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

# 快速开始

生成 API 密钥并进行首次调用

## 直接调用 Onetoken API

<Tip>
  其中 `<Onetoken_API_KEY>` 替换为 [Onetoken Key](https://onetoken.one/console/token)，注意 `key` 的有效期和额度限制。
</Tip>

可使用的 `model` 列表，可查阅 [模型广场](https://onetoken.one/pricing) ，复制模型名称替换即可。

<CodeGroup>
  ```py [Python] theme={null}
  import requests
  import json

  response = requests.post(
      url="https://onetoken.one/v1/chat/completions",
      headers={
          "Authorization": "Bearer <Onetoken_API_KEY>",
          "Content-Type": "application/json",
      },
      data=json.dumps({
          "model": "gpt-4o-mini",  # 替换模型 id
          "messages": [
              {
                  "role": "user",
                  "content": "What is the meaning of life?"
              }
          ]
      })
  )
  ```

  ```ts [JavaScript] theme={null}
  // 请在 https://onetoken.one 域名下尝试，否则有浏览器跨域问题
  fetch("https://onetoken.one/v1/chat/completions", {
    method: "POST",
    headers: {
      Authorization: "Bearer <Onetoken_API_KEY>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      model: "gpt-4o-mini",
      messages: [
        {
          role: "user",
          content: "What is the meaning of life?",
        },
      ],
    }),
  });
  ```

  ```sh [Curl] theme={null}
  curl 'https://onetoken.one/v1/chat/completions' \
    -H 'Authorization: Bearer <Onetoken_API_KEY>' \
    -H 'Content-Type: application/json' \
    -d '{
      "model": "gpt-4o-mini",
      "messages": [
        {
          "role": "user",
          "content": "What is the meaning of life?"
        }
      ]
    }'
  ```
</CodeGroup>

支持流式调用，只需要增加参数 `stream: true`

## 使用 OpenAI SDK

其中 `<Onetoken_API_KEY>` 替换为 [Onetoken Key](https://onetoken.one/console/token)，注意 `key` 的有效期和额度限制。 可使用的 `model` 列表，可查阅 [模型广场](https://onetoken.one/pricing) ，复制模型名称替换即可。

<CodeGroup>
  ```py [Python] theme={null}
  from openai import OpenAI
  import random

  client = OpenAI(
      base_url="https://onetoken.one/v1",
      api_key="<Onetoken_API_KEY>",
  )

  completion = client.chat.completions.create(
      model="gpt-4o-mini",
      messages=[
          {
              "role": "developer",
              "content": "总是用中文回复"
          },
          {
              "role": "user",
              "content": "What is the meaning of life?"
          }
      ],
      temperature=0.8,
      max_tokens=1024,
      top_p=1,
      frequency_penalty=0,
      presence_penalty=0,
      seed=random.randint(1, 1000000000),
  )

  print(completion.choices[0].message.content)
  ```

  ```js [JavaScript] theme={null}
  import OpenAI from "openai";

  const openai = new OpenAI({
    baseURL: "https://onetoken.one/v1",
    apiKey: "<Onetoken_API_KEY>",
  });

  async function main() {
    const completion = await openai.chat.completions.create({
      model: "gpt-4o-mini",
      messages: [
        {
          role: "user",
          content: "What is the meaning of life?",
        },
      ],
    });

    console.log(completion.choices[0].message);
  }

  main();
  ```
</CodeGroup>

对于支持搜索的模型，可以追加下方参数来支持：

```Python theme={null} theme={null}
  web_search_options={}, # 搜索参数
```

可用模型：`gpt-4o-search-preview`、`gpt-4o-mini-search-preview`。

<Info>注意搜索模型暂不支持 `temperature` 等细节参数。</Info>