{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2026-0070",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4: template change at 3ff6a82 (2026-08-05)",
 "details": "NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4: derived parameters 32.91B to 105.10B (+72.19B, +144.37 GB of bf16 weights); the chat template text changed but rendered byte-identically on the fixed conversation set (system+user, multi-turn, tool call) (2026-08-05).\n\nRepository: https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4. Revisions from 3ff6a82aadec49f1f12d8bdb12df5575560d1a44 onward carry this change; a pin at 4a21ff66eed9affcad84f3bd40931a1b41ff90d3 or earlier does not.\n\nChanged keys:\n- tokenizer chat_template_sha256: 82753bef5cedc493 -> 58933db77d3099b4 (template)\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/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4",
     "events": [
      {
       "introduced": "3ff6a82aadec49f1f12d8bdb12df5575560d1a44"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4",
    "previous_revision": "4a21ff66eed9affcad84f3bd40931a1b41ff90d3"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4/commit/3ff6a82aadec49f1f12d8bdb12df5575560d1a44"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4",
  "kind": "template",
  "classes": [
   "template"
  ],
  "changed_keys": [
   {
    "file": "tokenizer",
    "key": "chat_template_sha256",
    "before": "82753bef5cedc493",
    "after": "58933db77d3099b4",
    "class": "template"
   }
  ],
  "impact": {
   "memory": true,
   "serving": true,
   "tokenizer": true,
   "licence": null
  },
  "breaking": false,
  "breaking_rule": "https://www.neurarch.com/changes-feeds/advisories/index.json#breaking_rule",
  "consequence": {
   "params": {
    "before": 32913396928,
    "after": 105098907008
   },
   "weightsGbBf16": {
    "before": 65.827,
    "after": 210.198
   },
   "trainPeakGb": {
    "before": 888.313,
    "after": 2565.477
   },
   "fingerprint": {
    "before": "8bce5cb8",
    "after": "dbf803de"
   },
   "context": null,
   "eos": null,
   "bos": null
  },
  "commit_date": "2026-08-05T22:25:13.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 0,
  "license": "CC-BY-4.0"
 }
}