AI Detector analyzes text for patterns statistically associated with AI generation and returns a likelihood score with the specific passages flagged — for reviewing submitted work or content before publishing.
Works best on texts longer than about 200 words.
Paste it in, or upload a PDF or Word file — up to 10,000 words per scan.
Results appear in seconds, with an overall likelihood and sentence-by-sentence highlights.
Look at which passages are flagged and why, and talk to the writer before drawing conclusions.
A high score means the text shares patterns common in AI writing. It is not evidence on its own.
Under about 200 words there isn't enough text to judge well. Treat results on short passages with caution.
Formulaic writing — legal templates, technical docs, or writing by non-native speakers — can score high.
Use flagged passages to start a conversation: ask for drafts, notes or sources before drawing conclusions.
Teachers use flagged passages as a starting point for a conversation with the student — not as proof on their own.
Editors check freelance article submissions to ensure original human writing, not AI-assisted output.
Recruiters scan candidate cover letters to identify generic AI-generated text vs personalized human writing.
No — it's a probability estimate based on statistical patterns, not definitive proof; use it as one signal among others.
The AI detector achieves 95-98% accuracy on benchmark datasets, with sentence-level resolution. Very short texts (<200 words) have lower accuracy due to limited sample size.
Yes. The detector identifies text from major LLMs including ChatGPT (3.5/4/4o), Claude (Sonnet/Opus), Gemini, Llama, and Mistral models.
Yes. The AI detector supports 50+ languages with consistent accuracy across major languages.
The detector analyzes statistical patterns (vocabulary entropy, sentence-length variance, perplexity, transition usage) that differ between AI and human writing.
False positives occur ~2-5% of the time, especially on formulaic writing (legal templates, technical docs). Always review flagged content manually before acting.
No. Text is analyzed in-memory and auto-deleted within 24 hours. We never train models on user data.
3 scans per day on guest and free accounts. Pro gets 50/day, Business unlimited. No credit card for any tier.
