Free AI Detector: Check if Text Is AI-Written

Check whether text was written by ChatGPT or another AI. Get an AI-likelihood score, sentence-by-sentence highlights and writing metrics — free and instant.

About AI Content Detector

Find out how likely it is that a piece of text was written by AI. The detector analyses sentence rhythm, vocabulary, repetition and typical AI phrasing, and highlights the sentences that look machine-written.

How it works

Paste textAt least 50 characters — longer texts give more reliable results.
Get your scoreSee the overall AI-likelihood, a verdict and confidence level.
Review sentencesFlagged sentences are highlighted so you know what to rewrite.

Features

Sentence highlightsSpot exactly which lines read as AI-written.
Writing metricsBurstiness, vocabulary richness, repetition and transition density.
One-click humanizeSend flagged text straight to the AI Humanizer.
Downloadable reportKeep a record of the check for your team or clients.

Frequently asked questions

How accurate is the AI detector?

It’s a strong signal but not proof. Treat the score as a guide: short texts and heavily edited writing are harder to judge for any detector.

Can it detect ChatGPT?

Yes. It looks for patterns common to ChatGPT, Gemini, Claude and other large language models.

Is it free?

Yes, with free checks every day.