AI Content Detector

What is AI Content Detector?

AI Content Detector is a free browser-based tool that analyzes a piece of text and estimates whether it was written by a human or generated by an artificial intelligence model such as ChatGPT, Gemini, or Claude. Rather than relying on an external API, the detector uses six proven statistical indicators — perplexity, burstiness, vocabulary richness, sentence starter diversity, average sentence length, and transition word density — to score the text on a scale from likely human to highly likely AI. The entire analysis runs in your browser, so your text is never uploaded or stored anywhere.

AI-generated text tends to exhibit measurable patterns: more uniform word distributions, consistent sentence lengths, repetitive sentence starters, and a higher density of formal transition words. Human writing, by contrast, is typically more varied and unpredictable. By measuring these characteristics, the tool produces a weighted overall score along with a detailed breakdown of each indicator, giving you a transparent look at why the text was classified the way it was.

How to Use This Tool

1. Paste or type the text you want to analyze into the input area. A minimum of 50 words is required for meaningful statistical analysis.
2. The tool analyzes your text instantly as you type and displays an overall AI probability score.
3. Review the six individual indicator scores to understand which specific traits of the text lean human or AI.
4. Use the verdict label — Likely Human-Written, Mostly Human, Mixed / Uncertain, Likely AI-Generated, or Highly Likely AI — as a quick summary.
5. Click the clear button to reset the input and analyze a different piece of text.

Tips and Best Practices

• Provide at least 200 words for the most reliable results. Short texts do not contain enough statistical signal for confident classification.
• Remember that no detection method is infallible. Heavily edited AI text or highly formulaic human writing can produce misleading scores.
• Use the per-indicator breakdown to identify specific patterns rather than relying solely on the overall score.
• This tool is best used as one signal among many. Combine its output with your own judgment, contextual knowledge, and other verification methods.
• All analysis happens locally in JavaScript. Your text never leaves your device, making it safe for confidential documents, student submissions, and proprietary content.
• The detector works with any English-language text including essays, articles, blog posts, emails, and creative writing.