{
  "meta": {
    "title": "StreamAV-Bench Leaderboard",
    "tagline": "Streaming systems, evaluated while they run.",
    "description": "Official metric-wise results for streaming audio-video generation across progressive and interactive evaluation tracks.",
    "systemCount": 13,
    "metricCount": 32,
    "scenarioCount": 320,
    "durationSeconds": 180,
    "publishedPrecision": 3,
    "links": {
      "project": "https://liukqchoco.github.io/StreamAVBench/",
      "code": "https://github.com/liukqchoco/StreamAVBench-Code",
      "paper": "",
      "dataset": ""
    }
  },
  "tracks": [
    {
      "id": "shared",
      "label": "Shared",
      "count": 9,
      "description": "Quality, alignment, continuity, and efficiency metrics applied across both tracks."
    },
    {
      "id": "progressive",
      "label": "Progressive",
      "count": 12,
      "description": "Instruction adherence and long-horizon stability under one global prompt."
    },
    {
      "id": "interactive",
      "label": "Interactive",
      "count": 11,
      "description": "Runtime-update response, state retention, and reuse under prompt updates."
    },
    {
      "id": "diagnostics",
      "label": "Diagnostics",
      "count": 4,
      "description": "Success- and coverage-adjusted diagnostics that jointly account for update success and source-state coverage."
    }
  ],
  "categories": [
    {
      "id": "quality",
      "track": "shared",
      "label": "Quality & Alignment",
      "shortLabel": "Quality",
      "description": "Perceptual quality and semantic or temporal correspondence between audio and video.",
      "defaultMetric": "va",
      "metrics": ["va", "vq", "pq", "aq", "avalign", "avsync"]
    },
    {
      "id": "streaming",
      "track": "shared",
      "label": "Continuity & Efficiency",
      "shortLabel": "Streaming",
      "description": "Technical continuity at native generation boundaries, throughput, and startup latency.",
      "defaultMetric": "nbc",
      "metrics": ["nbc", "fps", "ttfc"]
    },
    {
      "id": "adherence",
      "track": "progressive",
      "label": "Instruction Adherence",
      "shortLabel": "Adherence",
      "description": "Full-rollout fulfillment and endpoint drift for fixed visual and audio requirements.",
      "defaultMetric": "vif",
      "metrics": ["vif", "aif", "vid", "aid"]
    },
    {
      "id": "stability",
      "track": "progressive",
      "label": "Long-Horizon Stability",
      "shortLabel": "Stability",
      "description": "Quality drift, visual consistency, and audio-video drift over the 180-second rollout.",
      "defaultMetric": "va_d",
      "metrics": ["va_d", "vq_d", "pq_d", "aq_d", "sc", "bc", "avalign_d", "avsync_d"]
    },
    {
      "id": "response",
      "track": "interactive",
      "label": "Interactive Response",
      "shortLabel": "Response",
      "description": "Update fulfillment, transition continuity, achievement rate, and successful-response latency.",
      "defaultMetric": "vuf",
      "metrics": ["vuf", "auf", "pvc", "pac", "pvuar", "pauar", "pvrl", "parl"]
    },
    {
      "id": "state",
      "track": "interactive",
      "label": "State Retention & Reuse",
      "shortLabel": "State",
      "description": "Preservation of untargeted states and correct reuse of information established earlier.",
      "defaultMetric": "vsr",
      "metrics": ["vsr", "asr", "hdf"]
    },
    {
      "id": "adjusted",
      "track": "diagnostics",
      "label": "Success & Coverage Adjustments",
      "shortLabel": "Adjusted",
      "description": "Adjusted diagnostics that penalize unachieved updates and unestablished dependency sources; these are reported separately from the 32 core metrics.",
      "defaultMetric": "sa_pvrl",
      "metrics": ["sa_pvrl", "sa_parl", "ca_hdf_a", "ca_hdf_l"]
    }
  ],
  "metrics": {
    "va": {
      "abbr": "VA",
      "name": "Visual Aesthetics",
      "direction": "higher",
      "range": "[0, 1]",
      "unit": "",
      "evaluator": "LAION Aesthetic Predictor",
      "description": "Perceptual visual appeal, averaged over six 30-second intervals."
    },
    "vq": {
      "abbr": "VQ",
      "name": "Visual Quality",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Visual fidelity, subject integrity, motion naturalness, and artifact control."
    },
    "pq": {
      "abbr": "PQ",
      "name": "Production Quality",
      "direction": "higher",
      "range": "Original evaluator scale",
      "unit": "",
      "evaluator": "Audiobox Aesthetics",
      "description": "Perceptual and production fidelity of the generated audio."
    },
    "aq": {
      "abbr": "AQ",
      "name": "Audio Quality",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Audio naturalness and artifact control."
    },
    "avalign": {
      "abbr": "AVAlign",
      "name": "Audio-Video Alignment",
      "direction": "higher",
      "range": "Cosine similarity",
      "unit": "",
      "evaluator": "ImageBind",
      "description": "Semantic correspondence between generated audio and visual content."
    },
    "avsync": {
      "abbr": "AVSync",
      "name": "Audio-Video Synchronization",
      "direction": "lower",
      "range": "≥ 0",
      "unit": "s",
      "evaluator": "Synchformer",
      "description": "Absolute predicted temporal offset between audio and video."
    },
    "nbc": {
      "abbr": "NBC",
      "name": "Native Boundary Continuity",
      "direction": "higher",
      "range": "[0, 100]",
      "unit": "",
      "evaluator": "Deterministic artifact detector",
      "description": "Continuity at model-native generation-unit boundaries, accounting for black frames, repetition, freezing, and flashes."
    },
    "fps": {
      "abbr": "FPS",
      "name": "Frames per Second",
      "direction": "higher",
      "range": "≥ 0",
      "unit": "fps",
      "evaluator": "Runtime measurement",
      "description": "Generated video frames per unit generation time under the default recommended configuration."
    },
    "ttfc": {
      "abbr": "TTFC",
      "name": "Time to First Chunk",
      "direction": "lower",
      "range": "≥ 0",
      "unit": "s",
      "evaluator": "Runtime measurement",
      "description": "Elapsed time from receiving a generation request to producing the first output chunk."
    },
    "vif": {
      "abbr": "VIF",
      "name": "Video Instruction Fulfillment",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + case checklist",
      "description": "Completeness of visual requirements over the full progressive output."
    },
    "aif": {
      "abbr": "AIF",
      "name": "Audio Instruction Fulfillment",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + case checklist",
      "description": "Completeness of audio requirements over the full progressive output."
    },
    "vid": {
      "abbr": "VID",
      "name": "Video Instruction Drift",
      "direction": "lower",
      "range": "[0, 4]",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + case checklist",
      "description": "Absolute change in visual instruction adherence between the first and last intervals."
    },
    "aid": {
      "abbr": "AID",
      "name": "Audio Instruction Drift",
      "direction": "lower",
      "range": "[0, 4]",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + case checklist",
      "description": "Absolute change in audio instruction adherence between the first and last intervals."
    },
    "va_d": {
      "abbr": "VA-D",
      "name": "Visual Aesthetics Drift",
      "direction": "lower",
      "range": "VA units",
      "unit": "",
      "evaluator": "LAION Aesthetic Predictor",
      "description": "Absolute change in visual aesthetics between the first and last intervals."
    },
    "vq_d": {
      "abbr": "VQ-D",
      "name": "Visual Quality Drift",
      "direction": "lower",
      "range": "VQ units",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Absolute change in visual quality between the first and last intervals."
    },
    "pq_d": {
      "abbr": "PQ-D",
      "name": "Production Quality Drift",
      "direction": "lower",
      "range": "PQ units",
      "unit": "",
      "evaluator": "Audiobox Aesthetics",
      "description": "Absolute change in production quality between the first and last intervals."
    },
    "aq_d": {
      "abbr": "AQ-D",
      "name": "Audio Quality Drift",
      "direction": "lower",
      "range": "AQ units",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Absolute change in audio quality between the first and last intervals."
    },
    "sc": {
      "abbr": "SC",
      "name": "Subject Consistency",
      "direction": "higher",
      "range": "Original evaluator scale",
      "unit": "",
      "evaluator": "VBench-Long protocol",
      "description": "Temporal consistency of subject appearance over the generated sequence."
    },
    "bc": {
      "abbr": "BC",
      "name": "Background Consistency",
      "direction": "higher",
      "range": "Original evaluator scale",
      "unit": "",
      "evaluator": "VBench-Long protocol",
      "description": "Temporal consistency of background scenes over the generated sequence."
    },
    "avalign_d": {
      "abbr": "AVAlign-D",
      "name": "Audio-Video Alignment Drift",
      "direction": "lower",
      "range": "AVAlign units",
      "unit": "",
      "evaluator": "ImageBind",
      "description": "Absolute change in audio-video semantic correspondence between the first and last intervals."
    },
    "avsync_d": {
      "abbr": "AVSync-D",
      "name": "Audio-Video Synchronization Drift",
      "direction": "lower",
      "range": "AVSync units",
      "unit": "s",
      "evaluator": "Synchformer",
      "description": "Absolute change in audio-video synchronization offset between the first and last intervals."
    },
    "vuf": {
      "abbr": "VUF",
      "name": "Video Update Fulfillment",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + update checklist",
      "description": "Completeness of each runtime update's visual targets."
    },
    "auf": {
      "abbr": "AUF",
      "name": "Audio Update Fulfillment",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + update checklist",
      "description": "Completeness of each runtime update's audio targets."
    },
    "pvc": {
      "abbr": "PVC",
      "name": "Prompt-Based Visual Continuity",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Boundary detector + Gemini 3.1 Pro",
      "description": "Visual continuity across prompt-update boundaries while allowing requested changes."
    },
    "pac": {
      "abbr": "PAC",
      "name": "Prompt-Based Audio Continuity",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Audio continuity across prompt-update boundaries while allowing requested changes."
    },
    "pvuar": {
      "abbr": "PVUAR",
      "name": "Prompt-Based Visual Update Achievement Rate",
      "direction": "higher",
      "range": "[0, 1]",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + update checklist",
      "description": "Fraction of applicable visual updates whose core target is clearly realized."
    },
    "pauar": {
      "abbr": "PAUAR",
      "name": "Prompt-Based Audio Update Achievement Rate",
      "direction": "higher",
      "range": "[0, 1]",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro + update checklist",
      "description": "Fraction of applicable audio updates whose core target is clearly realized."
    },
    "pvrl": {
      "abbr": "PVRL",
      "name": "Prompt-Based Visual Response Latency",
      "direction": "lower",
      "range": "Media time",
      "unit": "s",
      "evaluator": "Media-time measurement",
      "description": "Conditional latency to the first clear realization of an achieved visual target."
    },
    "parl": {
      "abbr": "PARL",
      "name": "Prompt-Based Audio Response Latency",
      "direction": "lower",
      "range": "Media time",
      "unit": "s",
      "evaluator": "Media-time measurement",
      "description": "Conditional latency to the first clear realization of an achieved audio target."
    },
    "vsr": {
      "abbr": "VSR",
      "name": "Visual State Retention",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Preservation of subject appearance and environment after accounting for requested changes."
    },
    "asr": {
      "abbr": "ASR",
      "name": "Audio State Retention",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Preservation of recurring music, ambience, and persistent sounds not targeted by an update."
    },
    "hdf": {
      "abbr": "HDF",
      "name": "History-Dependency Following",
      "direction": "higher",
      "range": "1–5",
      "unit": "",
      "evaluator": "Gemini 3.1 Pro",
      "description": "Correct execution of updates using relevant earlier states, evaluated only when the required source state was established."
    },
    "sa_pvrl": {
      "abbr": "SA-PVRL",
      "name": "Success-Adjusted Visual Response Latency",
      "direction": "lower",
      "range": "[0, 30]",
      "unit": "s",
      "evaluator": "Achievement-adjusted media-time measurement",
      "description": "Visual response latency with the 30-second observation-window cap assigned to every unachieved target."
    },
    "sa_parl": {
      "abbr": "SA-PARL",
      "name": "Success-Adjusted Audio Response Latency",
      "direction": "lower",
      "range": "[0, 30]",
      "unit": "s",
      "evaluator": "Achievement-adjusted media-time measurement",
      "description": "Audio response latency with the 30-second observation-window cap assigned to every unachieved target."
    },
    "ca_hdf_a": {
      "abbr": "CA-HDF-A",
      "name": "Coverage-Adjusted Adjacent HDF",
      "direction": "higher",
      "range": "[0, 1]",
      "unit": "",
      "evaluator": "Source establishment + normalized conditional HDF",
      "description": "Adjacent-dependency quality normalized to [0,1], with unestablished source states assigned zero."
    },
    "ca_hdf_l": {
      "abbr": "CA-HDF-L",
      "name": "Coverage-Adjusted Long-Range HDF",
      "direction": "higher",
      "range": "[0, 1]",
      "unit": "",
      "evaluator": "Source establishment + normalized conditional HDF",
      "description": "Long-range dependency quality normalized to [0,1], with unestablished source states assigned zero."
    }
  },
  "models": [
    {
      "name": "PixVerse R1",
      "paradigm": "Native joint",
      "access": "Web",
      "reference": "https://pixverse.ai/en/blog/pixverse-launches-r1-real-time-world-model",
      "scores": {
        "va": 0.529, "vq": 2.428, "pq": 6.348, "aq": 2.810, "avalign": 0.234, "avsync": 0.855,
        "nbc": null, "fps": null, "ttfc": null,
        "vif": 2.976, "aif": 2.511, "vid": 0.484, "aid": 0.425,
        "va_d": 0.032, "vq_d": 0.253, "pq_d": 0.421, "aq_d": 0.626, "sc": 0.907, "bc": 0.930, "avalign_d": 0.065, "avsync_d": 0.579,
        "vuf": 2.573, "auf": 2.895, "pvc": 4.278, "pac": 2.544, "pvuar": 0.350, "pauar": 0.466, "pvrl": 12.992, "parl": 10.352,
        "vsr": 2.430, "asr": 4.108, "hdf": 2.461,
        "sa_pvrl": 24.011, "sa_parl": 20.855, "ca_hdf_a": 0.232, "ca_hdf_l": 0.234
      }
    },
    {
      "name": "HappyOyster",
      "paradigm": "Native joint",
      "access": "Web",
      "reference": "https://www.alizila.com/alibaba-launches-happyoyster-a-world-model-product-for-real-time-immersive-creation-and-interaction/",
      "scores": {
        "va": 0.529, "vq": 2.785, "pq": 6.817, "aq": 3.157, "avalign": 0.206, "avsync": 1.044,
        "nbc": null, "fps": null, "ttfc": null,
        "vif": 3.565, "aif": 2.692, "vid": 0.510, "aid": 0.508,
        "va_d": 0.032, "vq_d": 0.417, "pq_d": 0.623, "aq_d": 0.411, "sc": 0.904, "bc": 0.934, "avalign_d": 0.077, "avsync_d": 0.534,
        "vuf": 2.975, "auf": 2.879, "pvc": 3.744, "pac": 3.509, "pvuar": 0.518, "pauar": 0.488, "pvrl": 14.484, "parl": 13.621,
        "vsr": 2.799, "asr": 3.772, "hdf": 2.817,
        "sa_pvrl": 21.991, "sa_parl": 21.861, "ca_hdf_a": 0.354, "ca_hdf_l": 0.306
      }
    },
    {
      "name": "OmniForcing",
      "paradigm": "Native joint",
      "access": "Open",
      "reference": "https://arxiv.org/abs/2603.11647",
      "scores": {
        "va": 0.554, "vq": 2.374, "pq": 6.351, "aq": 2.528, "avalign": 0.119, "avsync": 1.423,
        "nbc": 98.808, "fps": 12.799, "ttfc": 3.998,
        "vif": 2.423, "aif": 2.343, "vid": 0.572, "aid": 0.277,
        "va_d": 0.083, "vq_d": 0.273, "pq_d": 0.429, "aq_d": 0.506, "sc": 0.962, "bc": 0.953, "avalign_d": 0.081, "avsync_d": 0.479,
        "vuf": 1.848, "auf": 2.242, "pvc": 4.161, "pac": 3.369, "pvuar": 0.053, "pauar": 0.316, "pvrl": 13.295, "parl": 7.925,
        "vsr": 2.624, "asr": 3.388, "hdf": 2.487,
        "sa_pvrl": 29.128, "sa_parl": 23.046, "ca_hdf_a": 0.136, "ca_hdf_l": 0.109
      }
    },
    {
      "name": "Odyssey-2",
      "paradigm": "Cascaded",
      "access": "Web",
      "reference": "https://odyssey.ml/introducing-odyssey-2",
      "scores": {
        "va": 0.531, "vq": 2.820, "pq": 6.426, "aq": 2.659, "avalign": 0.260, "avsync": 0.946,
        "nbc": null, "fps": null, "ttfc": null,
        "vif": 3.106, "aif": 2.778, "vid": 0.500, "aid": 0.566,
        "va_d": 0.040, "vq_d": 0.463, "pq_d": 0.362, "aq_d": 0.456, "sc": 0.976, "bc": 0.966, "avalign_d": 0.064, "avsync_d": 0.548,
        "vuf": 2.408, "auf": 2.244, "pvc": 3.919, "pac": 1.749, "pvuar": 0.274, "pauar": 0.308, "pvrl": 18.758, "parl": 15.733,
        "vsr": 2.836, "asr": 2.707, "hdf": 2.554,
        "sa_pvrl": 26.838, "sa_parl": 25.611, "ca_hdf_a": 0.196, "ca_hdf_l": 0.168
      }
    },
    {
      "name": "Self-Forcing",
      "paradigm": "Cascaded",
      "access": "Open",
      "reference": "https://arxiv.org/abs/2506.08009",
      "scores": {
        "va": 0.585, "vq": 2.753, "pq": 6.453, "aq": 2.623, "avalign": 0.256, "avsync": 0.919,
        "nbc": 94.359, "fps": 15.628, "ttfc": 1.278,
        "vif": 3.019, "aif": 2.810, "vid": 0.373, "aid": 0.457,
        "va_d": 0.025, "vq_d": 0.323, "pq_d": 0.341, "aq_d": 0.488, "sc": 0.981, "bc": 0.969, "avalign_d": 0.054, "avsync_d": 0.476,
        "vuf": 2.237, "auf": 2.339, "pvc": 3.912, "pac": 1.784, "pvuar": 0.185, "pauar": 0.334, "pvrl": 14.164, "parl": 12.369,
        "vsr": 2.851, "asr": 2.813, "hdf": 2.348,
        "sa_pvrl": 27.081, "sa_parl": 24.156, "ca_hdf_a": 0.206, "ca_hdf_l": 0.169
      }
    },
    {
      "name": "LongLive",
      "paradigm": "Cascaded",
      "access": "Open",
      "reference": "https://arxiv.org/abs/2509.22622",
      "scores": {
        "va": 0.605, "vq": 2.768, "pq": 6.459, "aq": 2.696, "avalign": 0.272, "avsync": 0.969,
        "nbc": 85.418, "fps": 10.125, "ttfc": 1.381,
        "vif": 3.164, "aif": 2.814, "vid": 0.317, "aid": 0.581,
        "va_d": 0.023, "vq_d": 0.367, "pq_d": 0.280, "aq_d": 0.475, "sc": 0.986, "bc": 0.973, "avalign_d": 0.052, "avsync_d": 0.476,
        "vuf": 2.341, "auf": 2.138, "pvc": 3.631, "pac": 1.809, "pvuar": 0.241, "pauar": 0.266, "pvrl": 11.792, "parl": 13.078,
        "vsr": 2.724, "asr": 2.712, "hdf": 2.212,
        "sa_pvrl": 25.575, "sa_parl": 25.490, "ca_hdf_a": 0.186, "ca_hdf_l": 0.187
      }
    },
    {
      "name": "Rolling-Forcing",
      "paradigm": "Cascaded",
      "access": "Open",
      "reference": "https://arxiv.org/abs/2509.25161",
      "scores": {
        "va": 0.572, "vq": 2.757, "pq": 6.393, "aq": 2.673, "avalign": 0.265, "avsync": 1.078,
        "nbc": 96.657, "fps": 10.603, "ttfc": 2.962,
        "vif": 3.009, "aif": 2.858, "vid": 0.425, "aid": 0.474,
        "va_d": 0.043, "vq_d": 0.427, "pq_d": 0.329, "aq_d": 0.425, "sc": 0.980, "bc": 0.966, "avalign_d": 0.064, "avsync_d": 0.506,
        "vuf": 2.315, "auf": 2.221, "pvc": 4.086, "pac": 1.800, "pvuar": 0.217, "pauar": 0.298, "pvrl": 13.234, "parl": 12.820,
        "vsr": 2.542, "asr": 2.597, "hdf": 2.502,
        "sa_pvrl": 26.355, "sa_parl": 24.941, "ca_hdf_a": 0.250, "ca_hdf_l": 0.155
      }
    },
    {
      "name": "Deep Forcing",
      "paradigm": "Cascaded",
      "access": "Open",
      "reference": "https://arxiv.org/abs/2512.05081",
      "scores": {
        "va": 0.597, "vq": 2.632, "pq": 6.523, "aq": 2.668, "avalign": 0.280, "avsync": 0.878,
        "nbc": 92.482, "fps": 11.065, "ttfc": 1.397,
        "vif": 3.041, "aif": 2.629, "vid": 0.359, "aid": 0.545,
        "va_d": 0.023, "vq_d": 0.334, "pq_d": 0.289, "aq_d": 0.497, "sc": 0.979, "bc": 0.967, "avalign_d": 0.062, "avsync_d": 0.553,
        "vuf": 2.295, "auf": 2.146, "pvc": 3.879, "pac": 1.770, "pvuar": 0.220, "pauar": 0.288, "pvrl": 13.433, "parl": 12.650,
        "vsr": 2.449, "asr": 2.601, "hdf": 2.206,
        "sa_pvrl": 26.420, "sa_parl": 25.024, "ca_hdf_a": 0.181, "ca_hdf_l": 0.150
      }
    },
    {
      "name": "MemFlow",
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}