You finished and submitted your paper in the nick of time, and just as you’re ready to breathe a sign of relief, it hits you: Will my professor run my paper through an AI detector? Maybe you used ChatGPT to brainstorm, or maybe you wrote every word on your own, but you’re still unable to shake the concern. Either way, AI detection is a real part of academic life these days, and it’s worth understanding how it actually works.

What does an AI detector do?

An AI detector doesn’t really read your paper. It runs your text through a statistical model trained on millions of human-written and AI-generated samples, looking for patterns that tend to show up when a Large Language Model (LLM), like ChatGPT or Claude, writes something.

Two of the telltale signs detectors look for are:

Perplexity

Perplexity measures how unexpected your word choices are. People tend to draw from a wider vocabulary, choosing uncommon words and sometimes taking unforeseen turns with their words. AI-generated text tends to be more predictable, as LLMs simply use words that are most statistically likely to follow the words that preceded it. As a result, AI-generated text can feel more than a bit flat.

Burstiness

Burstiness measures the variation in sentence length and structure. People are far more likely to mix things up a little with short, punchy sentences interspersed with longer ones. LLMs often generate a collection of sentences that maintain a very consistent rhythm, and detectors flag that mechanical, almost robotic (pun intended), cadence.

Tools such as the Turnitin AI checker use these signals and others to produce a score estimating how much of a paper appears to be AI-generated.

What’s an AI humanizer?

By this point, you’ve probably seen ads or heard chatter around campus about AI humanizers. These tools profess to rewrite AI-generated text, helping it to slip past AI detectors.

The honest truth is sometimes they work, and sometimes they don’t. AI detectors are updated constantly, and the race between detectors and humanizers is evolving almost daily. More importantly, most Academic Integrity (our favorite type of AI) policies don’t just prohibit detectable AI use; they prohibit unauthorized AI use. So in a nutshell, getting past Turnitin or another detector doesn’t automatically mean you’re in the clear.

Then there’s this very real fact: papers that have been “humanized” often read worse than the original AI draft. You end up with awkward phrasing, subpar word choices, incorrect information, and a voice that doesn’t sound like you at all. And that’s a major red flag for professors who know your writing.

The false positive problem

Just as LLMs can include incorrect information in your paper, AI detectors can also make mistakes.

Students who write clearly, concisely, and in a consistent style and cadence are sometimes flagged as AI even when their work is 100% original. AI detection scores are not definitive, and most experts advise against using the scores as the sole basis for an academic integrity finding.

If you’ve ever been flagged unfairly, you know how stressful this can be. The best protection is to keep drafts, notes, and a clear writing process you can document, like PERRLA’s Version History.

Whenever you use PERRLA to write your paper, whether you’re working in PERRLA Online or in Microsoft Word, PERRLA makes automatic backups of the paper. These automatic backups provide a behind-the-scenes look at how your paper took shape, from when you added references and citations to any time you manually saved changes to the document. When you finish your paper, you’ll also have a timestamped trail of your writing process – ready to share if needed.

What all this means for how you write

The gist of this blog post isn’t “here’s how to beat the AI detector.” It’s that the pressure to shortcut the writing process is understandable. Papers are stressful, and deadlines can be brutal. Shortcuts, though? They create more risk, not less.

Writing your own work, in your own voice, is the only genuinely safe approach. And to be frank, it’s where the actual learning happens.

How PERRLA fits in

First things first: PERRLA is not an AI writing tool. It is entirely human-built and human-tested. We spent a lot of time developing PERRLA’s Reference Engine, checking it, and double-checking it against the APA, MLA, and Turabian publication manuals. PERRLA won’t generate your thesis or write the body of your paper. What it does is take one of the most genuinely frustrating parts of academic writing – the formatting – and handle it correctly so you can focus on the actual content of your paper.

From references and citations to footnotes and heading levels and more, PERRLA builds your paper automatically as you write. This allows you to focus on your argument instead of tracking down whether or not a DOI needs an “https://” in front of it or how to format a hanging indent.

We’re proud to say it’s a legitimate use of technology in academics. It’s not a tool that replaces your thinking, but instead one that helps clear the clutter so you can do it better. PERRLA takes your words and your ideas and makes sure they’re perfectly formatted. And that’s the bottom line.

Reminder:You can try PERRLA absolutely free for seven days (no credit card required) to gain unlimited access to everything PERRLA offers, including the aforementioned version history. Let us handle the formatting, and help you make sure your own ideas shine.