StepFun 3.5 Flash

Models

Model details

Model
stepfun/step-3.5-flash
Provider
vercel-ai-gateway
API
anthropic-messages
Base URL
https://ai-gateway.vercel.sh
Input
text
Reasoning
Yes
Context window
262,114
Max tokens
262,114
Cost / million input
$0.09
Cost / million output
$0.3
Cost / million cache read
$0
Cost / million cache write
$0.02

Also available from other providers

Model config JSON
{
  "providers": {
    "vercel-ai-gateway": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "stepfun/step-3.5-flash",
          "name": "StepFun 3.5 Flash",
          "reasoning": true,
          "input": [
            "text"
          ],
          "contextWindow": 262114,
          "maxTokens": 262114,
          "cost": {
            "input": 0.09,
            "output": 0.3,
            "cacheRead": 0,
            "cacheWrite": 0.02
          }
        }
      ],
      "api": "anthropic-messages",
      "baseUrl": "https://ai-gateway.vercel.sh"
    }
  }
}