System Prompt 与多轮对话

注意：此平台 Chat Completions API 仅支持流式调用。多轮对话推荐使用 Responses API。

Chat Completions API（流式 + System Prompt）

Python

from openai import OpenAI

client = OpenAI(api_key="your-api-key", base_url="https://www.cheapertoken.work/v1")

messages = [
    {"role": "system", "content": "你是一个专业的Python编程助手，回答简洁准确。"},
    {"role": "user", "content": "什么是列表推导式？"},
]

stream = client.chat.completions.create(
    model="gpt-5.4",
    messages=messages,
    stream=True,
)

for chunk in stream:
    if chunk.choices[0].delta.content is not None:
        print(chunk.choices[0].delta.content, end="", flush=True)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "your-api-key",
  baseURL: "https://www.cheapertoken.work/v1",
});

const messages = [
  { role: "system", content: "你是一个专业的Python编程助手，回答简洁准确。" },
  { role: "user", content: "什么是列表推导式？" },
];

const stream = await client.chat.completions.create({
  model: "gpt-5.4",
  messages,
  stream: true,
});

for await (const chunk of stream) {
  const content = chunk.choices[0]?.delta?.content;
  if (content) process.stdout.write(content);
}

curl

curl https://www.cheapertoken.work/v1/chat/completions \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [
      {"role": "system", "content": "你是一个专业的Python编程助手，回答简洁准确。"},
      {"role": "user", "content": "什么是列表推导式？"}
    ],
    "stream": true
  }'

Responses API（多轮对话）

Python

from openai import OpenAI

client = OpenAI(api_key="your-api-key", base_url="https://www.cheapertoken.work/v1")

response = client.responses.create(
    model="gpt-5.4",
    instructions="你是一个友好的助手。",
    input="我叫小明"
)
print(response.output_text)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "your-api-key",
  baseURL: "https://www.cheapertoken.work/v1",
});

const response = await client.responses.create({
  model: "gpt-5.4",
  instructions: "你是一个友好的助手。",
  input: "我叫小明",
});
console.log(response.output_text);

curl

curl https://www.cheapertoken.work/v1/responses \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "instructions": "你是一个友好的助手。",
    "input": "我叫小明"
  }'