AI text detector: check for ChatGPT-style writing
Free AI content detector that checks writing for patterns typical of ChatGPT, Gemini and Claude: uniform sentences, stock phrases and heavy transitions. Runs in your browser, no sign-up.
Input
How to use this tool
- Enter your values or choose a local file. Replace the example data with your own.
- Review options, units and assumptions, then run the tool.
- Check the result before copying or downloading it. Keep an original copy of important files.
Method & assumptions
Free AI content detector that checks writing for patterns typical of ChatGPT, Gemini and Claude: uniform sentences, stock phrases and heavy transitions. Runs in your browser, no sign-up.
score = weighted mean of: sentence-length variation, AI-phrase density, transition openers, paragraph uniformity, contractions, em dashes, lists of threeWorked example
Text to check (at least 50 words): In today's fast-paced world, technology plays a crucial role in shaping how students le… → AI-likeness score: 96 / 100 → Reading: Strong AI-like patterns → Confidence: Low (short text) → Words and sentences: 141 · 9 → Sentence-length variation (burstiness): 0.15 · AI-like → Average sentence length: 15.7 words
Limits & important notes
A statistical estimate of writing patterns, not proof. Works best on English text of 150 words or more. Formal, edited or non-native writing can score high, and lightly rewritten AI text can score low. Never use the result alone to accuse a student or writer.
Content updated:
Frequently asked questions
How does this AI detector work?
It measures writing patterns that language models produce more often than people: very even sentence lengths (low burstiness), stock words and phrases such as “delve” or “it is important to note”, sentences that open with transitions, uniform paragraphs, few contractions and frequent lists of three. Each signal is scored and combined into a 0–100 AI-likeness score.
Is the AI detector accurate?
No AI detector is fully reliable, including paid ones. Pattern-based scores can flag careful human writing and miss AI text that someone has edited. Treat the result as a prompt to look closer, not as evidence.
Is my text uploaded or saved?
No. The analysis runs entirely in your browser. The text you paste is not sent to our server or to any AI service.
Which languages does it support?
It is tuned for English. It also recognizes common AI phrases in French, Spanish, German, Portuguese, Italian, Tagalog, Chinese, Arabic and Punjabi, but results in those languages are less reliable.
Privacy & Free to use
Are my inputs stored?
Your inputs stay in this tab. We do not receive your files, pasted text or calculation values.
Is this tool free?
Yes. No signup or payment is required.
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