{
  "benchmark": "aimusicdetect-60-track-benchmark-2026-08",
  "publishedAt": "2026-08-09",
  "provider": "ACRCloud",
  "modelVersions": [
    "h2zt2l57"
  ],
  "protocol": {
    "independentTracks": 60,
    "composition": {
      "human": 20,
      "suno": 20,
      "udio": 20
    },
    "clipLengthSeconds": 30,
    "primaryEncoding": "MP3, 192 kbps, stereo, 44.1 kHz",
    "robustnessEncoding": "MP3, 128 kbps, mono, 44.1 kHz",
    "blindFilenames": true,
    "note": "Primary and robustness rows came from two dated provider runs. Robustness variants are not counted as independent tracks."
  },
  "summary": {
    "correct": 60,
    "accuracy": 1,
    "accuracyWilson95Lower": 0.9398,
    "humanFalsePositives": 0,
    "humanFalsePositiveRate": 0,
    "aiDetected": 40,
    "aiRecall": 1,
    "byGenerator": {
      "human": {
        "tracks": 20,
        "correct": 20,
        "accuracy": 1
      },
      "suno": {
        "tracks": 20,
        "correct": 20,
        "accuracy": 1
      },
      "udio": {
        "tracks": 20,
        "correct": 20,
        "accuracy": 1
      }
    },
    "medianLatencyMs": 7331,
    "p95LatencyMs": 16527,
    "robustnessVariants": 15,
    "robustnessFlips": 0,
    "robustnessFlipRate": 0
  },
  "limitations": [
    "This is an internal benchmark, not an independent audit.",
    "The human cohort is made from older public-domain/open-archive recordings and does not represent all modern production styles.",
    "The AI cohort covers only sampled Suno and Udio outputs; generators and detector models change over time.",
    "A perfect result on 60 selected tracks does not mean the detector is universally 100% accurate.",
    "Use detector output as one signal, never as sole proof of authorship or misconduct."
  ],
  "samples": [
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      "sampleId": "B001",
      "parentId": "B001",
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      "sha256": "2f7e03fd7c7b69783c73b5bd2147c52d2259b0e9f5ed4df496ef0094d096a5d6",
      "expected": "human",
      "verdict": "human",
      "aiProbability": 23,
      "likelySource": "Human",
      "modelVersion": "h2zt2l57",
      "latencyMs": 3185,
      "run": "primary-run"
    },
    {
      "sampleId": "B002",
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      "sha256": "05ac74a38b7f7c243247afa4e6730d675e2874d398c1274a99b4d57b45152212",
      "expected": "ai_generated",
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      "latencyMs": 1676,
      "run": "primary-run"
    },
    {
      "sampleId": "B003",
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    },
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    },
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    },
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    },
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    },
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