Question 1

What is IsItAI?

Accepted Answer

IsItAI is a free online tool that detects AI-generated text using perplexity and burstiness analysis, and humanizes it to sound naturally written by a person using natural language processing.

Question 2

How does AI detection work?

Accepted Answer

Our detector uses natural language processing (NLP) to analyze perplexity (word predictability) and burstiness (sentence length variation). These NLP signals identify patterns typical of AI-generated text from GPT-4, Claude, Gemini and other LLMs.

Question 3

Is IsItAI free to use?

Accepted Answer

Yes! The AI Detector is completely free with unlimited use. The AI Humanizer gives you 2 free uses per day, with unlimited access after creating a free account.

Question 4

Is my data private?

Accepted Answer

Yes. All processing happens locally in your browser using client-side natural language processing. Your text is never stored on our servers or shared with third parties.

Question 5

What AI models can IsItAI detect?

Accepted Answer

IsItAI can detect text generated by all major AI models including GPT-4, GPT-3.5, Claude 3.5, Gemini Pro, Llama, and more using perplexity and burstiness analysis.