{
 "schema_version": "1.7.0",
 "id": "x_NXMC-2025-0104",
 "modified": "2026-10-19T02:33:38.839Z",
 "published": "2026-10-18T09:00:52.565Z",
 "summary": "Qwen3-0.6B: structural change at d26dbbb (2025-09-22)",
 "details": "Qwen3-0.6B: declared dtype \"float32\" to \"bfloat16\"; the chat template changed and renders differently (multi-turn, tool-call); prompts rendered with the old one no longer match what the model now expects, so cached prompts and eval sets need re-rendering (2025-09-22).\n\nRepository: https://huggingface.co/PrimeIntellect/Qwen3-0.6B. Revisions from d26dbbb7fce164b397e53b2dcbc45abf40433c1b onward carry this change; a pin at 1f818745f470b18c51d477e185aa671da451bdfd or earlier does not.\n\nChanged keys:\n- dtype: float32 -> bfloat16 (structural)\n- tokenizer chat_template_sha256: cd8e9439f0570856 -> 12062a547e3e7fa2 (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/PrimeIntellect/Qwen3-0.6B",
     "events": [
      {
       "introduced": "d26dbbb7fce164b397e53b2dcbc45abf40433c1b"
      }
     ]
    }
   ],
   "database_specific": {
    "model": "PrimeIntellect/Qwen3-0.6B",
    "previous_revision": "1f818745f470b18c51d477e185aa671da451bdfd"
   }
  }
 ],
 "references": [
  {
   "type": "INTRODUCED",
   "url": "https://huggingface.co/PrimeIntellect/Qwen3-0.6B/commit/d26dbbb7fce164b397e53b2dcbc45abf40433c1b"
  },
  {
   "type": "PACKAGE",
   "url": "https://huggingface.co/PrimeIntellect/Qwen3-0.6B"
  },
  {
   "type": "WEB",
   "url": "https://www.neurarch.com/changes-feeds/models/PrimeIntellect/Qwen3-0.6B.html"
  }
 ],
 "database_specific": {
  "source": "neurarch model change tracker",
  "model": "PrimeIntellect/Qwen3-0.6B",
  "kind": "structural",
  "classes": [
   "structural",
   "template"
  ],
  "changed_keys": [
   {
    "file": "config",
    "key": "dtype",
    "before": "float32",
    "after": "bfloat16",
    "class": "structural"
   },
   {
    "file": "tokenizer",
    "key": "chat_template_sha256",
    "before": "cd8e9439f0570856",
    "after": "12062a547e3e7fa2",
    "class": "template"
   }
  ],
  "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": "2025-09-22T09:44:23.000Z",
  "detected_at": "2026-10-18T09:00:52.565Z",
  "detected_by": "backfill",
  "days_since_first_commit": 40,
  "license": "CC-BY-4.0"
 }
}