{
  "runId": "r202610079c02",
  "date": "2026-10-07",
  "startedAt": "2026-10-07T02:12:52.655Z",
  "finishedAt": "2026-10-07T02:20:10.153Z",
  "model": "gemini-3.8-flash",
  "settings": {
    "model": "gemini-3.8-flash",
    "requests": 12,
    "pauseMs": 1500,
    "maxOutputTokens": 300,
    "timeoutMs": 60000,
    "retries": 2
  },
  "prices": {
    "input": 0.75,
    "cachedInput": 0.075,
    "output": 3.75,
    "storagePerHour": 0.5,
    "minTokens": 4096
  },
  "totals": {
    "requests": 96,
    "errors": 0,
    "implicitEligible": 84,
    "implicitHits": 0,
    "costUsd": 0.3777
  },
  "layouts": [
    {
      "id": "stable",
      "title": "Stable prefix",
      "description": "Instructions, handbook, examples and sorted tools are identical on every request. Only the question changes, at the end.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5398,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 22027,
      "reusablePrefixTokens": 5382,
      "reusableShare": 0.9971,
      "firstTokenMsMedian": 2101.5,
      "firstTokenMsMin": 1577,
      "firstTokenMsMax": 23010,
      "totalMsMedian": 2681,
      "costUsd": 0.052715,
      "costPerRequestUsd": 0.004393,
      "projectedInputUsdPer1k": 0.4157,
      "fullInputUsdPer1k": 4.0485
    },
    {
      "id": "timestamp-top",
      "title": "Timestamp at the top",
      "description": "The current time, to the millisecond, is the first line after the tag in the system instruction.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5429,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 3194,
      "reusablePrefixTokens": 783,
      "reusableShare": 0.1443,
      "firstTokenMsMedian": 1968,
      "firstTokenMsMin": 1533,
      "firstTokenMsMax": 2605,
      "totalMsMedian": 2447,
      "costUsd": 0.052304,
      "costPerRequestUsd": 0.004359,
      "projectedInputUsdPer1k": 4.0718,
      "fullInputUsdPer1k": 4.0718
    },
    {
      "id": "timestamp-bottom",
      "title": "Timestamp at the bottom",
      "description": "The same timestamp, moved into the user message after the question.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5429,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 22037,
      "reusablePrefixTokens": 5403,
      "reusableShare": 0.9953,
      "firstTokenMsMedian": 2001.5,
      "firstTokenMsMin": 1674,
      "firstTokenMsMax": 2595,
      "totalMsMedian": 2422.5,
      "costUsd": 0.052199,
      "costPerRequestUsd": 0.00435,
      "projectedInputUsdPer1k": 0.4247,
      "fullInputUsdPer1k": 4.0718
    },
    {
      "id": "user-top",
      "title": "Customer details at the top",
      "description": "Each request comes from a different customer, whose name and email open the system instruction.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5419.5,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 3167,
      "reusablePrefixTokens": 774,
      "reusableShare": 0.1429,
      "firstTokenMsMedian": 1799.5,
      "firstTokenMsMin": 1571,
      "firstTokenMsMax": 2934,
      "totalMsMedian": 2445.5,
      "costUsd": 0.052603,
      "costPerRequestUsd": 0.004384,
      "projectedInputUsdPer1k": 4.0646,
      "fullInputUsdPer1k": 4.0646
    },
    {
      "id": "user-bottom",
      "title": "Customer details at the bottom",
      "description": "The same customer details, sent in the user message before the question.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5419.5,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 22042,
      "reusablePrefixTokens": 5389,
      "reusableShare": 0.9944,
      "firstTokenMsMedian": 2116.5,
      "firstTokenMsMin": 1722,
      "firstTokenMsMax": 4127,
      "totalMsMedian": 2953.5,
      "costUsd": 0.053762,
      "costPerRequestUsd": 0.00448,
      "projectedInputUsdPer1k": 0.4271,
      "fullInputUsdPer1k": 4.0646
    },
    {
      "id": "shuffled-tools",
      "title": "Tools in a different order",
      "description": "The same seven tools in a different order on each request, as when a tool list is built from an unordered set.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5401,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 44,
      "reusablePrefixTokens": 11,
      "reusableShare": 0.002,
      "firstTokenMsMedian": 2069,
      "firstTokenMsMin": 1729,
      "firstTokenMsMax": 4685,
      "totalMsMedian": 2684.5,
      "costUsd": 0.053211,
      "costPerRequestUsd": 0.004434,
      "projectedInputUsdPer1k": 4.0508,
      "fullInputUsdPer1k": 4.0508
    },
    {
      "id": "question-first",
      "title": "Question before the handbook",
      "description": "A retrieval-style prompt: short instructions, then a user message with the question first and the handbook and examples after it.",
      "requests": 12,
      "errors": 0,
      "hits": 0,
      "promptTokensMedian": 5406,
      "cachedTokensMedian": 0,
      "cachedShare": 0,
      "reusablePrefixChars": 4408,
      "reusablePrefixTokens": 1086,
      "reusableShare": 0.2009,
      "firstTokenMsMedian": 1849,
      "firstTokenMsMin": 1469,
      "firstTokenMsMax": 2948,
      "totalMsMedian": 2318,
      "costUsd": 0.052289,
      "costPerRequestUsd": 0.004357,
      "projectedInputUsdPer1k": 4.0545,
      "fullInputUsdPer1k": 4.0545
    },
    {
      "id": "explicit",
      "title": "Explicit cache",
      "description": "The stable prefix is stored once with the cachedContents API (TTL 10 minutes). Each request sends only the question and the cache name.",
      "requests": 12,
      "errors": 0,
      "hits": 12,
      "promptTokensMedian": 5398,
      "cachedTokensMedian": 5384,
      "cachedShare": 0.9972,
      "reusablePrefixChars": null,
      "reusablePrefixTokens": 5384,
      "reusableShare": 0.9972,
      "firstTokenMsMedian": 2299,
      "firstTokenMsMin": 1858,
      "firstTokenMsMax": 14819,
      "totalMsMedian": 2808.5,
      "costUsd": 0.008644,
      "costPerRequestUsd": 0.00072,
      "cache": {
        "tokens": 5384,
        "createMs": 2182,
        "aliveMinutes": 1.1,
        "storageUsd": 0.000049
      },
      "projectedInputUsdPer1k": 0.4143,
      "fullInputUsdPer1k": 4.0485
    }
  ]
}