{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2024-0185",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "Qwen2-1.5B-Instruct: generation-defaults change at 1527f49 (2024-06-06)",
 "details": "Qwen2-1.5B-Instruct: generation defaults changed (temperature unset to 0.7, top_k unset to 20); a call that does not pass these explicitly now generates differently (2024-06-06).\n\nRepository: https://huggingface.co/Qwen/Qwen2-1.5B-Instruct. Revisions from 1527f494deb8110df263e20032dbd96a11edc46a onward carry this change; a pin at 8681046f92034373e55afbaddd7cf419f2c472d0 or earlier does not.\n\nChanged keys:\n- generation temperature: unset -> 0.7 (generation-defaults)\n- generation top_k: unset -> 20 (generation-defaults)\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/Qwen/Qwen2-1.5B-Instruct",
     "events": [
      {
       "introduced": "1527f494deb8110df263e20032dbd96a11edc46a"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "Qwen/Qwen2-1.5B-Instruct",
    "previous_revision": "8681046f92034373e55afbaddd7cf419f2c472d0"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/Qwen/Qwen2-1.5B-Instruct/commit/1527f494deb8110df263e20032dbd96a11edc46a"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/Qwen/Qwen2-1.5B-Instruct"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/Qwen/Qwen2-1.5B-Instruct.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "Qwen/Qwen2-1.5B-Instruct",
  "kind": "generation-defaults",
  "classes": [
   "generation-defaults"
  ],
  "changed_keys": [
   {
    "file": "generation",
    "key": "temperature",
    "before": null,
    "after": 0.7,
    "class": "generation-defaults"
   },
   {
    "file": "generation",
    "key": "top_k",
    "before": null,
    "after": 20,
    "class": "generation-defaults"
   }
  ],
  "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": "2024-06-06T09:10:54.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 2,
  "license": "CC-BY-4.0"
 }
}