Free AI-text readability score — quick heuristic signals (perplexity, burstiness, readability) for any text.
AI output detector readability score
What it means
Higher readability is easier to scan. Higher AI-likeness is only a rough heuristic based on sentence length, repetition, and fluency — not proof of authorship.
Important
This tool does not detect AI with certainty. It helps you review readability, phrasing, and pattern uniformity — useful for editorial QA, not for courtroom-grade detection.Was AI Output Detector Readability Score useful?
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The QuickToolz AI Output Detector & Readability Score gives you fast heuristic signals about a piece of writing — Flesch reading ease, Flesch-Kincaid grade level, average sentence length, burstiness, and lexical diversity. These are the same building blocks that AI-detection tools use as inputs.
⚠️ No detector is 100% reliable. This tool is for editorial insight and writing improvement — not for academic enforcement or accusations. Real detectors have ~30–50% false-positive rates on well-edited human text.
Flesch reading ease: 0–100 (higher = easier)
Flesch-Kincaid grade: US school grade level
Average sentence length: tells you cadence
Burstiness: variance in sentence length — AI tends to be flatter
Lexical diversity: unique words / total words
Everything you need, nothing you don’t. Built for speed and simplicity.
Flesch, Flesch-Kincaid, burstiness, diversity, and more.
Each score explained, not just a number.
Text never leaves your browser.
Everything you need, nothing you don’t. Built for speed and simplicity.
Drop in 200+ words for meaningful signal.
Got questions? We’ve got answers. Common questions about AI Output Detector Readability Score.
Five heuristic metrics with interpretation.
Vary sentence length, simplify, recheck scores.