{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2025-0178",
 "modified": "2026-11-05T13:55:31.736Z",
 "published": "2026-11-05T13:29:03.470Z",
 "summary": "SmolVLM2-500M-Video-Instruct: structural change at edf555f (2025-02-16)",
 "details": "SmolVLM2-500M-Video-Instruct: layer count 32 declared (it was unset, so the library default for the class applied); derived parameters 185.3M to 332.9M only because our reconstruction stops falling back to its own default; whether the loaded model changed depends on the library default, which this record does not check (2025-02-16).\n\nRepository: https://huggingface.co/HuggingFaceTB/SmolVLM2-500M-Video-Instruct. Revisions from edf555f29eae22c41c8cb9f7c215974f1f5f6d74 onward carry this change; a pin at 2fb535e21a501c02006bb0d0710ec31368c10e34 or earlier does not.\n\nChanged keys:\n- num_hidden_layers: unset -> 32 (structural)\n\nThis record says what the change does mechanically. It is not a report that anything broke for anyone.",
 "affected": [
  {
   "ranges": [
    {
     "type": "GIT",
     "repo": "https://huggingface.co/HuggingFaceTB/SmolVLM2-500M-Video-Instruct",
     "events": [
      {
       "introduced": "edf555f29eae22c41c8cb9f7c215974f1f5f6d74"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "HuggingFaceTB/SmolVLM2-500M-Video-Instruct",
    "previous_revision": "2fb535e21a501c02006bb0d0710ec31368c10e34"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/HuggingFaceTB/SmolVLM2-500M-Video-Instruct/commit/edf555f29eae22c41c8cb9f7c215974f1f5f6d74"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/HuggingFaceTB/SmolVLM2-500M-Video-Instruct"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/HuggingFaceTB/SmolVLM2-500M-Video-Instruct.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "HuggingFaceTB/SmolVLM2-500M-Video-Instruct",
  "kind": "structural",
  "classes": [
   "structural"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "num_hidden_layers",
    "before": null,
    "after": 32,
    "class": "structural"
   }
  ],
  "impact": {
   "memory": true,
   "serving": false,
   "tokenizer": false,
   "licence": null
  },
  "breaking": true,
  "breaking_rule": "https://www.neurarch.com/changes-feeds/advisories/index.json#breaking_rule",
  "consequence": {
   "params": {
    "before": 185322752,
    "after": 332887552
   },
   "weightsGbBf16": {
    "before": 0.371,
    "after": 0.666
   },
   "trainPeakGb": {
    "before": 62.603,
    "after": 115.737
   },
   "fingerprint": {
    "before": "bfb3d6f3",
    "after": "8550b98c"
   },
   "context": null,
   "eos": null,
   "bos": null,
   "generationEos": 49279
  },
  "commit_date": "2025-02-16T19:04:30.000Z",
  "detected_at": "2026-11-05T13:29:03.470Z",
  "detected_by": "backfill",
  "days_since_first_commit": 5,
  "license": "CC-BY-4.0"
 }
}