{
  "image": "docs/assets/img/samples/elephant_sample_image.jpg",
  "requested_models": [
    "dinov2-vit-l14",
    "ijepa-vit-h14",
    "vjepa2-vitl-img16-256",
    "eupe-vit-b16"
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          "key": "cls_cosine_sim",
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          "key": "mean_patch_correspondence",
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          "key": "cls_cosine_sim",
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          "key": "cls_cosine_sim",
          "label": "CLS cosine similarity",
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        {
          "key": "mean_patch_correspondence",
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          "key": "cls_cosine_sim",
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        {
          "key": "mean_patch_correspondence",
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          "reason": "Unavailable because embedding dimensions differ (1280 vs 1024)."
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    {
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          "key": "cls_cosine_sim",
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        {
          "key": "mean_patch_correspondence",
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        "label": "Highest effective rank",
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      {
        "label": "Highest patch entropy",
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      {
        "label": "Most top-heavy variance",
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        "label": "Strongest CKA alignment",
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      {
        "label": "Weakest CKA alignment",
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        "model_b": "eupe-vit-b16",
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      {
        "label": "Highest neighborhood overlap",
        "model_a": "dinov2-vit-l14",
        "model_b": "vjepa2-vitl-img16-256",
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      {
        "label": "Strongest patch correspondence",
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      "unavailable_reasons": [
        {
          "reason": "Unavailable because only one model exposes a CLS token.",
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        {
          "reason": "Unavailable because CLS dimensions differ (1024 vs 768).",
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        {
          "reason": "Unavailable because neither model exposes a CLS token.",
          "count": 1
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    "knn_overlap_matrix": {
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        {
          "reason": "Unavailable because embedding dimensions differ (1024 vs 768).",
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        {
          "reason": "Unavailable because embedding dimensions differ (1024 vs 1280).",
          "count": 1
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        {
          "reason": "Unavailable because embedding dimensions differ (1280 vs 1024).",
          "count": 1
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        "summary": "Validation ran against live ONNX Runtime execution."
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        "status": "validated",
        "summary": "Approved preprocessing evidence matches the current registry contract."
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          "summary": "Approved tensor semantics evidence matches the current registry contract."
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        "summary": "Approved reference parity evidence matches the current registry contract.",
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        "fixture_set": "standard",
        "checked_signals": 0,
        "drifted_signals": 0
      },
      "caveats": [],
      "recommendation": "Safe to interpret as source-aligned for supported report features."
    },
    {
      "model": "ijepa-vit-h14",
      "status": "validated",
      "evidence_timestamp": "2026-03-27T12:00:00Z",
      "backend": {
        "kind": "onnx-runtime",
        "status": "validated",
        "summary": "Validation ran against live ONNX Runtime execution."
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      "preprocess": {
        "status": "validated",
        "summary": "Approved preprocessing evidence matches the current registry contract."
      },
      "tensors": [
        {
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          "status": "validated",
          "summary": "Approved tensor semantics evidence matches the current registry contract."
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      ],
      "parity": {
        "status": "validated",
        "summary": "Approved reference parity evidence matches the current registry contract.",
        "artifact_id": "ijepa-vit-h14:standard:2026-03-27T12:00:00Z",
        "fixture_set": "standard",
        "checked_signals": 0,
        "drifted_signals": 0
      },
      "caveats": [],
      "recommendation": "Safe to interpret as source-aligned for supported report features."
    },
    {
      "model": "vjepa2-vitl-img16-256",
      "status": "validated",
      "evidence_timestamp": "2026-03-27T12:00:00Z",
      "backend": {
        "kind": "onnx-runtime",
        "status": "validated",
        "summary": "Validation ran against live ONNX Runtime execution."
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      "preprocess": {
        "status": "validated",
        "summary": "Approved preprocessing evidence matches the current registry contract."
      },
      "tensors": [
        {
          "name": "last_hidden_state",
          "role": "patch sequence",
          "status": "validated",
          "summary": "Approved tensor semantics evidence matches the current registry contract."
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      ],
      "parity": {
        "status": "validated",
        "summary": "Approved reference parity evidence matches the current registry contract.",
        "artifact_id": "vjepa2-vitl-img16-256:standard:2026-03-27T12:00:00Z",
        "fixture_set": "standard",
        "checked_signals": 0,
        "drifted_signals": 0
      },
      "caveats": [],
      "recommendation": "Safe to interpret as source-aligned for supported report features."
    },
    {
      "model": "eupe-vit-b16",
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      "evidence_timestamp": "2026-03-27T12:00:00Z",
      "backend": {
        "kind": "onnx-runtime",
        "status": "validated",
        "summary": "Validation ran against live ONNX Runtime execution."
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      "preprocess": {
        "status": "validated",
        "summary": "Approved preprocessing evidence matches the current registry contract."
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      "tensors": [
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          "role": "patch+cls sequence",
          "status": "validated",
          "summary": "Approved tensor semantics evidence matches the current registry contract."
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      ],
      "parity": {
        "status": "validated",
        "summary": "Approved reference parity evidence matches the current registry contract.",
        "artifact_id": "eupe-vit-b16:standard:2026-03-27T12:00:00Z",
        "fixture_set": "standard",
        "checked_signals": 0,
        "drifted_signals": 0
      },
      "caveats": [],
      "recommendation": "Safe to interpret as source-aligned for supported report features."
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  ]
}