StepFun: Step 3.5 Flash

Models

Model details

Model
stepfun/step-3.5-flash
Provider
openrouter
API
openai-completions
Base URL
https://openrouter.ai/api/v1
Input
text
Reasoning
Yes
Context window
262,144
Max tokens
16,384
Cost / million input
$0.09
Cost / million output
$0.3
Cost / million cache read
$0.02
Cost / million cache write
$0

Also available from other providers

No obvious cross-provider matches found.

Model config JSON
{
  "providers": {
    "openrouter": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "stepfun/step-3.5-flash",
          "name": "StepFun: Step 3.5 Flash",
          "reasoning": true,
          "input": [
            "text"
          ],
          "contextWindow": 262144,
          "maxTokens": 16384,
          "cost": {
            "input": 0.09,
            "output": 0.3,
            "cacheRead": 0.02,
            "cacheWrite": 0
          }
        }
      ],
      "api": "openai-completions",
      "baseUrl": "https://openrouter.ai/api/v1"
    }
  }
}