AI Content Detector

Detect AI Writing With Sentence-Level Accuracy

Paste any text and get an instant 0-100% AI probability score. See exactly which sentences look AI-written with red, yellow, and green highlights.

Detect Text Free → Humanize Flagged Content

Free plan: 10 detections/day · No credit card required

Know Exactly Where the Risk Is

A single score hides the real story. Per-sentence analysis reveals it.

0-100% Probability Score

A clear overall AI probability for the whole text, updated on every scan.

Sentence Color Highlighting

Red, yellow, and green marks show which sentences a detector would flag.

Verify After Humanizing

Detect, humanize with us, then re-test to confirm your score dropped.

Built for Reviewers, Students & Marketers

For Students

Review your draft before submitting to Turnitin. Learn more →

For Bloggers

Make sure your published content reads naturally. Learn more →

For SEO Teams

Scale AI-assisted content that still ranks. Learn more →

For Marketers

Keep brand copy authentic across channels. Learn more →

Frequently Asked Questions

Can it detect ChatGPT and GPT-4o text?

Yes. Our detector is trained to recognize patterns common across GPT models and other major AI writers, with a per-sentence confidence score.

What do the colors mean?

Green sentences look human-written, yellow are borderline, and red have a high probability of being AI-generated. Fix the red ones first.

How do I make the score drop?

Use our AI text humanizer to rewrite flagged sentences, then run detection again to confirm. Learn more in our GPTZero comparison.

Scan Your Text Now

See every risky sentence and fix it — all in one place.

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