Text A
0 words
Compare two text files or pasted passages, inspect the writing signals, and optionally test whether a candidate text fits a known writer's style.
Text B
0 words
Optional Reference Writing
Paste or upload known writing by the person. The tool compares Text B against that reference to flag style mismatch. It is not a standalone AI detector.
0 words
Similarity score
0%
Result
confidence
threshold
Method Agreement
Word-Length Curve
Text A Text B
Sentence Rhythm
Text A Text B
Text Metrics
| Sample | Words | Sentences | Avg word | Avg sentence | TTR | Hapax |
|---|
Function-Word Differences
| Word | A / 1k | B / 1k | Gap |
|---|
Punctuation Differences
| Mark | A / 1k chars | B / 1k chars | Gap |
|---|
User Guide
1. Compare two samples
Paste text into Text A and Text B, or upload plain text files. Use at least 500 words per sample when possible. The tool can run on shorter passages, but confidence drops quickly.
2. Read the evidence
The score combines function words, character n-grams, word-length curves, punctuation, sentence rhythm, and lexical richness. Review the charts and differences before trusting the verdict.
3. Check AI-style mismatch
Add known writing in the reference box. The audit compares Text B against the person's normal variation. It can flag an atypical passage, but it cannot prove that a passage was AI-written.
4. Tune the run
Strict sensitivity raises the same-author threshold. More frequent words and 3-gram character patterns usually work well for English prose. Ignore quoted blocks when emails or essays contain long citations.