What ZeroGPT looks for
ZeroGPT gives your text a single "AI GPT" percentage and highlights the sentences it thinks were machine-written. A draft pasted straight from ChatGPT, Gemini or Claude usually comes back at 90 to 100%.
The highlighted sentences tend to have a few things in common:
- Every sentence is about the same length and built the same way.
- Words are the safest possible choice: "crucial", "significant", "various", "enhance".
- Paragraphs open with "Furthermore", "Moreover" or "In addition" and close with a neat summary.
- There are no names, numbers or specific examples, only general statements.
How to get a human score on ZeroGPT
- Paste your text into The Humanizer above. Remove any leftover markdown first with the free AI text cleaner.
- Keep the default Enhanced mode. It changes sentence structure and rhythm, which is what ZeroGPT reacts to.
- Choose a purpose (Essay, Email, Blog/Article or General) and click Humanize.
- Every result shows its ZeroGPT score next to a second detector, Sapling, so you see right away whether it passed.
- If a few sentences still feel stiff, rewrite those by hand or run the humanizer again on just that paragraph.
In our tests, essays and blog posts that scored 98 to 100% on ZeroGPT usually dropped below 25% after one Enhanced rewrite, and some reached 0%. The score you get always depends on the text, which is why it is shown on every run.
Do not stop at ZeroGPT
ZeroGPT is one of the more lenient detectors. A text that passes it can still be flagged by stricter tools. That is why The Humanizer also scores every rewrite on Sapling, which is far harder on fluent AI writing. If both scores are low, you are in a much better position for Turnitin and GPTZero as well.
Read more in our guides to bypassing Turnitin and bypassing GPTZero, or use the AI detector and humanizer to check and rewrite in one place.
When ZeroGPT flags your own writing
ZeroGPT can flag text you wrote yourself, especially formal essays, technical writing and work by non-native English speakers. Running your own draft through The Humanizer adds natural variation without changing your argument, and you can see the score drop before anyone else checks it.
Free users can humanize 200 words per run, 5 runs a day, with no sign-up. Longer essays fit in the Basic and Pro plans, with 1,000 or 3,000 words per run.