Sentence-level analysis
AI detector results are estimates, not proof. Use them together with writing history, source checks, context, and human review.
Free AI content detector
Free AI Detector for AI-Generated Text
Paste your content into an AI content detector to check AI-generated text signals, review an estimated AI score, and inspect sentence-level highlights.
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Text to check
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Potential AI signal
A clearer result
AI Content Detector with Sentence-Level Signals
Check AI-generated text with a readable score, highlighted passages, and context for responsible review.
68%AI probability
01The opening adds context in a more varied, natural rhythm.
02This sentence follows a highly predictable structure and repeats the same transition pattern.
03The closing returns to a specific observation and changes pace.
Sentence highlights
Locate the passages that show the strongest AI-writing or ChatGPT-style signals.
Multilingual checks
Analyze text in English, Chinese, Japanese, and many other languages.
Fast analysis
Receive a readable result in seconds without waiting for a background task.
Privacy-aware
Text is sent only for detection and is not published on this page.
Simple workflow
How to Use the Free AI Detector in 3 Steps
Paste or upload text, run the AI content detector, and review the score with sentence-level signals.
- 01
Paste text or upload a file
Add an essay, article, email, report, or import a TXT, MD, PDF, or DOCX document.
- 02
Analyze writing patterns
The AI-generated text checker evaluates sentence structure, wording, and patterns associated with generated text.
- 03
Review the evidence
Read the probability, overall verdict, and highlighted sentences together before making a judgment.
What the detector reads
What an AI detector checks in writing
AI detection does not depend on one forbidden word. It compares patterns across the passage and estimates how closely the writing resembles AI-generated text.
Predictable phrasing
Repeatedly choosing the most expected continuation can make a passage look unusually uniform.
Repeated structures
Similar sentence openings, transitions, and paragraph shapes can raise the score.
Uniform sentence rhythm
Little variation in sentence length and cadence may resemble generated prose.
Limited word variation
A narrow vocabulary or recurring generic phrases can become a useful signal.
No single pattern proves AI authorship. Formal writing, translation, heavy editing, and the topic itself can create similar signals, so context still matters.
Read scores responsibly
How to interpret the result
Detection scores are estimates. Writing style, editing, translation, and text length can all affect them, so the result should guide review rather than replace it.
Before you interpret the score
- Analyze a complete, coherent passage instead of one isolated sentence.
- Remove long quotations, references, tables, and unrelated boilerplate.
- Keep the original language and context whenever possible.
- Use the score with sentence highlights and your own review.
Mostly human signals
Few AI-associated patterns were detected.
Mixed signals
Some passages may be generated or heavily edited.
Strong AI signals
Many patterns resemble machine-generated writing.
Built for real drafts
Check Essays, Articles, Emails, and Reports
Use the AI-generated text checker across common writing tasks, then review the result alongside the purpose and audience of the text.
Essays and academic writing
Review essays, research drafts, assignments, personal statements, and school reports before submission.
Articles and content work
Scan blogs, newsletters, marketing copy, and editorial drafts for formulaic or overly predictable passages.
Professional documents
Check resumes, cover letters, proposals, business reports, and client deliverables before sharing.
Long-form documents
Analyze longer, coherent passages for a more useful signal than a single short sentence can provide.
Choose the right tool
AI Detector vs AI Humanizer
Detection helps you identify possible AI signals. Humanization helps you revise text that sounds stiff or generic.
AI Detector
Estimates whether text contains patterns associated with AI-generated or machine-assisted writing.
- Returns an AI probability and overall verdict
- Highlights sentences that influenced the score
AI Humanizer
Rewrites AI-assisted drafts to improve rhythm, clarity, and natural expression.
- Creates an editable, more natural draft
- Preserves the source language and core meaning
AI detector vs plagiarism checker
An AI detector looks for generation patterns. A plagiarism checker searches for matches with existing sources. A text can be original but AI-generated, or copied without being AI-generated.
Frequently asked questions
AI Detector FAQ
What the score means, what can affect it, and how to use an AI content detector responsibly.
Is this AI detector free?
Yes. You can paste text and run a free AI detector check online. Usage limits may apply to keep the service stable.
Can it detect ChatGPT text?
The tool can work as a ChatGPT detector by looking for patterns often associated with AI-generated text. It still provides an estimate, not proof.
Are AI detectors 100% accurate?
No. AI detection is probabilistic, and false positives or false negatives can happen. Never use one score as the sole basis for a high-stakes decision.
Can AI detectors prove someone used AI?
No. A high score means the writing contains patterns the detector associates with generated text; it does not establish authorship or intent.
What text length works best?
Longer, coherent passages usually provide more patterns to analyze. Very short, heavily quoted, or heavily edited text is less reliable.
Does it support essays, blogs, emails, and reports?
Yes. You can check essays, blog posts, marketing drafts, emails, reports, applications, and other long-form writing.
Should teachers or employers rely only on AI scores?
No. Use AI detector results together with writing history, source checks, assignment context, revision records, and human review.
What is the difference between AI detection and plagiarism detection?
An AI detector looks for generation patterns. A plagiarism checker searches for copied or closely matched source material. A text can be original but AI-generated, or copied without being AI-generated.
Ready to check your text?
Paste a passage and review its AI probability and sentence-level signals in seconds.
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