Quenzai

AI Detector

Detect AI-generated text instantly — free

Free · Instant results

0 / 300 characters

PDF, Word (.docx), text. Scanned PDFs hold no text — paste the content instead.

No analysis yet

Paste a text or upload a document, then run the detection.

What is ai detector for?

Find out if a text was written by an AI or a human with our free AI text detector. Useful for educators, editors, publishers, and anyone who needs to verify content authenticity. Fast and easy — no sign-up required.

How to use AI Detector?

AI Detector is a free AI tool available 24/7. No sign-up required. Simply type or paste your request in the box above and get a result in seconds.

Tips and use cases for ai detector

  • Check student submissions for AI use
  • Verify content authenticity
  • Review articles before publishing
  • Detect AI-generated marketing copy
  • Check job applications

FAQ

How accurate is the AI detection?
The AI provides a well-reasoned assessment based on writing patterns, but no detector is 100% accurate. Use it as one signal, not definitive proof.
Can it detect text from ChatGPT, Gemini, or Claude?
The AI analyzes stylistic patterns common to AI-generated text regardless of the source model. Newer models are harder to flag, so treat the verdict as a probability rather than a certainty.
Are AI detectors reliable?
Not fully — independent testing shows every AI detector produces both false positives and false negatives. Writing by non-native English speakers and formulaic genres like lab reports get flagged especially often. No score should be treated as proof on its own.
Can a student be falsely accused because of an AI detector?
It happens, and several universities have scaled back detector use for exactly that reason. Students should keep drafts, notes, and version history as evidence of their process; educators should treat a flag as a reason for a conversation, not a verdict.
How can I spot AI-generated text without a detector?
Look for uniform sentence rhythm, vague claims with no specifics, repeated transitions like 'moreover' and 'in conclusion,' and confident statements without sources. Human writing tends to carry odd details, opinions, and small imperfections.
What should I do if my own writing gets flagged as AI?
Don't panic — false positives are common. Gather evidence of your writing process, such as drafts, edit history, and research notes, and ask for a human review. Formulaic or heavily polished writing trips detectors all the time.

Tools that pair well with AI Detector

Updated on September 22, 2026