AI-style Writing Linter

Find English and Chinese stock phrases, repeated openings, recurring phrases and monotonous sentence lengths, with evidence and editing prompts—not an authorship verdict.

CV = population standard deviation / mean sentence length, computed separately for word units and Han-character + word units. A CV below 0.18 after at least six sentences is only an editorial heuristic. Openings repeat in at least three sentences; phrases repeat in three distinct sentences (four words or six Han characters). Academic mode tolerates isolated connectors. Markup exclusions are a bounded heuristic, not a complete Markdown parser.

Editorial suggestions, not evidence of AI authorship. Human writing may match these patterns; generated writing may not. No AI probability, accuracy guarantee or detection-bypass claim is provided.

Lexicons cover English and Chinese only. Script-based sentence units are not language identification. A missing match is not a certificate of human authorship or good writing.

Local rules run on this site’s backend, with no third-party AI call or model download. This is not browser-only processing. Downloads include your original text; share them carefully.