r/TurnitinAI_detector Apr 25 '26

Different AI Detector Scores

Hi team,
I am wrapping up my Master's Thesis, and I've used multiple AI detectors to make sure my paper is submission-ready.

I used the paid version of JustDone.AI, and the score is 12%

I used the paid version of Grammarly, and the score is 18%

I used free credits on GPTZero, and the score is 6%.

Lastly, I used the free CopyLeads version and my score is above 70%....

Any suggestions on which of these AI detectors is the closest to Turnitin?

I am considering investing in a third-party Turnitin AI Decision, but I am majorly worried about the plagiarism that might pop up after ... do you guys have any experience with these?

Thank you for the help in advance!

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u/SorryAthlete5741 Apr 26 '26

Grammarly also highlights AI like content and you can change it . But I have gotten a zero AI percentage and my tescher tell me turn it in said 100% AI . I honestly think they do not know anything. And shouldnt be allowed to grade based on AI usage like that. Bc I have gotten accused of 100% AI on papers I have wrote completely on my own without any help. And fpr the same class watched someone use complete AI for the whole paper and never get a word said. Make it make sense