OpenAI Main: Gpt 5 4 Mini

Pricing

What a request costs here, against the unit the model bills on. Every response returns the exact figure as cost.

Call this model

The model id is the only field that changes between models on the same endpoint.

curl https://api.routehook.ai/v1/chat/completions \
  -H "Authorization: Bearer $ROUTEHOOK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4-mini",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'