Free AI Detector

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Drop your text into the box and run a quick check. You’ll get an overall likelihood score, a tidy visual, and on-page highlights sized to match that score. It’s fast, works on phones, and costs nothing.

What this tool actually does

The Free AI Detector estimates the chance that a passage was produced with AI. Paste your content, hit Detect AI, and you’ll get:

  • A clear AI likelihood (%) alongside Human and AI-refined signals

  • A compact stacked bar so you can grasp the result at a glance

  • Inline shading: we color roughly the same share of the text as your AI score (e.g., an 8% score shades ~8% of the characters), which helps you see where risk tends to cluster

No detector is perfect. Treat the number as guidance for review, not a verdict.

Highlights & advantages

  • Proportionate highlighting. A 2% score shades about 2% of the text. If the score is 0% (fully human), nothing is marked.

  • Snappy feedback. The score and chart appear quickly; highlights follow without freezing the page.

  • Made for every screen. Comfortable on mobile, tablet, and desktop.

  • Respectful of privacy. Your text is processed to calculate the result and highlight it—nothing more.

  • Free. No account, no paywall—just run your check.

Quick start

  1. Paste your text (aim for 40+ words so the reading is steadier).

  2. Click Detect AI to run the analysis.

  3. Review the score and the chart to gauge overall likelihood.

  4. Scan the shaded portions—only a share equal to the AI score is highlighted.

  5. Need edits? Use Edit text, adjust your copy, and run it again.

 

 

 

Who will find this useful

  • Editors & content leads. Sort submissions quickly and surface lines that deserve a human rewrite.

  • Instructors & academic staff. Add a first-pass screen for essays and reports.

  • Brands & agencies. Hold tone and standards steady across large batches of content.

  • Journalists & fact-checkers. Mark paragraphs that warrant deeper source checks.

  • SEO teams. Track originality signals alongside your usual audits.

Accuracy & limitations

  • The output is a probability estimate, not a binary true/false.

  • Very short notes, lists, code, or heavily quoted material can reduce reliability.

  • “AI-refined” suggests the text may have been edited or polished with AI rather than fully authored that way. Use editorial judgment.

Privacy notes

  • Your text is sent only to compute the analysis and render the highlights.

FAQ

Is this a definitive AI check?
No. It’s a probabilistic signal to help you prioritize review and support human decisions.

What do the highlights mean?
We shade approximately the same proportion of characters (excluding spaces) as your AI score. A 10% score, for example, shades about 10% of the text.

What is “AI-refined”?
A hint that AI might have been used to edit or polish the draft rather than write it end-to-end. It’s a cue to double-check style and voice.

Does it work in multiple languages?
English performs best. Other languages may work, but accuracy can vary.

What’s the minimum length?
For steadier results we recommend at least 40 words.

Do you store my text?
No—processing is temporary and used only to generate your score and highlights.

Reviewer tips

  • Watch for consistency of style and voice across sections.

  • Verify sources or citations when highlighted parts make claims.

  • Pair this detector with plagiarism checks and human editing.

  • For high-stakes calls (e.g., grading), rely on multiple signals and clear policy.

Try it now

Paste your text and press Detect AI. In seconds you’ll have a clear score, a simple chart, and proportionate highlights—no sign-up, no friction.

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