Was this written by AI?
Paste any text and get an AI-probability score with sentence-level analysis. Works with ChatGPT, Claude, Gemini and more.
Sentence-level highlighting
See exactly which sentences look AI-written, not just one overall number.
30+ languages
The detector auto-detects the language and applies language-specific signals.
Privacy first
Your text is analyzed to compute the score and is not kept afterwards.
AI Paraphrasing Tool
Rewrite sentences with the same meaning in different words. Free online paraphrasing tool for essays, articles and emails.
AI Grammar Checker
Check your text for common spelling and grammar mistakes, with an explanation for every fix. Free online grammar checker.
AI Text Summarizer
Paste a long article, report or transcript and get the key sentences in seconds. Free online text summarizer.
Is the AI detector free?
Yes. Signing in with Google gives you 3 free checks per day.
How accurate is it?
The score is an estimate based on statistical writing patterns. Treat it as a signal, not a verdict — always review important documents yourself.
Which AI models can it detect?
It targets the common style of generative AI, so it applies to ChatGPT, Claude, Gemini, Llama and similar models.