Anthropic: Claude Opus 4.8 (Fast)

Models

Model details

Model
anthropic/claude-opus-4.8-fast
Provider
openrouter
API
openai-completions
Base URL
https://openrouter.ai/api/v1
Input
text, image
Reasoning
Yes
Context window
1,000,000
Max tokens
128,000
Cost / million input
$10
Cost / million output
$50
Cost / million cache read
$1
Cost / million cache write
$12.5

Also available from other providers

No obvious cross-provider matches found.

Model config JSON
{
  "providers": {
    "openrouter": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "anthropic/claude-opus-4.8-fast",
          "name": "Anthropic: Claude Opus 4.8 (Fast)",
          "reasoning": true,
          "input": [
            "text",
            "image"
          ],
          "contextWindow": 1000000,
          "maxTokens": 128000,
          "cost": {
            "input": 10,
            "output": 50,
            "cacheRead": 1,
            "cacheWrite": 12.5
          }
        }
      ],
      "api": "openai-completions",
      "baseUrl": "https://openrouter.ai/api/v1"
    }
  }
}