AI Content Detector

How AI Content Detection Works

AI detectors analyse text for patterns that distinguish human writing from AI-generated content. While no detector is 100% accurate, they look for several key signals that are characteristic of AI language models like ChatGPT, Claude and Gemini.

Key Signals AI Detectors Look For

• Perplexity: How unpredictable the word choices are. AI text tends to use highly predictable, "safe" word combinations — humans are more erratic and creative.
• Burstiness: Variation in sentence length. Humans naturally mix very short and very long sentences. AI tends to produce sentences of similar length throughout.
• Repetitive phrasing: AI models often overuse certain transitional phrases like "Furthermore," "In conclusion," "It is worth noting that."
• Lack of personal anecdotes: AI rarely includes genuine first-person experiences, specific dates, or emotional vulnerability.
• Overly balanced structure: AI content tends to be well-organised to the point of being formulaic — introduction, three points, conclusion.

Why AI Detection Is Difficult

As AI models improve, they're becoming better at mimicking human writing patterns. Additionally, humans who heavily edit AI text, or who naturally write in a structured way, may see higher AI probability scores even for genuinely human-written content. This is why results should always be treated as a guide rather than a definitive verdict.

AI Detection in Australian Schools and Universities

Australian universities and schools are increasingly using AI detection tools as part of academic integrity checks. Universities including ANU, UNSW, Melbourne, and QUT have updated their academic integrity policies to address AI-generated work. Most institutions use multiple tools and require human review before any action is taken based on AI detection results.

Tips to Make AI Text Less Detectable

• Add personal anecdotes, specific examples and first-person experiences
• Vary sentence length significantly — mix very short sentences with longer ones
• Use unconventional word choices and idioms
• Remove transitional clichés like "Furthermore" and "In conclusion"
• Add imperfections — not every sentence needs to be perfectly structured