# Why does the same essay score differently on Monday and Friday in the same tool?

Source: https://global100.org/forum/q/why-does-the-same-essay-score-differently-on-monday-and-friday/
Site: Global 100 Forum, category Detector tools compared
Published: 2026-11-14. Updated: 2026-11-14. Replies: 1.

## Question by Aisha R., 2026-11-14

I am an international undergraduate and I always check my essays in a detector before I submit, because I am afraid of being flagged for writing too formally. I use the same free tool every time.

On Monday I pasted my essay and it said mostly human, with one paragraph highlighted. On Friday I pasted the exact same essay, without changing a word, and it highlighted two different paragraphs and the overall result was worse. I did not edit anything in between. I checked this by comparing the text, so I am sure it was identical.

Now I am more worried than before. If the tool does not give the same answer on the same essay, how can I trust any result? And if my instructor checks on a day when it gives the worse result, what happens to me? Is this normal, or did I do something wrong? Please explain simply if you can.

## Reply 1 by Hana Sato, 2026-11-14

This is more common than you would think, and you did nothing wrong. Things I would check, roughly in order of likelihood. The vendor updated or swapped the model between Monday and Friday, which many do without announcement. The tool has more than one mode or version and the page defaulted differently. Pasting versus uploading changed how the text was split up. Or the tool has some randomness or load-balancing across different model versions behind it. I cannot see inside your tool, so this is a list of suspects, not a diagnosis.

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Cite as: Global 100 Forum, "Why does the same essay score differently on Monday and Friday in the same tool?", https://global100.org/forum/q/why-does-the-same-essay-score-differently-on-monday-and-friday/, accessed 2026-11-15.