Free AI Detector
Free AI Detector — Detect if text was written by AI or human. Free, no signup required.
Detect if text was written by ChatGPT, GPT-4, Gemini, Claude, or other AI tools. Get sentence-by-sentence analysis with AI probability scores. Perfect for students, teachers, and content creators verifying authenticity.
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Frequently Asked Questions
How does this free AI detector work?
Our detector analyzes text patterns to identify AI-generated content from ChatGPT, GPT-4, Gemini, and other LLMs, providing sentence-level probability scores.
Is this AI detector really free?
Yes, completely free with no signup required. You get 5 free AI detection checks per day.
Can it detect ChatGPT and GPT-4?
Yes, our detector identifies content from ChatGPT (GPT-3.5, GPT-4, GPT-5), Gemini, Claude, and other major AI writing tools.
How accurate is this free AI detector?
While no detector is 100% accurate, ours provides sentence-level analysis with probability scores to help you make informed decisions about text authenticity.