{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2025-0031",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "jina-embeddings-v4: structural change at 998398d (2025-05-16)",
 "details": "jina-embeddings-v4: derived parameters 3.09B to 2.80B (-288.3M, -0.58 GB of bf16 weights); architectures [\"ColQwen25Duo\"] to [\"JinaEmbeddingsV4Model\"]; a different class is instantiated from the same id (2025-05-16).\n\nRepository: https://huggingface.co/jinaai/jina-embeddings-v4. Revisions from 998398d6554c4832d09be1d217794261ac0d5638 onward carry this change; a pin at e3cd201ac75f0648df0b65b89ee97ae5faafc1d0 or earlier does not.\n\nChanged keys:\n- architectures: [\"ColQwen25Duo\"] -> [\"JinaEmbeddingsV4Model\"] (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/jinaai/jina-embeddings-v4",
     "events": [
      {
       "introduced": "998398d6554c4832d09be1d217794261ac0d5638"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "jinaai/jina-embeddings-v4",
    "previous_revision": "e3cd201ac75f0648df0b65b89ee97ae5faafc1d0"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/jinaai/jina-embeddings-v4/commit/998398d6554c4832d09be1d217794261ac0d5638"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/jinaai/jina-embeddings-v4"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/jinaai/jina-embeddings-v4.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "jinaai/jina-embeddings-v4",
  "kind": "structural",
  "classes": [
   "structural"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "architectures",
    "before": [
     "ColQwen25Duo"
    ],
    "after": [
     "JinaEmbeddingsV4Model"
    ],
    "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": 3089704448,
    "after": 2801396736
   },
   "weightsGbBf16": {
    "before": 6.179,
    "after": 5.603
   },
   "trainPeakGb": {
    "before": 348.967,
    "after": 253.987
   },
   "fingerprint": {
    "before": "2db78954",
    "after": "be837245"
   },
   "context": null,
   "eos": null,
   "bos": null
  },
  "commit_date": "2025-05-16T11:58:33.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 8,
  "license": "CC-BY-4.0"
 }
}