{"id":"cs-grr-nrr-excluding-new-logos","audience":"executives","category":"support-work","technique":"verification","track":"support","level":"advanced","title":"Calculate GRR and NRR and exclude new-logo ARR","free":false,"task":"Write three lines starting \"GRR:\", \"NRR:\" and \"Excluded:\" for the board. Show each calculation with the numbers and the percent, like \"(A - B) / C = 90%\". GRR excludes expansion; NRR includes expansion; neither includes new-logo ARR. Plain text, under 70 words.","materialLabel":"Your material (attached to your prompt automatically)","material":"ARR WALK, FY (US dollars)\nStarting ARR (start of year): 2,000,000\nChurned ARR: 160,000 (Bolt 90,000 and Cedar 70,000)\nContraction (downgrades): 40,000\nExpansion from existing customers: 300,000\nNew-logo ARR (customers signed this year): 500,000\nEnding ARR: 2,600,000\n\nDEFINITIONS\nGRR (gross revenue retention) = (starting ARR - churn - contraction) / starting ARR.\nNRR (net revenue retention) = (starting ARR - churn - contraction + expansion) / starting ARR.\n\nSlide draft from marketing: 'Retention is 96%' (calculated by customer count: 48 of 50 logos stayed). The board asked for revenue-based numbers, not logo counts.","rules":[{"type":"plainText"},{"type":"maxWords","max":70}],"mistakes":[{"title":"Using the logo count","why":"Marketing's 96% looks like retention and the AI repeats it.","fix":"Say: \"Revenue-based numbers only; ignore the 96%.\"","checks":["r2"]},{"title":"Including new logos","why":"The AI uses ending ARR 2,600,000 as part of NRR.","fix":"Say: \"Neither includes new-logo ARR.\"","checks":["r1"]},{"title":"Skipping the working","why":"The AI gives only 90% and 105%.","fix":"Say: \"Show the calculation with numbers.\"","checks":["r1","r0"]},{"title":"Getting markdown back","why":"AI adds bold and headings by default, which show up as stray symbols where this is pasted.","fix":"Say \"plain text, no bold, no headings, no asterisks\".","checks":["plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting and usually runs long, so a vague \"keep it short\" lands well over the limit.","fix":"Cap each part instead of the total, for example \"each line under 15 words\".","checks":["maxWords"]}],"promptHints":[{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no headings"]},{"label":"Sets a length limit","patterns":["\\d+\\s*words","word (limit|count)","under \\d+"]},{"label":"States the formulas","patterns":["grr","nrr","expansion"]},{"label":"Excludes new logos","patterns":["new.logo","exclude"]}],"hint":"Retention metrics hide in definitions. Give the formulas, say what to exclude, and ask for the working.","rubricLabels":["The output is exactly three lines starting GRR:, NRR: and Excluded:","GRR shows (2,000,000 - 160,000 - 40,000) / 2,000,000 = 90% and NRR shows (2,000,000 - 160,000 - 40,000 + 300,000) / 2,000,000 = 105%","Excluded names the $500,000 new-logo ARR, and the output does not use the 96% logo-count figure"]}