Free AI Detector — Check If Text Was Written by AI
Paste text to detect whether it was generated by ChatGPT, Claude, Gemini, or another AI. Get a 0–100% score with sentence-level analysis — free, instant, no sign-up.
What does our AI detector check?
AI-generated text has predictable fingerprints. Our detector scores your text across four dimensions — the more of these signals it finds, the higher the AI score.
AI buzzwords
Flags overused LLM vocabulary: leverage, utilize, seamlessly, robust, cutting-edge, delve into, paradigm, holistic, transformative, and 30+ more.
Robotic transitions
"Furthermore," "Moreover," "Notwithstanding," "In conclusion," "That being said" — AI loves these; humans rarely use them in natural writing.
Uniform sentence length
Humans naturally vary sentence length dramatically. AI tends to write consistently medium-length sentences — a strong structural tell.
Passive voice overuse
AI defaults to passive constructions far more than human writers. More than 2–3 passive sentences per paragraph raises the score.
How to use the AI detector in 3 steps
- Paste your text into the input box above. For best results use at least 80 words — longer texts give more accurate scores.
- Click "Detect AI" to receive a score from 0–100% on how likely your text was AI-generated.
- Review the results: read the flagged patterns card to understand why text was flagged, then check the sentence-level highlight to see exactly which sentences scored highest.
How to read your AI score
Text reads naturally with varied structure and minimal AI patterns. Likely written by a human or heavily rewritten.
Some AI patterns detected alongside human signals. May have been AI-drafted and then edited, or partially AI-assisted.
Strong AI fingerprints throughout. Consistent sentence structure, heavy use of AI buzzwords and robotic transitions.
Who uses an AI detector?
Educators & teachers
Check student essays and assignments for AI-generated content. Use sentence-level highlighting to identify the specific sections that were written by AI.
Editors & publishers
Verify that submitted articles and blog posts were written by humans before publishing. Maintain content quality standards across your publication.
SEO professionals
Google's Helpful Content update targets low-quality AI-spun pages. Check content before publishing to ensure it passes both human and algorithmic scrutiny.
Businesses & HR
Screen job applications, cover letters, and written assessments to check if candidates used AI tools — especially for writing-intensive roles.