corrections usually leave your sentences, ideas and word choices mostly as they were. Accepting many rewrite suggestions can smooth out your style, so that the text becomes more uniform and predictable. Detectors tend to look at exactly that kind of pattern. So the more of the wording you let a tool rewrite, the more likely a detector is to notice.
Does Turnitin Detect Grammarly?
Turnitin’s AI indicator estimates how much of a submission may be AI generated. Whether a specific Grammarly edit affects the result depends on how much the text was changed, and no public rule guarantees either outcome. Because of that, you will find conflicting stories online. Turnitin and many universities say the indicator is a starting point for review, not proof. If your school allows Grammarly, say so in your submission if the policy asks for it, and keep your drafts.
Grammarly, Quillbot and Other Paraphrasers
Paraphrasing tools such as Quillbot rewrite sentences more heavily than a grammar checker does. Some course policies treat rewriting tools as AI assistance. Others do not. The safest approach is to check your course’s policy before using any tool that changes your wording, and to credit the help you used if the policy requires it.
How Accurate Is Grammarly’s AI Detection?
Grammarly also offers features that estimate AI content in some plans. Like every detector, it gives an estimate that can be wrong. We do not have independent accuracy data to quote, so treat its output the way you would treat any other detector’s.
How to Use Grammarly Without Raising Flags
- Use it for corrections, not for drafting. Write first in your own words, then fix mistakes.
- Review every suggestion. Do not accept rewrites that change your meaning or voice.
- Add specifics only you know. Personal examples, local details and your own opinions make a text stand out as yours.
- Keep your history. Version history in your word processor shows your process.
- Follow the policy. If your class or employer limits AI tools, follow the rule even for small edits.
You can check how a passage reads with our free AI detector, and review readability with the word counter. If a clean human draft is flagged anyway, read why AI detectors flag my writing.
Frequently Asked Questions
Can Grammarly show up as AI in a detector?
Yes, especially if you accepted many rewrites. Basic spelling and grammar fixes are less likely to change how your text is read.
Is using Grammarly cheating?
That depends on the rules of your school or workplace. Check the policy for your course and ask your instructor if it is unclear.
Does Turnitin detect Quillbot?
Results vary, and there is no guarantee either way. Heavy paraphrasing may be flagged by a detector or treated as AI assistance under a policy. Check the rules first.
How can I show that I wrote my own work?
Keep drafts, notes and version history, and be ready to discuss your topic.
Last reviewed October 2026.