AI Content Detector 🎁
🎁 Special Bonus Tool — Paste any text and find out how likely it is to be AI-generated. The detector studies the fingerprints language models leave behind: sentence rhythm, word predictability, stock phrases and more — then scores every sentence. 100% free, runs entirely in your browser.
How to use
The AI Content Detector is a free online tool — no sign-up or download is required.
- Paste the text you want to check (100+ words gives the most reliable result).
- Click Analyze Text. You get one overall AI-likelihood score plus nine signal breakdowns.
- Read the sentence-by-sentence view to see exactly which sentences look machine-written.
- Want to fix flagged text? Run it through our AI Text Humanizer and check it again.
How it works: language models write with a steady, predictable rhythm — similar sentence lengths, safe common words, stock transitions ("Moreover", "Furthermore") and signature phrases ("delve", "it's important to note"). Human writing is messier: bursts of short and long sentences, contractions, surprises. This detector measures that messiness, signal by signal.
Frequently asked questions
What does the AI Content Detector do?
It analyses your text for the statistical fingerprints AI writing leaves behind — uniform sentence rhythm, predictable word choice, stock AI phrases, formal transition openers and punctuation habits — and combines them into a 0–100 AI-likelihood score with a per-sentence breakdown.
How accurate is this AI detector?
It is a heuristic estimator, not proof. No AI detector is 100% accurate — even the best commercial tools flag formal human writing and miss edited AI text. Use the score as a strong signal, and read the per-feature breakdown to judge for yourself. Formal, academic or legal writing naturally scores higher.
Is the AI Content Detector free to use?
Yes. It is completely free, like every tool on SEO Tools by metacalculator.org. There is no sign-up, no word limit and no watermark.
Is my data private when I use this tool?
Yes. The analysis runs entirely in your browser using JavaScript. Your text is never uploaded, stored or shared — close the tab and it is gone.