{
 "id": "z-ai/glm-5.1",
 "slug": "z-ai-glm-5-1",
 "display": "Z.ai: GLM 5.1",
 "listed": true,
 "first_seen": "2026-04-07",
 "last_seen": "2026-10-09",
 "observations": 94,
 "repricings": 16,
 "current": {
  "input": 0.966,
  "output": 3.036,
  "blended": 1.4835
 },
 "current_since": "2026-10-07",
 "low": {
  "value": 1.462,
  "date": "2026-08-06"
 },
 "high": {
  "value": 2.15,
  "date": "2026-08-10"
 },
 "at_all_time_low": false,
 "new_low": false,
 "change_points": [
  {
   "date": "2026-04-07",
   "input": 1.0,
   "output": 3.1999999999999997,
   "blended": 1.55
  },
  {
   "date": "2026-04-09",
   "input": 1.395,
   "output": 4.4,
   "blended": 2.14625
  },
  {
   "date": "2026-04-10",
   "input": 0.95,
   "output": 3.15,
   "blended": 1.5
  },
  {
   "date": "2026-04-23",
   "input": 1.0499999999999998,
   "output": 3.5,
   "blended": 1.6625
  },
  {
   "date": "2026-06-14",
   "input": 0.98,
   "output": 3.08,
   "blended": 1.505
  },
  {
   "date": "2026-07-02",
   "input": 0.975,
   "output": 4.3,
   "blended": 1.80625
  },
  {
   "date": "2026-07-03",
   "input": 0.966,
   "output": 3.036,
   "blended": 1.4835
  },
  {
   "date": "2026-08-06",
   "input": 0.952,
   "output": 2.992,
   "blended": 1.462
  },
  {
   "date": "2026-08-10",
   "input": 1.4,
   "output": 4.4,
   "blended": 2.15
  },
  {
   "date": "2026-08-15",
   "input": 0.966,
   "output": 3.036,
   "blended": 1.4835
  },
  {
   "date": "2026-08-25",
   "input": 1.26,
   "output": 3.96,
   "blended": 1.935
  },
  {
   "date": "2026-08-30",
   "input": 0.966,
   "output": 3.036,
   "blended": 1.4835
  },
  {
   "date": "2026-09-25",
   "input": 0.9646,
   "output": 3.0316,
   "blended": 1.48135
  },
  {
   "date": "2026-09-28",
   "input": 1.4,
   "output": 4.4,
   "blended": 2.15
  },
  {
   "date": "2026-10-01",
   "input": 0.9646,
   "output": 3.0316,
   "blended": 1.48135
  },
  {
   "date": "2026-10-03",
   "input": 1.4,
   "output": 4.4,
   "blended": 2.15
  },
  {
   "date": "2026-10-07",
   "input": 0.966,
   "output": 3.036,
   "blended": 1.4835
  }
 ],
 "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)"
}