{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2022-0002",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "esm2_t33_650M_UR50D: format-only change at 6123bfa (2022-12-01)",
 "details": "esm2_t33_650M_UR50D: format-only re-save, model_max_length switched between the library's \"unset\" sentinel and unset; nothing it computes, tokenises or generates changed (2022-12-01).\n\nRepository: https://huggingface.co/facebook/esm2_t33_650M_UR50D. Revisions from 6123bfaf29ccd6aa250ac8861acc109ad5e7fb5d onward carry this change; a pin at 218058a409fe1a3e95a01fd034790ef8a6622cb5 or earlier does not.\n\nChanged keys:\n- tokenizer model_max_length: unset -> 1e+30 (format-only)\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/facebook/esm2_t33_650M_UR50D",
     "events": [
      {
       "introduced": "6123bfaf29ccd6aa250ac8861acc109ad5e7fb5d"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "facebook/esm2_t33_650M_UR50D",
    "previous_revision": "218058a409fe1a3e95a01fd034790ef8a6622cb5"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/facebook/esm2_t33_650M_UR50D/commit/6123bfaf29ccd6aa250ac8861acc109ad5e7fb5d"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/facebook/esm2_t33_650M_UR50D"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/facebook/esm2_t33_650M_UR50D.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "facebook/esm2_t33_650M_UR50D",
  "kind": "format-only",
  "classes": [
   "format-only"
  ],
  "changed_keys": [
   {
    "file": "tokenizer",
    "key": "model_max_length",
    "before": null,
    "after": 1e+30,
    "class": "format-only"
   }
  ],
  "impact": {
   "memory": false,
   "serving": true,
   "tokenizer": false,
   "licence": null
  },
  "breaking": false,
  "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": "2022-12-01T18:58:37.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 65,
  "license": "CC-BY-4.0"
 }
}