Does my college essay sound like AI?

The same thread appears in r/ApplyingToCollege almost every week. Someone wrote the essay by hand, ran it through a detector "just to be safe", got 83% or 100% AI, and now cannot sleep. The replies are remarkably consistent. This page is what they say, in one place.

The loop people get stuck in

Write the essay. Paste it into a detector for reassurance. Get a number between 20% and 100%. Rewrite the sentences the tool highlighted. Run it again. Get a different number. Repeat until the essay is worse and the writer has lost confidence in a piece they wrote themselves.

Several people in those threads describe exactly this, and the ones who came out the other side say the same thing: the number moved anyway. One writer watched a passage go from 100% human to 100% AI after adding two commas.

What the admissions people in the thread say

• Readers read. A retired counselor described reading essays in volume and said the thing that raises a flag is a voice that does not match the rest of the application, not a detector percentage.
• Several people who work in higher education said their institutions tell staff not to rely on detectors at all.
• The advice that repeats: keep the draft history. Version history in a word processor is the only evidence that has ever settled an academic-integrity conversation.
• The warning that repeats: do not post a full essay in a public thread for review. People steal them.

Why an essay you wrote can still read machine-made

This is the part the threads are honest about, and it is the part we care about. Three routes come up again and again:

• You used AI to cut words. Asking for help getting from 900 to 650 words sounds harmless, but the model rewrites the sentences it shortens, and those rewritten sentences carry its rhythm. A teacher in one thread put it plainly: ask where to cut, then cut it yourself.
• You polished it in passes. Each pass smooths a corner. Ten passes and the essay is clean, even, and sounds like nobody.
• You wrote it in another language first. International applicants describe this constantly: the idea is theirs, the English is translated sentence by sentence, and the small word choices that carry a voice get lost in the transfer. A 2023 Stanford study found detectors flagged more than half of genuine essays by non-native English speakers — the threads are describing the same thing from the inside.

The tells commenters name on sight

When someone explains why an essay felt generated, they rarely cite vocabulary. They cite shape:

• "It wasn't X, it was Y." One commenter listed this first among the patterns they now notice immediately. Once you see it, you see it everywhere.
• The lesson at the end. A reviewer in an essay thread said they would never close with a "taught me that" sentence. If the story works, the reader has already learned it.
• Adjectives standing in for detail. "Quiet weight", "thin as promises" — phrasing that sounds literary and carries no fact.
• Four sentences, one rhythm. Human prose speeds up and slows down. Assembled prose holds a steady beat.
• A story with no friction. Commenters kept asking the same question about a polished draft: where is the part that does not resolve neatly? A pat arc reads like a template because it is one.

What to do instead

1. Stop testing. Running your own work through detectors only produces anxiety and edits you would not otherwise make.
2. Find one human reader who knows you. Not a tool, not a forum. Someone who can say "this does not sound like you".
3. Cut your own words. If the essay is long, cut it by hand. It takes an hour and it keeps the voice.
4. Check the shape, not the vocabulary. Read the draft aloud: if every sentence takes the same breath, that is the problem, not the word choice.
5. Keep every draft. Name them, do not overwrite. It costs nothing and it is the only defense that works.

If you want to see which sentences carry those habits, paste a paragraph into the checker. It will mark them and tell you why each one reads machine-made. It will not tell you whether a machine wrote your essay, because no tool can honestly do that.

More from the same reading: what Reddit says overall · fiction and fan writing · marked by a teacher