{
  "format": 1,
  "purpose": "LTX-Video 2B First Look measured technical summary; research only",
  "gpu": {
    "provider": "Vast",
    "instanceId": 56612364,
    "region": "Belgium, BE",
    "model": "A40",
    "uuid": "GPU-aec2c93a-10de-7c87-b0f8-2f1b69e1a850",
    "hourlyQuoteUsd": 0.42222222222222217
  },
  "rental": {
    "intentAtUtc": "2026-10-18T20:15:04.084000+00:00",
    "instanceAbsentObservedByUtc": "2026-10-18T20:36:53+00:00",
    "elapsedUpperBoundSeconds": 1308.9159998893738,
    "estimatedQuoteCostUpperBoundUsd": 0.15351483949319814,
    "providerReconciledChargeUsd": null,
    "temporarySshKeyId": 1603604,
    "temporarySshKeyCleanup": "Vast HTTP 401: API key lacks api.ssh.key route access",
    "temporaryPrivateKey": "removed locally after GPU destruction"
  },
  "staging": {
    "sshReadySeconds": 85.7,
    "runtimeDownload": {
      "status": "verified",
      "bytes": 3996143615,
      "sha256": "bd1d304e2b9ee1721088cf9edb4b32f6ec3e09d4fa64c0de09ce6905b0e4aa36",
      "seconds": 156.9948037439026,
      "effectiveBytesPerSecond": 25453986.499570392
    },
    "firstModelPass": {
      "status": "failed",
      "errorType": "ValueError",
      "error": "model response differs: pixart/text_encoder/model-00001-of-00002.safetensors",
      "seconds": 202.19869447220117
    },
    "modelRetryDurationSeconds": null,
    "runtimeExtractionSeconds": 94.61135581880808,
    "sourceDownloadSeconds": null
  },
  "initialBatch": "Initial four cases failed at process startup because the restricted executor could not traverse a mode-700 experiment parent directory; no GPU inference or artifacts resulted. The corrected run was preserved separately.",
  "cases": [
    {
      "experimentId": "T1",
      "outcome": "completed",
      "requestedSeconds": 4,
      "actualSeconds": 4.05,
      "frames": 81,
      "outputBytes": 124239,
      "inferenceSeconds": 3.938172820955515,
      "loadingSeconds": 42.5302819525823,
      "encodingSeconds": 0.5064776497893035,
      "caseWallSeconds": 50.763977685943246,
      "sampledMaxVramMiB": 24355.0,
      "marginalEstimateUsd": 0.000552,
      "sha256": "b5f96dc1829d03dcd971933e4dde7e7003d375c4de97cf12f516879664428faf"
    },
    {
      "experimentId": "I1",
      "outcome": "completed",
      "requestedSeconds": 4,
      "actualSeconds": 4.05,
      "frames": 81,
      "outputBytes": 670286,
      "inferenceSeconds": 3.644012455828488,
      "loadingSeconds": null,
      "encodingSeconds": 0.7126467521302402,
      "caseWallSeconds": 5.545285550877452,
      "sampledMaxVramMiB": 24357.0,
      "marginalEstimateUsd": 0.000648,
      "sha256": "28d4253c8d8614e91a56c44a45564f46e61a9429bef86b8e236be0c8adf3862d"
    },
    {
      "experimentId": "T2",
      "outcome": "completed",
      "requestedSeconds": 12,
      "actualSeconds": 12.05,
      "frames": 241,
      "outputBytes": 253313,
      "inferenceSeconds": 9.993157896213233,
      "loadingSeconds": null,
      "encodingSeconds": 1.0948062231764197,
      "caseWallSeconds": 11.580936352722347,
      "sampledMaxVramMiB": 41223.0,
      "marginalEstimateUsd": 0.001357,
      "sha256": "e9ec37c661a093288fc8d0a9e4876ed30ca40c551ec3c15b0614dc5c4739ffae"
    },
    {
      "experimentId": "I2",
      "outcome": "completed",
      "requestedSeconds": 12,
      "actualSeconds": 12.05,
      "frames": 241,
      "outputBytes": 1888696,
      "inferenceSeconds": 10.48545211693272,
      "loadingSeconds": null,
      "encodingSeconds": 1.5531423003412783,
      "caseWallSeconds": 13.52969106612727,
      "sampledMaxVramMiB": 41223.0,
      "marginalEstimateUsd": 0.001583,
      "sha256": "000e93835c6bdd3a14c92f0e849d0afcc774443921e24638d7eb7c842d11800b"
    }
  ],
  "outputTotals": {
    "generatedSeconds": 32.2,
    "frames": 644,
    "estimatedQuoteCostUpperBoundPerGeneratedSecondUsd": 0.004767541599167644,
    "estimatedQuoteCostUpperBoundPerFrameUsd": 0.00023837707995838218,
    "costPerUsableSecondUsd": null
  },
  "telemetry": {
    "rawHostSampleLines": 1012,
    "sampleIntervalTargetSeconds": 1,
    "modelLoadSharedSeconds": 42.5302819525823,
    "notes": [
      "Case phase timings and allocator peak are child reported; case wall, per-case GPU samples and host samples are independent observations.",
      "Host RAM used and CPU utilization are host-wide, not attributed to the experiment.",
      "Usable output seconds and creative quality await human review."
    ]
  }
}