{
  "recordVersion": 1,
  "status": "One completed and independently checked workflow; not an overall comparison verdict",
  "runId": "sales-returns-gemini-20261019-03",
  "dateUTC": "2026-10-19",
  "app": "Gemini",
  "round": 3,
  "surface": "Fresh ordinary Gemini web conversation; no Gem, notebook, Canvas, Deep Research or agent mode selected.",
  "visibleConfiguration": {
    "plan": "No verified plan label or subscription price (an Upgrade button is shown; the Usage page offers an AI Plus promotion)",
    "modelEntry": "Auto — Gemini 3 models",
    "thinkingLevel": "High — Extra thorough (selected in the composer; a fresh page reads Low)",
    "lockedAlternatives": [
      "3.1 Pro — Advanced reasoning",
      "4 Argon — Complex tasks"
    ],
    "perResponseLabels": "P1 and P2 'Used 3.5 Flash-Lite High'; P3 and P4 'Used 3.6 Flash with auto selection'"
  },
  "configurationScope": "App-reported labels, not independent backend model identification.",
  "operator": "AI browser operator working for Anomaly, using an existing authorized account",
  "reviewer": "Separate scripts written by the article owner recomputed the checked values from the saved input files; the owner also reread the operator record",
  "notBlinded": true,
  "blindingDisclosure": "The operator read about the first 400 lines of the answer key (row counts, grand total, monthly, category and region units), the full scoring rubric and the previous Gemini run's record, which states the correct P3 rates, before sending P1 at 19:31:35 UTC. Only the four frozen prompts and the synthetic workbook were sent; no expected value or hint was sent. Not blinded; the exposure is stronger than in round 1.",
  "accountState": "Earlier read-only inspection observed memory from past chats OFF, the instructions feature ON with none saved, and chat history saved. This operator did not re-inspect those settings. Skills, connected apps and Gems were not inspected. A fresh chat is not a guarantee of a memory-free session.",
  "independenceDisclosure": "Vendor-authored, not blinded or independent of Anomaly. Unmatched subscriptions and account personalization across apps.",
  "input": {
    "name": "sales-returns-workbook.xlsx",
    "bytes": 2575274,
    "sha256": "5d25f5d9d877c895736cf91361de94742a8f50af8f4d74a1ea2240929e17f3ed",
    "url": "../sales-returns-workbook.xlsx",
    "provenance": "Frozen synthetic five-sheet workbook",
    "upload": "Browser-created File through the app's attachment path"
  },
  "reference": {
    "url": "../reference-values.csv",
    "method": "Frozen SQL reference with independent JavaScript and Python/CSV checks"
  },
  "promptsAndInputDownload": "../comparison-workbook-and-checks-v1.zip",
  "prompts": [
    {
      "prompt": "P1",
      "sentUTC": "2026-10-19T19:31:35.048Z",
      "secondsToStopButtonGone": 45.7
    },
    {
      "prompt": "P2",
      "sentUTC": "2026-10-19T19:33:44.620Z",
      "secondsToStopButtonGone": 19.5
    },
    {
      "prompt": "P3",
      "sentUTC": "2026-10-19T19:35:14.826Z",
      "secondsToStopButtonGone": 17.3
    },
    {
      "prompt": "P4",
      "sentUTC": "2026-10-19T19:36:32.637Z",
      "secondsToStopButtonGone": 36.9
    }
  ],
  "timingDefinition": "Seconds from the page-clock send click to the stop button disappearing. The shared browser tab was hidden: for P1 the app did not dispatch the message until 12.6 s after the click. Stop-button disappearance is a proxy, not a verified generation duration.",
  "access": {
    "allFourPromptsCompletedFirstAttempt": true,
    "clarificationQuestions": 0,
    "recoveryMessages": 0,
    "inConversationQuotaOrAccessBlock": false,
    "toolEventsNotAppEvents": "The operator's first tab was moved to another site by a different actor before message 1; the run continued in a new tab with a location check before every action."
  },
  "checks": [
    {
      "id": "N1",
      "check": "All five sheet row counts",
      "result": "PASS",
      "reason": null,
      "observed": "Sales 12,120 rows; Returns 600; Products 24; Categories 5; Regions 4 (answer text; its code printed the same shapes)",
      "reference": "Sales 12120 raw (12000 unique); Returns 600; Products 24; Categories 5; Regions 4"
    },
    {
      "id": "N2",
      "check": "Key columns and uniqueness",
      "result": "PASS",
      "reason": null,
      "observed": "Sales.line_id: Not unique (12,120 rows, 120 duplicate line_id values, exact duplicates); Returns.return_id, Products.product_id, Categories.category_id, Regions.region_id: Unique",
      "reference": "Sales line_id not unique in the raw sheet; the other four keys unique"
    },
    {
      "id": "N3",
      "check": "Date extents",
      "result": "PASS",
      "reason": null,
      "observed": "Sales order_date 2026-01-01 to 2026-06-30; Returns return_date 2026-01-03 to 2026-06-30",
      "reference": "2026-01-01..2026-06-30; 2026-01-03..2026-06-30"
    },
    {
      "id": "N4",
      "check": "Three required data-quality observations",
      "result": "PASS",
      "reason": null,
      "observed": "(a) 'Exact Duplicate Sales Rows: ... 120 pairs of identical rows' (12,120 rows listed above, resolved by Definition 1); (b) 'Orphan Category (Unused Category): C5 (Seasonal Gifts) ... no products ... zero sold units'; (c) 'There is no price, revenue or cost column' quoted in the section on what cannot be calculated",
      "reference": "DQ1 120 repeated rows; DQ2 category with no products (C5); DQ3 no price/revenue column"
    },
    {
      "id": "N5",
      "check": "Rows before and after deduplication",
      "result": "PASS",
      "reason": null,
      "observed": "Row count before deduplication 12,120; exact duplicates 120; after 12,000",
      "reference": "12120 / 12000"
    },
    {
      "id": "N6",
      "check": "Six monthly units totals",
      "result": "PASS",
      "reason": null,
      "observed": "2026-01 3,456; 2026-02 3,761; 2026-03 4,872; 2026-04 5,643; 2026-05 6,815; 2026-06 8,559",
      "reference": "units_by_month unique_units 3456/3761/4872/5643/6815/8559 (naive raw 3492..8647 not present)"
    },
    {
      "id": "N7",
      "check": "Five category units totals",
      "result": "PASS",
      "reason": null,
      "observed": "Kitchen 9,014; Outdoor 8,535; Office 8,668; Pet Supplies 6,889; Seasonal Gifts '0 (Undefined return rate per Definition 5)'",
      "reference": "C1 9014; C2 8535; C3 8668; C4 6889; C5 0 (kept)"
    },
    {
      "id": "N8",
      "check": "Four regional units totals",
      "result": "PASS",
      "reason": null,
      "observed": "North 11,067; South 9,090; East 7,271; West 5,678",
      "reference": "R1 11067; R2 9090; R3 7271; R4 5678"
    },
    {
      "id": "N9",
      "check": "Grand total and reconciliation",
      "result": "PASS",
      "reason": null,
      "observed": "Grand Total Units Sold 33,106; displayed month, category and region tables each sum to 33,106 (the app's own verification cell printed 33106 three times)",
      "reference": "unique_units 33106 (naive 33436 not present)"
    },
    {
      "id": "N10",
      "check": "Category return numerators and denominators",
      "result": "PASS",
      "reason": null,
      "observed": "returned/sold: Kitchen 244/9,014; Outdoor 460/8,535; Office 160/8,668; Pet Supplies 288/6,889",
      "reference": "244/9014; 460/8535; 160/8668; 288/6889"
    },
    {
      "id": "N11",
      "check": "Category return rates",
      "result": "PASS",
      "reason": null,
      "observed": "2.71%; 5.39%; 1.85%; 4.18%",
      "reference": "2.71; 5.39; 1.85; 4.18 (tolerance 0.01 pp)"
    },
    {
      "id": "N12",
      "check": "No-sales category rate",
      "result": "PASS",
      "reason": null,
      "observed": "Seasonal Gifts: returned 0, sold 0, rate 'UNDEFINED' with 'Cannot be defined. Division by zero is mathematically undefined, and Definition 5 explicitly requires zero-sold categories to be reported as UNDEFINED (not 0%)'",
      "reference": "C5 undefined (zero sold units)"
    },
    {
      "id": "J1",
      "check": "Duplicate-safe joins",
      "result": "PASS",
      "reason": null,
      "observed": "Returned units by category 244 / 460 / 160 / 288 (sum 1,152 = total returned units); sales deduplicated before the join; the app's code aggregates sales (drop_duplicates) and returns separately",
      "reference": "not the fan-out values 248 / 472 / 167 / 293"
    },
    {
      "id": "J2",
      "check": "Complete output groups",
      "result": "PASS",
      "reason": null,
      "observed": "5 categories (C5 kept), 4 regions, 6 months present in the displayed tables",
      "reference": "5 / 4 / 6"
    },
    {
      "id": "J3",
      "check": "No invented period or financial values",
      "result": "PASS",
      "reason": null,
      "observed": "No month after 2026-06 anywhere in the text, tables, code outputs, chart or workbook; no revenue or money amounts (the only mentions of revenue/price are statements that they cannot be calculated)",
      "reference": "no July-December values, no revenue, no money"
    },
    {
      "id": "F1",
      "check": "Chart agrees with checked monthly totals",
      "result": "PASS",
      "reason": null,
      "observed": "Chart (displayed 1600x1000; downloaded PNG 2400x1500): six bars 2026-01..2026-06 with labels 3,456 / 3,761 / 4,872 / 5,643 / 6,815 / 8,559; axes 'Month' and 'Units Sold'; title 'Total Units Sold by Month (Jan - Jun 2026)'; no month after June",
      "reference": "units_by_month"
    },
    {
      "id": "F2",
      "check": "Exactly three supported findings",
      "result": "FAIL",
      "reason": null,
      "observed": "Exactly three numbered findings. Finding 2 states 'The absolute month-over-month unit increase continuously accelerated' and lists +305, +1,111, +771, +1,172, +1,744; the increases are not monotonic (+771 is smaller than +1,111). Findings 1 and 3 reconcile (+147.66%; May+June 15,374 = 46.44% of 33,106).",
      "reference": "every quantitative statement or comparison must reconcile with units_by_month"
    },
    {
      "id": "W1",
      "check": "Reproducible supplied working",
      "result": "PASS",
      "reason": null,
      "observed": "P2 code shown in the answer (block 6) and all executed P2/P3 cells run unchanged and give the key's monthly, category, region values and grand total; P4 final generating cell (block 2) runs unchanged and recreates the PNG and XLSX; P4 code shown in the answer (block 4) runs and prints the correct monthly table",
      "reference": "units_by_month; units_by_category; units_by_region; return_rate_by_category"
    },
    {
      "id": "W2",
      "check": "Working agrees with reported counts and tables",
      "result": "PASS",
      "reason": null,
      "observed": "Row counts (12,120 -> 12,000), steps, code and the displayed tables agree with each other and with the app's own code outputs (blocks 1, 3, 5)",
      "reference": "grand_total, units_by_*"
    },
    {
      "id": "E1",
      "check": "Delivered files retrieved and reopened",
      "result": "PASS",
      "reason": null,
      "observed": "Two files retrieved in-page and reopened: monthly_units_chart.png (2400x1500, six labelled bars) and sales_returns_summary_2026.xlsx (sheets 'Monthly Sales Summary' and 'Category Summary'); units by month 3456..8559 as numbers, Total =SUM -> 33,106 after LibreOffice recalculation; category sold/returned units 9014/244, 8535/460, 8668/160, 6889/288, 0/0; rates =D/C -> 2.71 / 5.39 / 1.85 / 4.18%, Seasonal Gifts 'UNDEFINED'",
      "reference": "units_by_month; units_by_category; return_rate_by_category"
    },
    {
      "id": "E2",
      "check": "XLSX summary values",
      "result": "PASS",
      "reason": null,
      "observed": "An XLSX chip 'sales_returns_summary_2026' (XLSX) with Open; the file downloads (7,709 bytes, sha256 0d10387d...), opens with openpyxl and LibreOffice, values equal the reference",
      "reference": "same as E1"
    },
    {
      "id": "E3",
      "check": "Claimed workbook editability",
      "result": "NOT-ASSESSED",
      "reason": "NA-NOT-CLAIMED",
      "observed": "The answer does not claim formulas or a native chart object in the workbook ('Your Excel summary workbook and monthly sales chart are ready'; the chart is the PNG).",
      "reference": "-"
    }
  ],
  "scoringNote": "22 separate checks: 20 PASS, 1 FAIL, 1 NOT-ASSESSED. No weighted score or accuracy percentage. Completion, access, timing and cost are separate.",
  "mainDistinction": "Sales totals, return rates and both files are correct. The one failed check is a wrong statement in the written findings (F2): month-over-month unit increases of 305, 1,111, 771, 1,172 and 1,744 are not 'continuously accelerating'. The chat's growth figures +8.82% and +15.82% are truncated (the workbook gives 8.83% and 15.83%), the first Excel-generating cell hit an ImportError and was rewritten in the same response, and the code printed in the answer builds a smaller workbook than the one delivered.",
  "files": [
    {
      "name": "monthly_units_chart.png",
      "bytes": 111036,
      "sha256": "1f1cb6f4f6ef9d68e2b0ac8c17068c97545ee9a04fa58d0c01f0ea65a19aa69c",
      "url": "/blog/best-ai-model-for-data-analysis/r3-gemini/monthly_units_chart.png",
      "kind": "Unmodified app-delivered file"
    },
    {
      "name": "sales_returns_summary_2026.xlsx",
      "bytes": 7709,
      "sha256": "0d10387d80bdd4e1bcee41f4d65262dd66178c357ca8b9c180a287dfc3b49870",
      "url": "/blog/best-ai-model-for-data-analysis/r3-gemini/sales_returns_summary_2026.xlsx",
      "kind": "Unmodified app-delivered file"
    }
  ],
  "retrievalMethod": "The PNG and workbook were fetched in-page from the app's download links and hash-checked against copies on the verifying machine; native browser Download buttons were not used.",
  "verification": {
    "formulaCells": 10,
    "errorCells": 0,
    "nativeCharts": 1,
    "formulaCachesAbsent": true,
    "independentSecondCheck": "writer-r3-gemini-independent-verification.json confirms the monthly, category, region and rate values in the chat text and the monthly and category figures in the workbook; F2 recomputed from the answer's own numbers"
  },
  "usageAndPrice": "Usage page (shared account): current usage 3% before, 11% after; weekly 1% before and after. Shared-account counters cannot be attributed to this workflow alone; the AI Plus promotion is not proof of the current plan.",
  "limitations": [
    "One synthetic fixture, one workflow and one date. Three workflows per app do not estimate population reliability.",
    "No underlying-model, large-file, native add-in, statistical-inference or unattended-refresh conclusion.",
    "Plans, effort settings and account personalization differ across the three apps; this compares app configurations.",
    "Not blinded and vendor-authored."
  ]
}