Frequently Asked Questions
How does the AI vs Human comparison tool work?
Paste two text samples into the side-by-side editor. AIGeneratedIt runs both through its full detection ensemble — perplexity scoring, burstiness analysis, RoBERTa classification, and stylometric fingerprinting — and returns an authorship verdict with confidence scores for each sample.
Can it detect mixed content — part AI, part human?
Yes. The per-sentence analysis layer scores each sentence independently, making it ideal for mixed-content documents where a human editor has partially rewritten AI text. The side-by-side view highlights exactly which sentences diverge in authorship style.
What stylometric signals are analyzed?
Key signals include: perplexity (how predictable each word choice is), burstiness (variation in sentence length and complexity), type-token ratio (vocabulary richness), average sentence length, and semantic uniformity. AI writing typically shows low perplexity, low burstiness, and high semantic uniformity.
What is the minimum text length required?
A minimum of 150 characters per sample is required for statistically significant results. For the most accurate side-by-side comparison, submit at least 300 characters in each box.
Is this tool free to use?
Yes. The AI vs Human comparison tool is completely free with no account required. Pro plans unlock higher character limits, batch document comparison, and API access.