{
 "id": "deepseek/deepseek-v4.1-flash",
 "slug": "deepseek-deepseek-v4-1-flash",
 "display": "DeepSeek: DeepSeek V4.1 Flash",
 "listed": true,
 "first_seen": "2026-09-17",
 "last_seen": "2026-10-09",
 "observations": 23,
 "repricings": 13,
 "current": {
  "input": 0.3,
  "output": 1.2,
  "blended": 0.525
 },
 "current_since": "2026-10-09",
 "low": {
  "value": 0.09875,
  "date": "2026-09-26"
 },
 "high": {
  "value": 0.60225,
  "date": "2026-10-04"
 },
 "at_all_time_low": false,
 "new_low": false,
 "change_points": [
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   "date": "2026-09-17",
   "input": 0.15,
   "output": 0.6,
   "blended": 0.2625
  },
  {
   "date": "2026-09-24",
   "input": 0.14,
   "output": 0.42,
   "blended": 0.21
  },
  {
   "date": "2026-09-25",
   "input": 0.15,
   "output": 0.6,
   "blended": 0.2625
  },
  {
   "date": "2026-09-26",
   "input": 0.035,
   "output": 0.29,
   "blended": 0.09875
  },
  {
   "date": "2026-09-29",
   "input": 0.3,
   "output": 1.2,
   "blended": 0.525
  },
  {
   "date": "2026-09-30",
   "input": 0.0198,
   "output": 0.396,
   "blended": 0.11385
  },
  {
   "date": "2026-10-01",
   "input": 0.03,
   "output": 0.5,
   "blended": 0.1475
  },
  {
   "date": "2026-10-02",
   "input": 0.3,
   "output": 1.2,
   "blended": 0.525
  },
  {
   "date": "2026-10-04",
   "input": 0.003,
   "output": 2.4,
   "blended": 0.60225
  },
  {
   "date": "2026-10-05",
   "input": 0.3,
   "output": 1.2,
   "blended": 0.525
  },
  {
   "date": "2026-10-06",
   "input": 0.012563,
   "output": 1.32,
   "blended": 0.339422
  },
  {
   "date": "2026-10-07",
   "input": 0.05,
   "output": 1.2,
   "blended": 0.3375
  },
  {
   "date": "2026-10-08",
   "input": 0.0351,
   "output": 1.0,
   "blended": 0.276325
  },
  {
   "date": "2026-10-09",
   "input": 0.3,
   "output": 1.2,
   "blended": 0.525
  }
 ],
 "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)"
}