curl --request POST \
  --url https://api.octen.ai/v1/messages \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "model": "anthropic/claude-opus-4.8",
  "max_tokens": 2048,
  "messages": [
    {
      "role": "user",
      "content": "Explain attention in one sentence."
    }
  ]
}
'

{
  "id": "msg_01XFDUDYJgAACzvnptvVoYEL",
  "type": "message",
  "role": "assistant",
  "model": "anthropic/claude-opus-4.8",
  "content": [
    {
      "type": "text",
      "text": "Attention lets a model dynamically weight its inputs and focus on the most relevant information."
    }
  ],
  "stop_reason": "end_turn",
  "stop_sequence": null,
  "usage": {
    "input_tokens": 18,
    "output_tokens": 32
  }
}