AI Content Detector

How Does This AI Content Detector Work?

This tool analyzes your text using multiple heuristic signals that distinguish human writing from AI-generated content. It runs entirely in your browser with no server calls, so your text remains completely private.

Heuristic Signals We Analyze

• Sentence length uniformity - AI tends to produce sentences of similar length, while humans naturally vary between short punchy sentences and longer complex ones.
• Vocabulary diversity - Measured by the Type-Token Ratio (TTR). Humans typically use a wider range of vocabulary, while AI often recycles the same words.
• Transition word density - AI models overuse words like "however," "moreover," "furthermore," and "additionally" to connect ideas.
• Em dash usage - AI writing frequently uses em dashes as a stylistic connector, far more than typical human writing.
• Paragraph length uniformity - AI produces paragraphs of remarkably similar length, while humans write with more structural variety.
• Passive voice frequency - AI tends to use passive constructions more often than most human writers.
• Word repetition patterns - AI has a tendency to repeat certain words and phrases at higher frequencies than natural writing.

Limitations

No AI detector is 100% accurate. This tool uses statistical heuristics rather than a trained neural network, so it works best on longer texts (200+ words). Heavily edited AI text or intentionally formulaic human writing can produce inaccurate results. Use this tool as one signal among several when evaluating content authenticity.

Privacy First

Your text never leaves your browser. There are no API calls, no server-side processing, and no data logging. This makes SecureBin's AI Detector ideal for checking sensitive or confidential content that you cannot paste into cloud-based tools.