LLM cliché highlighter

The LLM cliché highlighter is a browser-based tool designed to identify and flag repetitive, formulaic language commonly produced by artificial intelligence. Users can paste text into the interface to detect specific patterns, such as the phrase "no fluff, no filler" or the expression "sit with that."

The tool functions entirely within the user's browser and includes features like toggleable pattern detection, sentence highlighting, and a summary of match counts. It also offers local storage support to save data between sessions, allowing for quick navigation through identified clichés within a document.

Simon Willison created this utility out of frustration with the prevalence of predictable, robotic phrasing in AI-generated content. By highlighting these patterns, the tool helps writers and readers recognize the specific linguistic markers that often signal text written by a language model, providing a clearer view of how AI influences modern writing styles.