AI Writing Pattern Analyzer
This browser-only tool reports writing statistics and transparent heuristic flags. It does not determine whether a human or AI wrote the text.
Quick Answer
What is this?
Analyze statistical writing patterns in any text. Check sentence uniformity, vocabulary diversity & filler phrases. Free, private, browser-only.
Who needs it?
Writers and editors checking whether a passage shows statistical patterns typical of AI-generated prose
Bottom line
Scans sentence uniformity, vocabulary diversity, and filler phrases that signal AI writing
How to Analyze Writing Patterns
1. Paste your text. Copy at least 100 words into the input area. For more reliable results, use 300+ words.
2. Review the dashboard.Each metric is color-coded using the product's fixed lower, middle, and higher heuristic bands.
3. Read the explanations. Each metric card explains what it measures and why the ranges differ between AI and human text.
4. Consider the full picture. No single metric is definitive. Look at the overall pattern across all metrics and remember that many legitimate factors affect writing style.
Understanding Writing Pattern Analysis
Statistical writing analysis examines measurable properties of text — sentence structure, word choice diversity, phrase repetition, and punctuation habits — to characterize writing style. These techniques can characterize a sample's style. This implementation does not use a trained classification model or a validation dataset.
Sentence length variation is reported as a standard deviation. A lower value means sentence lengths are more similar within this sample; a higher value means they vary more.
Vocabulary diversity measures the ratio of unique words to total words. The result changes with sample length, subject, genre, quotations, and editing style.
Transition words and filler phrases are counted from fixed lists included in the tool. The counts can help an editor notice repetitive language, but they do not identify who or what wrote it.
It is critical to understand that none of these metrics can prove AI authorship. Writing style is influenced by education, native language, genre conventions, editing processes, and individual habits. This tool provides statistical data points, not conclusions.
Frequently Asked Questions About AI Writing Analyzer
What does this tool actually measure?
This tool calculates sentence-length variation, vocabulary diversity, transition-word density, repeated phrases, paragraph structure, a passive-voice estimate, punctuation frequency, and matches against a fixed phrase list. Its color bands are product heuristics, not validated authorship thresholds.
Can this tool detect AI-written text?
No. This tool analyzes statistical writing patterns only. It cannot determine whether text was written by AI or a human. Many factors affect these patterns, including the writer's native language, editing history, writing style, and subject matter. The results should be used as one data point among many — never as proof.
What does the Writing Pattern Score mean?
The score ranges from 0 to 100 and summarizes how many of the tool's fixed heuristic bands were triggered. It is not a probability, confidence score, or measure of whether a human or AI wrote the text.
What does sentence length uniformity show?
It describes how much sentence length varies within the sample. Genre, editing style, language fluency, and many other factors can change this measurement, so it cannot establish authorship.
What does the phrase-list check do?
It counts matches from a short, fixed list including 'in today's world', 'it's crucial to', and 'plays a vital role'. The list is transparent but not a validated detector; people and software can both use these phrases.
Can ESL writers get flagged unfairly?
Yes. Vocabulary diversity, sentence structure, and phrase choice vary with language background, genre, subject, and editing. The same heuristic band can therefore describe many unrelated kinds of writing and must not be treated as an authorship judgment.
Is my text sent to a server?
No. All analysis happens entirely in your browser using JavaScript. Your text never leaves your device. No data is stored, transmitted, or logged.
Why does the tool require 100 words?
The product requires 100 words so its descriptive measurements are not based on only a few sentences. This minimum does not make the authorship interpretation accurate or validated.
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