{
  "date": "2026-10-10",
  "hardware": {
    "chip": "Apple M2",
    "ramBytes": 17179869184,
    "platform": "macOS arm64"
  },
  "fixture": {
    "file": "tests/fixtures/jfk.wav",
    "durationSeconds": 11,
    "samples": 176000,
    "wordTimestamps": true
  },
  "cliFreshDownloadWallSeconds": 1.16,
  "node22": {
    "node": "v22.22.2",
    "coldMs": 64.56587499999999,
    "clipSeconds": 11,
    "timestamps": true,
    "times": [
      {
        "firstTokenMs": 296.5,
        "decodeTokensPerSecond": 118.8,
        "totalMs": 579.2775
      },
      {
        "firstTokenMs": 266.1,
        "decodeTokensPerSecond": 126.8,
        "totalMs": 530.263166
      },
      {
        "firstTokenMs": 256.1,
        "decodeTokensPerSecond": 126.8,
        "totalMs": 520.125417
      },
      {
        "firstTokenMs": 257.5,
        "decodeTokensPerSecond": 127.5,
        "totalMs": 520.2453329999998
      },
      {
        "firstTokenMs": 256.3,
        "decodeTokensPerSecond": 125.7,
        "totalMs": 522.6864169999999
      },
      {
        "firstTokenMs": 257,
        "decodeTokensPerSecond": 126.6,
        "totalMs": 521.739333
      },
      {
        "firstTokenMs": 256.7,
        "decodeTokensPerSecond": 126.4,
        "totalMs": 521.2847500000003
      },
      {
        "firstTokenMs": 255.8,
        "decodeTokensPerSecond": 127,
        "totalMs": 519.4172079999994
      },
      {
        "firstTokenMs": 256.3,
        "decodeTokensPerSecond": 126.9,
        "totalMs": 520.9762920000003
      },
      {
        "firstTokenMs": 256.5,
        "decodeTokensPerSecond": 126.6,
        "totalMs": 520.5271250000005
      }
    ],
    "rss": [
      222674944, 222707712, 188940288, 188940288, 188989440, 170360832, 170409984, 170409984,
      171163648, 171196416
    ]
  },
  "node24": {
    "node": "v24.21.0",
    "coldMs": 103.184958,
    "clipSeconds": 11,
    "timestamps": true,
    "times": [
      {
        "firstTokenMs": 293.5,
        "decodeTokensPerSecond": 122.8,
        "totalMs": 568.6085419999999
      },
      {
        "firstTokenMs": 259.4,
        "decodeTokensPerSecond": 127.2,
        "totalMs": 523.5230830000002
      },
      {
        "firstTokenMs": 252.3,
        "decodeTokensPerSecond": 128,
        "totalMs": 513.4110409999998
      },
      {
        "firstTokenMs": 250.7,
        "decodeTokensPerSecond": 131.2,
        "totalMs": 506.7804160000003
      },
      {
        "firstTokenMs": 250.7,
        "decodeTokensPerSecond": 130.4,
        "totalMs": 508.06054099999983
      },
      {
        "firstTokenMs": 249.9,
        "decodeTokensPerSecond": 123.9,
        "totalMs": 519.3345000000004
      },
      {
        "firstTokenMs": 260.6,
        "decodeTokensPerSecond": 97.8,
        "totalMs": 600.067333
      },
      {
        "firstTokenMs": 295.9,
        "decodeTokensPerSecond": 125.9,
        "totalMs": 559.9714170000002
      },
      {
        "firstTokenMs": 250.6,
        "decodeTokensPerSecond": 130.6,
        "totalMs": 507.69987500000025
      },
      {
        "firstTokenMs": 249.8,
        "decodeTokensPerSecond": 130.4,
        "totalMs": 507.4645419999997
      }
    ],
    "rss": [
      232423424, 215793664, 215793664, 198885376, 198901760, 198918144, 198950912, 195362816,
      195379200, 195411968
    ]
  },
  "browsers": [
    {
      "engine": "chromium",
      "browser": "156.0.8078.4",
      "coldMs": 114.70000004768372,
      "warmCacheMs": 51.299999952316284,
      "speechTimings": {
        "firstTokenMs": 276.3,
        "decodeTokensPerSecond": 129.3,
        "totalMs": 537.7000000476837
      },
      "wordCount": 22,
      "helpers": {
        "sampleCount": 16000,
        "mean": 0.5000152587890625,
        "corrupt": "AUDIO_DECODE_FAILED",
        "long": "AUDIO_TOO_LONG",
        "decodeAborted": "ABORTED",
        "autoSamples": 320,
        "manualSamples": 16000,
        "same": true,
        "manualSame": true,
        "cancelledCode": "ABORTED",
        "lateCode": "ABORTED",
        "lateTracksStopped": true,
        "denied": "MICROPHONE_DENIED",
        "stops": 8
      },
      "externalRequests": []
    },
    {
      "engine": "firefox",
      "browser": "157.0",
      "coldMs": 196,
      "warmCacheMs": 129,
      "speechTimings": {
        "firstTokenMs": 336,
        "decodeTokensPerSecond": 102.7,
        "totalMs": 663
      },
      "wordCount": 22,
      "helpers": {
        "sampleCount": 16000,
        "mean": 0.5003001093864441,
        "corrupt": "AUDIO_DECODE_FAILED",
        "long": "AUDIO_TOO_LONG",
        "decodeAborted": "ABORTED",
        "autoSamples": 320,
        "manualSamples": 16000,
        "same": true,
        "manualSame": true,
        "cancelledCode": "ABORTED",
        "lateCode": "ABORTED",
        "lateTracksStopped": true,
        "denied": "MICROPHONE_DENIED",
        "stops": 8
      },
      "externalRequests": []
    },
    {
      "engine": "webkit",
      "browser": "27.2",
      "coldMs": 134,
      "warmCacheMs": 55,
      "speechTimings": {
        "firstTokenMs": 288,
        "decodeTokensPerSecond": 122.7,
        "totalMs": 563
      },
      "wordCount": 22,
      "helpers": {
        "sampleCount": 16000,
        "mean": 0.5,
        "corrupt": "AUDIO_DECODE_FAILED",
        "long": "AUDIO_TOO_LONG",
        "decodeAborted": "ABORTED",
        "autoSamples": 320,
        "manualSamples": 16000,
        "same": true,
        "manualSame": true,
        "cancelledCode": "ABORTED",
        "lateCode": "ABORTED",
        "lateTracksStopped": true,
        "denied": "MICROPHONE_DENIED",
        "stops": 8
      },
      "externalRequests": []
    }
  ],
  "defaultBrowserAcquisition": {
    "browser": "156.0.8078.4",
    "modelUrl": "https://huggingface.co/Cactus-Compute/whistle/resolve/b358ddadd89b7a713b5aa131f23032d3cca1b251/whistle.cact",
    "externalOrigins": ["https://huggingface.co"],
    "coldMs": 954,
    "serviceMs": 545.3999998569489
  },
  "abi": {
    "numberModelLength": "TypeError",
    "loadStatus": 0,
    "models": 2,
    "overflowStatus": 27,
    "overflowNulIndex": 31,
    "unloadedStatus": -1,
    "unloadedError": "no speech model loaded; pass a Whistle .cact to needle_load",
    "heapBytes": [
      76808192, 76808192, 76808192, 76808192, 76808192, 76808192, 76808192, 76808192, 76808192,
      76808192
    ],
    "modelLifetime": "retained until worker exit; ownership not documented by upstream"
  },
  "linux": [
    {
      "platform": "linux",
      "arch": "arm64",
      "node": "v22.12.0",
      "packedInference": "passed",
      "repeatedCalls": 3,
      "cancellationRecovery": "passed"
    },
    {
      "platform": "linux",
      "arch": "arm64",
      "node": "v24.21.0",
      "packedInference": "passed",
      "repeatedCalls": 3,
      "cancellationRecovery": "passed"
    }
  ],
  "notExecuted": [
    "Windows",
    "Linux x64",
    "shipping Safari/Edge application",
    "mobile",
    "physical microphone",
    "German quality"
  ],
  "notes": "Single-machine local measurements, not an SLA. All three browser engines passed cache reuse, corruption replacement, denial fallback and real inference; the table retains representative measured runs. Linux containers used --network none."
}