ToolSpotAI

AI Writing Style Checker

Lightweight heuristics on sentence length, word variety, and a few overused patterns—editing help, not a courtroom AI detector.

Developer

Honest limitation: this does not scan model weights or the internet. It uses simple heuristics writers use to tighten drafts—useful for editing, not for accusing someone of using AI.

Readability-style score

84

Higher = more varied, less “templatey” by our crude rules—not a label of human vs machine.

  • Words: 28
  • Sentences: 2
  • Avg words / sentence: 14.0
  • Lexical diversity: 89%
  • Passive-style hits: 0
  • Generic buzzword hits: 0
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What is AI Writing Style Checker?

Everyone wants a magic button that labels text “human” or “machine.” Outside specialized labs and productized APIs with their own limits, most sites should not pretend. What we offer instead is closer to what a careful editor does on a first pass: look at whether sentences all sound the same length, whether vocabulary repeats a little too cleanly, and whether a few tired filler phrases show up too often. That can help you revise drafts so they sound more like you—not because the score is gospel, but because the stats point at where readers might tune out.

How It Works

Paste text. We tokenize words roughly, estimate sentences, compute average length, a simple uniqueness ratio, count a handful of passive-voice-shaped patterns, and flag a short list of buzzwords that show up in bland marketing copy. The score blends those signals into a single number for convenience. It is not calibrated like a standardized test—think “directionally useful,” not “forensic.”

Formula

Score = clamp( base + f(diversity, sentence length) − g(passive, buzzwords) , 0, 100 ) — illustrative weighting

Formula Explained

Weights favor diverse vocabulary and varied pacing, and nudge down uniform, passive, buzzword-heavy prose. You can disagree with the score and still use the breakdown lines to edit.

Example

A short email might score higher than a dense legal memo—not because the memo is AI, but because the memo’s uniformity looks similar to naive measures. Context always wins.

Tips & Best Practices

  • Read aloud: if you stumble, the reader will too.
  • Swap a few generic adjectives for concrete nouns and verbs.
  • Break up strings of medium-length sentences with a short one.

Common Use Cases

  • Bloggers tightening drafts before publish
  • Students learning editing skills—not cheating policies

Frequently Asked Questions

No. It does not inspect model internals or compare against a database of AI text. It applies simple statistics and pattern counts humans also use when line-editing.

Because jargon-heavy or highly uniform professional writing can look “smooth” to naive heuristics. Use judgment.

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