Documentation Index
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FocusAPI Chat Completions 附录参考：POST /v1/chat/completions 端点、请求字段、流式输出和响应结构。
POST /v1/chat/completions
https://www.focusapi.cn/v1
| 头 | 必填 | 说明 |
|---|---|---|
Authorization | 是 | Bearer sk-your-api-key |
Content-Type | 是 | application/json |
| 字段 | 类型 | 说明 |
|---|---|---|
model | string | 模型 ID，见模型广场 |
messages | array | 对话消息列表，role 为 system / user / assistant |
stream | boolean | true 时以 SSE 流式返回 |
temperature | number | 采样温度，可选 |
max_tokens | integer | 最大生成 token 数，可选 |
{
"model": "gpt-4o-mini",
"messages": [
{ "role": "user", "content": "你好" }
]
}
"stream": true 后，响应为 Server-Sent Events (SSE)，每行以 data: 开头。
Python SDK 示例：
stream = client.chat.completions.create(
model="gpt-4o-mini",
messages=[{"role": "user", "content": "你好"}],
stream=True,
)
for chunk in stream:
if chunk.choices[0].delta.content:
print(chunk.choices[0].delta.content, end="")
{
"id": "chatcmpl-xxx",
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": { "role": "assistant", "content": "..." },
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 10,
"completion_tokens": 20,
"total_tokens": 30
}
}
usage 用于计费参考，具体扣费规则见 计费说明。