{
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  "publicationAuthorized": true,
  "proposedCanonicalUrl": "https://kingy.ai/ai-model-price-stability-report-2026/",
  "title": "AI Model Price Stability: A 31,946-Observation Audit",
  "deck": "Kingy retained 31,946 price observations from 1,861 unique archive captures across 152 raw series. After withholding 18 scope-ambiguous series, 134 series support 157 price states and 23 machine-detected value transitions.",
  "findings": [
    {
      "id": "archive-scale",
      "statement": "31,946 price observations were extracted from 1,861 unique archive captures across 152 vendor/model/component series.",
      "evidence": {
        "rawObservations": 31946,
        "archiveCaptures": 1861,
        "rawSeries": 152
      }
    },
    {
      "id": "defensible-boundary",
      "statement": "134 series and 25,046 observations pass the one-value-per-timestamp scope gate.",
      "evidence": {
        "eligibleSeries": 134,
        "eligibleObservations": 25046
      }
    },
    {
      "id": "observed-change-count",
      "statement": "23 machine-detected value transitions occur across 15 series; they are candidates for the stricter editorial change ledger, not automatically verified price-change claims.",
      "evidence": {
        "observedTransitions": 23,
        "changedSeries": 15,
        "priceStates": 157
      }
    },
    {
      "id": "scope-hold",
      "statement": "18 series covering 6,900 observations are held because concurrent scoped prices cannot be disambiguated from the retained fields.",
      "evidence": {
        "heldSeries": 18,
        "heldObservations": 6900
      }
    }
  ],
  "providerSummary": [
    {
      "vendorId": "anthropic",
      "models": 17,
      "eligibleSeries": 48,
      "observations": 15826,
      "priceStates": 58,
      "machineDetectedTransitions": 10,
      "firstObservedAt": "2024-06-20T17:25:20Z",
      "lastObservedAt": "2026-07-26T21:18:27Z"
    },
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      "vendorId": "google",
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      "eligibleSeries": 35,
      "observations": 7461,
      "priceStates": 45,
      "machineDetectedTransitions": 10,
      "firstObservedAt": "2024-08-28T06:14:07Z",
      "lastObservedAt": "2026-08-02T06:37:32Z"
    },
    {
      "vendorId": "openai",
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      "eligibleSeries": 51,
      "observations": 1759,
      "priceStates": 54,
      "machineDetectedTransitions": 3,
      "firstObservedAt": "2025-02-01T23:27:29Z",
      "lastObservedAt": "2026-06-16T14:56:02Z"
    }
  ],
  "transitionsByMonth": [
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      "month": "2024-10",
      "changes": 2
    },
    {
      "month": "2024-11",
      "changes": 4
    },
    {
      "month": "2024-12",
      "changes": 4
    },
    {
      "month": "2025-06",
      "changes": 3
    },
    {
      "month": "2025-09",
      "changes": 2
    },
    {
      "month": "2025-10",
      "changes": 5
    },
    {
      "month": "2026-03",
      "changes": 1
    },
    {
      "month": "2026-04",
      "changes": 2
    }
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      "proposedPath": "/ai-price-stability/google/gemini-2-5-flash-preview/cache_read/",
      "title": "Gemini 2.5 Flash Preview cache read price history",
      "vendorId": "google",
      "modelId": "gemini-2-5-flash-preview",
      "modelDisplay": "Gemini 2.5 Flash Preview",
      "component": "cache_read",
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      "modelDisplay": "Claude 3.5 Haiku",
      "component": "cache_read",
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    },
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      "seriesId": "google:gemini-robotics-er-preview:input",
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    },
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      "title": "o3 output price history",
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    }
  ],
  "citation": {
    "suggested": "Kingy.ai, “AI Model Price Stability: A 31,946-Observation Audit,” dataset version 2026-08-16.",
    "short": "Source: Kingy.ai AI Model Price Stability dataset (2026-08-16).",
    "machineReadableDataset": "/wp-content/uploads/price-ledger/model-price-stability-2026-08-16.json",
    "csvDataset": "/wp-content/uploads/price-ledger/model-price-stability-2026-08-16.csv"
  }
}