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了解如何通过 Sub2API 使用 OpenAI Responses API 格式，以及它与 Chat Completions API 的区别。
https://sub2api.ruilinlu.com/v1/responses
{
"model": "gpt-4o",
"input": "Hello!"
}
input 字段代替 Chat Completions 中的 messages 字段，支持字符串或结构化输入:
{
"model": "gpt-4o",
"input": "请写一篇关于人工智能的短文"
}
{
"model": "gpt-4o",
"input": [
{
"role": "user",
"content": "请写一篇关于人工智能的短文"
}
]
}
{
"id": "resp_xxx",
"object": "response",
"created": 1712345678,
"model": "gpt-4o",
"output": [
{
"type": "message",
"role": "assistant",
"content": [
{
"type": "output_text",
"text": "人工智能(AI)是计算机科学的一个重要分支..."
}
]
}
],
"usage": {
"input_tokens": 15,
"output_tokens": 200,
"total_tokens": 215
}
}
curl -X POST https://sub2api.ruilinlu.com/v1/responses \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "gpt-4o",
"input": "Hello!"
}'
from openai import OpenAI
client = OpenAI(
base_url="https://sub2api.ruilinlu.com/v1",
api_key="YOUR_API_KEY"
)
response = client.responses.create(
model="gpt-4o",
input="Hello!"
)
print(response.output[0].content[0].text)
| 特性 | Responses API | Chat Completions API |
|---|---|---|
| 对话状态管理 | 内置有状态(自动维护) | 无状态(需手动传递 messages) |
| 输入字段 | input | messages |
| 输出字段 | output | choices |
| 使用场景 | 多轮对话工具调用、Agent | 单次问答、简单对话 |