{
 "id": "tencent/hy4-preview",
 "slug": "tencent-hy4-preview",
 "display": "Tencent: Hy4 preview",
 "listed": true,
 "first_seen": "2026-08-28",
 "last_seen": "2026-10-09",
 "observations": 32,
 "repricings": 1,
 "current": {
  "input": 0.7506,
  "output": 2.2509,
  "blended": 1.125675
 },
 "current_since": "2026-09-30",
 "low": {
  "value": 1.125675,
  "date": "2026-09-30"
 },
 "high": {
  "value": 1.25075,
  "date": "2026-08-28"
 },
 "at_all_time_low": false,
 "new_low": false,
 "change_points": [
  {
   "date": "2026-08-28",
   "input": 0.834,
   "output": 2.501,
   "blended": 1.25075
  },
  {
   "date": "2026-09-30",
   "input": 0.7506,
   "output": 2.2509,
   "blended": 1.125675
  }
 ],
 "generated": "2026-10-09T11:30:13+00:00",
 "unit": "USD per 1M tokens; blended = (3 * input + output) / 4",
 "source": "OpenRouter public model listing via Wayback Machine snapshots (2023-07 to 2026-04) and LLMPI daily snapshots (2026-06 onward)"
}