Z.ai: GLM 5.1

Model details

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Z.ai: GLM 5.1

Model
z-ai/glm-5.1
Provider
openrouter
API
openai-completions
Base URL
https://openrouter.ai/api/v1
Input
text
Reasoning
Yes
Context window
202,752
Max tokens
65,535
Cost / million input
$1.05
Cost / million output
$3.5
Cost / million cache read
$0.525
Cost / million cache write
$0

Also available from other providers

Model config JSON
{
  "providers": {
    "openrouter": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "z-ai/glm-5.1",
          "name": "Z.ai: GLM 5.1",
          "reasoning": true,
          "input": [
            "text"
          ],
          "contextWindow": 202752,
          "maxTokens": 65535,
          "cost": {
            "input": 1.0499999999999998,
            "output": 3.5,
            "cacheRead": 0.5249999999999999,
            "cacheWrite": 0
          }
        }
      ],
      "api": "openai-completions",
      "baseUrl": "https://openrouter.ai/api/v1"
    }
  }
}