Claude Sonnet 5.5 API

curl https://01router.com/api/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-5.5",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": false
  }'

Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "id": "chatcmpl-example",
  "object": "chat.completion",
  "model": "claude-sonnet-5.5",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello! How can I help?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 8,
    "total_tokens": 17
  }
}

curl "https://01router.com/api/v1/models/claude-sonnet-5.5"

{
  "error": {
    "message": "Invalid or missing API key",
    "code": "unauthorized"
  }
}