Why Does an AI Detector Say My Essay is AI?

Alex Halpin

Alex Halpin

3/26/2026

#AI Detection#Academic Writing#Essays#False Positives
Why Does an AI Detector Say My Essay is AI?

Why does an AI detector think my essay is AI?

You spent hours crafting the perfect transition, balancing logic and using exactly the right words for your essay. Out of curiosity or prudence, you run it through an AI detector. The result: 85% AI-generated.

Essay traps for AI detectors

AI detectors don't understand high-level writing; they understand predictability. Essays can trigger many markers detectors look for in AI.

1. Structured repetition

Strict essay forms or repetitive transitional phrases require a certain structure. This consistency may seem like the "structured repetition" of a LLM following a template.

2. High density of rare words

AI is trained on vast datasets and therefore has a vast vocabulary. Good essayists also use a diverse vocabulary to convey complex ideas, which confounds an AI detector trying to determine "very literate human" vs. "highly sophisticated AI."

3. Low "burstiness"

There may be more natural variation in a well-written essay than in generic online text, but if the rhythm is too consistent, detectors could interpret that as low burstiness.

How do I stop getting flagged?

If you're a student or working writer who got flagged for their own work:

Appeal with drafts

Show your early notes and scribbles. AI never has an "ugly middle."

"Humanize for safety" with RewriteAI

If you really need to submit work for review on a platform with detectors, RewriteAI will help you maintain your human markers for all time. Just don't lose your soul.

Getting flagged isn't a commentary on your skill—it's a commentary on detection abilities. For more context, see Why AI Detectors Fail and How to Avoid AI Detectors.

Humanize Text Right Now

Turn soulless, machine-made texts into writing that sounds like a human actually wrote them! Avoid being detected as using AI.