AI Detection Score Calculator
Paste your text below to estimate how likely AI detectors would flag it.
AI Detection Tool Accuracy Comparison
Independent testing results (2025-2026)
| Detector | AI Text Accuracy | Human Text Accuracy | False Positive Rate | Best Use |
|---|---|---|---|---|
| GPTZero | 82% | 88% | 12% | Academic screening |
| Originality.ai | 86% | 91% | 9% | Content marketing |
| Turnitin AI | 78% | 94% | 6% | University papers |
| Copyleaks | 80% | 89% | 11% | General purpose |
| Sapling AI | 74% | 86% | 14% | Quick checks |
| Winston AI | 83% | 90% | 10% | Publishing |
How We Calculate This
This ai detection score calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
How to Convert Oven Recipes to Air Fryer
This calculator uses heuristic analysis to estimate how likely AI detection tools (GPTZero, Originality.ai, Turnitin) would flag your text. It analyzes the same linguistic features these tools look for.
The basic rule:
- AI text tends to have uniform sentence lengths — human writing varies more in rhythm and structure
- AI frequently uses certain phrases: 'delve into', 'it's important to note', 'in today's world', 'landscape', 'leverage'
- Low vocabulary diversity (many repeated common words) is a strong AI signal
- AI text tends toward medium-length sentences (15-25 words) and avoids very short or very long ones
No detector is perfect. AI detection tools have false positive rates of 5-15%, meaning human-written text is sometimes flagged incorrectly. This tool provides an estimate, not a guarantee. The best approach is to add your genuine voice, specific examples, and personal experience to any text.
When Would You Use This Calculator?
This ai detection score calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
How accurate are AI detection tools?
Most AI detectors claim 85-98% accuracy, but independent testing shows real-world accuracy of 60-85%, with significant false positive rates (5-15%). They work best on unedited AI text and struggle with AI text that has been humanized or edited. No detector is reliable enough for high-stakes decisions.
What makes text look AI-generated?
Key signals include: uniform sentence length, overuse of transitional phrases, certain vocabulary choices ('delve', 'landscape', 'leverage', 'crucial'), lack of personal anecdotes or specific examples, overly balanced paragraph structure, and a tendency to hedge with qualifiers. AI text also tends to lack the messy complexity of genuine human thought.
How can I make AI text less detectable?
Add personal voice and specific examples from real experience. Vary sentence length dramatically — mix very short punchy sentences with longer complex ones. Use colloquial language and contractions. Remove common AI phrases. Add opinions, humor, or emotional language. Restructure paragraphs to be less formulaic.
Does this tool actually detect AI?
This tool estimates detection probability using the same heuristics that AI detectors use — it does not determine with certainty whether text was AI-generated. It is a useful guide for understanding what triggers detectors, but should not be used as definitive proof of AI or human authorship.