Pre-check
Paste your draft into the checker above. Note your AI-likeness score and burstiness.
Scribbr checker & guide
Scribbr is where many students check essays before handing them in. Run the same kind of check here, then fix the sentences that sound generated.
Updated 2026-10-31 · Independent guide, not affiliated with Scribbr
Independent heuristic estimate of the signals detectors use (predictability, burstiness, stock AI phrasing, repetitive structure). It is not GPTZero, ZeroGPT or Turnitin, and real scores can differ.
Step by step
Paste your draft into the checker above. Note your AI-likeness score and burstiness.
Hover each red sentence to see the signal it triggers, then rewrite it in your own structure.
A number, a source, an example, an opinion. Scribbr can't see specificity in a generic draft.
Run the checker again. When most sentences are green, it reads as yours.
What is Scribbr?
Scribbr is known for proofreading, citation generators and plagiarism checking for students. Its AI detector has a free version and a premium version that handles longer texts and gives a more detailed breakdown, including AI-generated and AI-refined text.
Because Scribbr targets students, its results are often what people bring to a teacher. Understanding what drives the score helps you revise rather than panic.
Want a second opinion on a rewrite? The MultipleChat humanizer (ranked #1 in our humanizer test) lets you compare rewrites from several AI models side by side, then you pick and edit the version that sounds like you.
Other detectors
Teachers and clients often run more than one detector. Fixing the underlying patterns helps with all of them.
FAQ
It's reasonably reliable on clearly AI-written text but, like all detectors, makes mistakes on formal and second-language writing.
Heavy AI rewriting by grammar tools can show up as AI-refined. Simple spelling and grammar fixes usually don't.
Most schools use Turnitin or Copyleaks for official checks. Scribbr is mostly a student self-check tool.
Keep drafts, version history, notes and sources. That's stronger evidence than any detector score.
Use it the right way
AI detectors are probabilistic and get things wrong, which is why it makes sense to check your text first. But the goal is clear, specific writing that is genuinely yours, not hiding AI use where it's banned.