AI Content Detector — Free
Paste any text and check it for AI-writing patterns — telltale phrases, sentence rhythm, repetition and more. The analysis runs 100% in your browser; nothing you paste ever leaves your device.
AI probability score — analyzed across 7 stylistic writing signals.
Signal breakdown
Detected AI phrases
How to check text for AI patterns
- Paste the text into the box above — at least 40 words for a meaningful result.
- Click Analyze text to get an AI-likelihood score with a full signal breakdown.
- Review the detected phrases and signals — uniform rhythm, repeated openers and telltale phrases are the strongest tells.
About this free AI content detector
AI writing has fingerprints. Large language models favour certain phrases ("delve", "furthermore", "it's important to note"), write sentences of very similar length, repeat the same openers, lean on formal transitions, overuse em-dashes and recycle a narrow vocabulary. This detector measures seven of those signals and combines them into a single AI probability score — all locally in your browser, so your text stays private. Use it to screen essays, articles, reviews and posts in seconds, free forever.
Frequently asked questions
How accurate is this AI detector?
Our detector analyzes seven stylistic writing signals and is tuned to catch common AI fingerprints. Like every AI detector, it works best as a screening aid — we recommend reviewing the signal breakdown alongside your own judgment.
What patterns does it look for?
Classic AI telltales ("delve", "furthermore", "it's important to note", "game-changer"), unnaturally uniform sentence lengths, repeated sentence starters, heavy formal transitions, em-dash overuse, repetitive vocabulary and hedging formalisms.
Is my text sent to a server?
No. The analysis runs entirely in your browser tab with JavaScript. Nothing you paste ever leaves your device.
Can AI-generated text pass as human?
Yes. Heavily edited AI text, or text from newer models with varied style, can score low. Conversely, formal human writing (academic, legal) can score high. That's why the result is a likelihood estimate, not a verdict.