Free AI Detector for Essays

Check any essay for AI-generated content. Our free tool analyzes writing patterns across 16 indicators to detect AI signatures. Free for the first 1,500 words - no sign-up, no credit card.

Free to 1,500 WordsNo Sign-Up RequiredNo Credit CardUnlimited Re-ChecksError Rate PublishedInstant Results

Looking for a free AI detector for your essay? Most AI detection tools like GPTZero, Originality.ai and Turnitin charge per scan or require a monthly subscription. This one reads the first 1,500 words of any document free, with no sign-up and no credit card, and checks a full document of up to 30,000 words for €4.99 once rather than every month. Essays are the most commonly checked document type for AI content. Whether you are writing a college essay, a course assignment, or an admissions essay, our free AI detector helps you verify your work before submission. Our tool analyzes your essay across 16 statistical dimensions including sentence structure, vocabulary, and phrase patterns. Even short essays of 500-1,000 words provide enough text for meaningful analysis. Teachers and professors increasingly use AI detection as standard practice, and catching potential issues early saves you from academic integrity concerns later.

Paste Text

0 words

DOCX formatting is preserved

Why Check Your Essay for AI?

Teacher Detection

Most educators now use AI detection tools. Checking your essay first ensures you are not surprised by a false positive or unintentional AI-like patterns.

Admissions Essays

College admissions offices scan application essays for AI content. A flagged admissions essay can result in application rejection.

Course Grades

AI detection flags on course essays can lead to failing grades, academic probation, or disciplinary action depending on your institution.

Writing Development

Understanding AI patterns helps you develop stronger, more distinctive essay writing skills.

How We Detect AI in Essays

  • Sentence Length Uniformity: AI essays have unnaturally consistent sentence lengths. Strong essays show varied rhythm.
  • Vocabulary Diversity: AI reuses words more than human writers. Essays should demonstrate a range of expression.
  • Burstiness: Good essays alternate between simple and complex passages. AI maintains constant complexity.
  • AI-Characteristic Phrases: We detect 60+ phrases AI models disproportionately favor.
  • Transition Word Frequency: AI overuses 'Furthermore,' 'Moreover,' etc. Natural essays use more varied connectors.
  • Paragraph Uniformity: AI paragraphs are suspiciously similar in length. Human essays have natural variation.
  • Passive Voice Usage: AI relies heavily on passive constructions. Strong essays use active voice more frequently.

Tips to Write Better Essays

  1. Start with your own outline and ideas before writing. Your unique perspective is your best defense.
  2. Vary sentence length deliberately - short punchy statements mixed with longer analytical sentences.
  3. Use specific examples and personal experiences that AI cannot generate.
  4. Avoid generic opening sentences. Start with something specific and engaging.
  5. Read your essay aloud. If it sounds robotic or formulaic, revise those sections.
  6. Show your thinking process - explain why you reached certain conclusions.

Frequently Asked Questions

The first 1,500 words are free, with no sign-up, no credit card and no cap on how often you run it. Unlike GPTZero, Originality.ai or Turnitin, checking a full essay is a single €4.99 payment rather than a subscription - and it includes 14 days of unlimited re-checks.
The free tier covers your first 1,500 words, which is enough to check an abstract or a chapter and not enough to check a thesis - that is the paid check, at €4.99 once. We keep the free tier genuinely useful because it is how people find us, and because a student who cannot pay should still be able to see what a detector sees.
Our tool uses similar statistical analysis methods as paid tools. While paid services may offer additional features like plagiarism checking or API access, our core AI detection analysis is comprehensive and effective for individual document checks.
Yes. Most educators now use AI detection tools, and many can also identify AI writing through its characteristic patterns, even without technology.
Our tool works on essays of any length, but essays of 500+ words provide more reliable results. Shorter texts have fewer data points for statistical analysis.
Basic grammar correction rarely triggers AI detection. However, extensive rewriting by Grammarly or similar tools can alter your text's statistical fingerprint.

Related AI Check Tools

AI Detector for EssaysFree AI DetectorAll AI Check Tools

Check your whole thesis

Check the whole document instead of the first 1,500 words, with our measured error rate beside the verdict and a report you can download. One payment of €4.99, no subscription, no account.

See what the full check costs