{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2025-0021",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "Giga-Embeddings-instruct: structural change at 3c12a84 (2025-09-23)",
 "details": "Giga-Embeddings-instruct: model_type \"gigar\" to \"gigarembed\"; a different class is instantiated from the same id; declared dtype \"bfloat16\" to \"float32\"; tokenizer_class \"PreTrainedTokenizerFast\" to \"PreTrainedTokenizer\" (2025-09-23).\n\nRepository: https://huggingface.co/ai-sage/Giga-Embeddings-instruct. Revisions from 3c12a846f3f964c38cfa04b3f9e95e4f187c97c8 onward carry this change; a pin at b3dc287fece8fcb002a9bc02138818b6fdc0b9b8 or earlier does not.\n\nChanged keys:\n- dtype: bfloat16 -> float32 (structural)\n- model_type: gigar -> gigarembed (structural)\n- tokenizer tokenizer_class: PreTrainedTokenizerFast -> PreTrainedTokenizer (tokenizer)\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/ai-sage/Giga-Embeddings-instruct",
     "events": [
      {
       "introduced": "3c12a846f3f964c38cfa04b3f9e95e4f187c97c8"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "ai-sage/Giga-Embeddings-instruct",
    "previous_revision": "b3dc287fece8fcb002a9bc02138818b6fdc0b9b8"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/ai-sage/Giga-Embeddings-instruct/commit/3c12a846f3f964c38cfa04b3f9e95e4f187c97c8"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/ai-sage/Giga-Embeddings-instruct"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/ai-sage/Giga-Embeddings-instruct.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "ai-sage/Giga-Embeddings-instruct",
  "kind": "structural",
  "classes": [
   "structural",
   "tokenizer"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "dtype",
    "before": "bfloat16",
    "after": "float32",
    "class": "structural"
   },
   {
    "file": "config",
    "key": "model_type",
    "before": "gigar",
    "after": "gigarembed",
    "class": "structural"
   },
   {
    "file": "tokenizer",
    "key": "tokenizer_class",
    "before": "PreTrainedTokenizerFast",
    "after": "PreTrainedTokenizer",
    "class": "tokenizer"
   }
  ],
  "impact": {
   "memory": true,
   "serving": true,
   "tokenizer": true,
   "licence": null
  },
  "breaking": true,
  "breaking_rule": "https://www.neurarch.com/changes-feeds/advisories/index.json#breaking_rule",
  "consequence": {
   "params": null,
   "weightsGbBf16": null,
   "trainPeakGb": null,
   "fingerprint": null,
   "context": null,
   "eos": null,
   "bos": null
  },
  "commit_date": "2025-09-23T12:00:06.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 284,
  "license": "CC-BY-4.0"
 }
}