GPT-5.5 Pro

Model details

← Back

GPT-5.5 Pro

Model
gpt-5.5-pro
Provider
openai
API
openai-responses
Base URL
https://api.openai.com/v1
Input
text, image
Reasoning
Yes
Context window
1,050,000
Max tokens
128,000
Cost / million input
$30
Cost / million output
$180
Cost / million cache read
$0
Cost / million cache write
$0

Also available from other providers

Model config JSON
{
  "providers": {
    "openai": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "gpt-5.5-pro",
          "name": "GPT-5.5 Pro",
          "reasoning": true,
          "input": [
            "text",
            "image"
          ],
          "contextWindow": 1050000,
          "maxTokens": 128000,
          "cost": {
            "input": 30,
            "output": 180,
            "cacheRead": 0,
            "cacheWrite": 0
          }
        }
      ],
      "api": "openai-responses",
      "baseUrl": "https://api.openai.com/v1"
    }
  }
}