Text & Content

AI Text Detector - Detect if text was likely AI-generated

Detect if text was likely AI-generated

Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-09

Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.

Region
Loading calculator...

Frequently asked questions

How accurate is detection?

No detector is 100% accurate. Treat results as indicators, not proof. False positives occur.

What is perplexity?

How predictable text is. AI tends to be more predictable (lower perplexity) than humans.

Can AI text be undetectable?

Edited AI text or mixed human/AI writing is harder to detect. Results are probabilistic.

Related tools

About this tool

Inputs

  • Text to Analyze

Results

  • AI Probability
  • Human Probability
  • Confidence Level
  • AI Indicators Found
  • Suspicious Sections
  • Burstiness Score
  • Perplexity Score
  • Low
  • Medium
  • High
  • Low lexical diversity
  • Low sentence length variance
  • Low perplexity
  • Repeated phrases
  • No strong AI indicators detected
  • No suspicious sections highlighted
  • Please enter at least 100 characters

Some tasks are simple but tedious. The AI Text Detector does the work in a fraction of the time it would take by hand. Text analysis tools quantify writing — word counts, readability scores, and character frequencies. Enter text to analyze. The tool processes your data and returns ai probability, human probability, confidence level and other key metrics. People frequently need to detect if text was likely ai-generated but lack a quick way to do it — this tool fills that gap.

No detector is 100% accurate. Treat results as indicators, not proof. False positives occur. Keyword density = (keyword occurrences ÷ total words) × 100%. Run a final spell- check and grammar pass after any automated text transformation. Character encoding matters: what looks the same on screen may differ in byte representation. Compare multiple scenarios by saving or noting each result before changing inputs.