{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2026-0025",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "Laguna-S-2.1-NVFP4: structural change at f8fdfcd (2026-08-01)",
 "details": "Laguna-S-2.1-NVFP4: context window 262144 to 1048576 tokens; quantization_config changed; the stored format of the weights is different (2026-08-01).\n\nRepository: https://huggingface.co/poolside/Laguna-S-2.1-NVFP4. Revisions from f8fdfcdc4e7b0c474a0102430a8cae0a3a358669 onward carry this change; a pin at 07614121b31898586430f189d27a25a0be310843 or earlier does not.\n\nChanged keys:\n- max_position_embeddings: 262144 -> 1048576 (structural)\n- quantization_config: {\"format\":\"nvfp4-pack-quantized\",\"global_compression_ratio\":null,\"quant_method\":\"compressed-tensors\",\"quantization_status\":\"compressed\",\"version\":\"0.14.1.dev11+gf2ee47b\",\"_rest\":\"0763e92087092809\"} -> {\"format\":\"nvfp4-pack-quantized\",\"global_compression_ratio\":null,\"quant_method\":\"compressed-tensors\",\"quantization_status\":\"compressed\",\"version\":\"0.14.1.dev11+gf2ee47b\",\"_rest\":\"12102894df38f3ac\"} (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/poolside/Laguna-S-2.1-NVFP4",
     "events": [
      {
       "introduced": "f8fdfcdc4e7b0c474a0102430a8cae0a3a358669"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "poolside/Laguna-S-2.1-NVFP4",
    "previous_revision": "07614121b31898586430f189d27a25a0be310843"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/poolside/Laguna-S-2.1-NVFP4/commit/f8fdfcdc4e7b0c474a0102430a8cae0a3a358669"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/poolside/Laguna-S-2.1-NVFP4"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/poolside/Laguna-S-2.1-NVFP4.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "poolside/Laguna-S-2.1-NVFP4",
  "kind": "structural",
  "classes": [
   "structural"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "max_position_embeddings",
    "before": 262144,
    "after": 1048576,
    "class": "structural"
   },
   {
    "file": "config",
    "key": "quantization_config",
    "before": {
     "format": "nvfp4-pack-quantized",
     "global_compression_ratio": null,
     "quant_method": "compressed-tensors",
     "quantization_status": "compressed",
     "version": "0.14.1.dev11+gf2ee47b",
     "_rest": "0763e92087092809"
    },
    "after": {
     "format": "nvfp4-pack-quantized",
     "global_compression_ratio": null,
     "quant_method": "compressed-tensors",
     "quantization_status": "compressed",
     "version": "0.14.1.dev11+gf2ee47b",
     "_rest": "12102894df38f3ac"
    },
    "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": null,
   "weightsGbBf16": null,
   "trainPeakGb": null,
   "fingerprint": null,
   "context": {
    "before": 262144,
    "after": 1048576
   },
   "eos": null,
   "bos": null
  },
  "commit_date": "2026-08-01T09:01:58.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 10,
  "license": "CC-BY-4.0"
 }
}