{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2026-0007",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "granite-vision-4.1-4b: structural change at 37d591f (2026-07-13)",
 "details": "granite-vision-4.1-4b: vocab_size changed from 100353 to 100352; the embedding and output head change shape, so adapters and merges made against the old vocabulary no longer load cleanly; derived parameters 3.32B to 3.32B (-2.6K, -0.00 GB of bf16 weights) (2026-07-13).\n\nRepository: https://huggingface.co/ibm-granite/granite-vision-4.1-4b. Revisions from 37d591f06319e8f1638b5adcf58bdf50e0f84f7a onward carry this change; a pin at 6eada830c190d274873a8d7ab65a5914fe154b20 or earlier does not.\n\nChanged keys:\n- vocab_size: 100353 -> 100352 (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/ibm-granite/granite-vision-4.1-4b",
     "events": [
      {
       "introduced": "37d591f06319e8f1638b5adcf58bdf50e0f84f7a"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "ibm-granite/granite-vision-4.1-4b",
    "previous_revision": "6eada830c190d274873a8d7ab65a5914fe154b20"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/ibm-granite/granite-vision-4.1-4b/commit/37d591f06319e8f1638b5adcf58bdf50e0f84f7a"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/ibm-granite/granite-vision-4.1-4b"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/ibm-granite/granite-vision-4.1-4b.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "ibm-granite/granite-vision-4.1-4b",
  "kind": "structural",
  "classes": [
   "structural"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "vocab_size",
    "before": 100353,
    "after": 100352,
    "class": "structural"
   }
  ],
  "impact": {
   "memory": true,
   "serving": true,
   "tokenizer": false,
   "licence": null
  },
  "breaking": true,
  "breaking_rule": "https://www.neurarch.com/changes-feeds/advisories/index.json#breaking_rule",
  "consequence": {
   "params": {
    "before": 3319790080,
    "after": 3319787520
   },
   "weightsGbBf16": {
    "before": 6.64,
    "after": 6.64
   },
   "trainPeakGb": {
    "before": 263.386,
    "after": 263.386
   },
   "fingerprint": null,
   "context": null,
   "eos": null,
   "bos": null
  },
  "commit_date": "2026-07-13T15:35:23.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 88,
  "license": "CC-BY-4.0"
 }
}