Grade how readable a text document is by pairing EXACT, code-computed readability metrics (Flesch Reading Ease, Flesch-Kincaid grade level, syllable and hard-word counts) with an LLM's plain-language coaching (who can read this, and the two edits that would lower the grade most). Use when you need a grounded readability assessment where the scores must be correct, not estimated. Triggers: 'how readable is this', 'reading level', 'grade level', 'make this easier to read', 'plain language check'.
