> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arouter.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# 创建消息

> Anthropic 兼容的 Messages API 端点。

<RequestExample>
  ```bash cURL theme={null}
  curl https://api.arouter.ai/v1/messages \
    -H "X-Api-Key: lr_live_xxxx" \
    -H "Content-Type: application/json" \
    -H "anthropic-version: 2023-06-01" \
    -d '{
      "model": "claude-sonnet-4-20250514",
      "max_tokens": 1024,
      "messages": [{"role": "user", "content": "Hello!"}]
    }'
  ```

  ```python Python theme={null}
  import anthropic

  client = anthropic.Anthropic(
      base_url="https://api.arouter.ai",
      api_key="lr_live_xxxx",
  )

  message = client.messages.create(
      model="claude-sonnet-4-20250514",
      max_tokens=1024,
      messages=[{"role": "user", "content": "Hello!"}],
  )
  ```
</RequestExample>