How to check if your text sounds AI
Whether it's a hiring manager reading your cover letter, an editor reading your pitch, or just your audience reading your newsletter — people now run a mental AI check on everything. The smart move is to run the real check yourself, first. Here's how detection actually works and how to use it as an editing tool.
What AI detectors actually measure
Detectors don't "recognize ChatGPT." They measure statistical properties of the text:
- Perplexity — how predictable each next word is. AI text is highly predictable (that's literally how it's generated); human writing takes odd turns.
- Burstiness — variation in sentence length and structure. Humans are uneven; models are smooth.
- Distribution tells — overuse of certain connectors, hedges and formal vocabulary that models favor.
That's why a human-vs-AI percentage is really a predictability score. Very formulaic human writing (corporate memos, legal boilerplate) can score "AI" — and heavily edited AI text can score human. The score measures how the text reads, not who typed it.
Why two detectors disagree on the same text
Different training data, different thresholds, different sensitivity to length (short texts are hard to score — under ~100 words, treat any result as a guess). This is normal. The practical takeaway: don't chase a perfect score on one specific detector; aim to move the score substantially and read the result aloud. If it sounds like a person, it is doing its job.
How to check your text on iPhone
- Open BypassGPT, paste your draft, tap Analyze.
- Read the score as an editor, not a verdict: 80%+ human — publish; 40–80% — rhythm and connectors need work; under 40% — it reads machine-written to most people too.
- Tap Humanize, pick your tone, and re-check. The before/after delta tells you the rewrite worked — no guessing.
Using the score as an editing loop
The detector is most useful as a feedback loop while you edit: check → fix the biggest tell → re-check. The fixes that move the score fastest are exactly the ones in our rewrite patterns guide — sentence rhythm first, connectors second, concrete details third.