Chat Completions 聊天对话

Chat Completions 是 AISP 最核心的接口，支持多轮对话、流式输出（SSE）、Function Calling、多模态（Vision）等能力。 接口完全兼容 OpenAI Chat Completions API，可无缝替换 OpenAI SDK。

请求头 Headers

请求参数

messages 格式

[
  { "role": "system", "content": "你是一名AI助手" },
  { "role": "user", "content": "你好" },
  { "role": "assistant", "content": "你好，请问有什么可以帮助你？" }
]

Role 说明

普通请求示例

POST /api/openai/chatCompletions
Authorization: Bearer sk-xxxxxxxx
Content-Type: application/json

{
  "model": "deepseek-v4-pro",
  "messages": [
    { "role": "user", "content": "你好，介绍一下你自己" }
  ]
}

普通返回示例

{
  "id": "chatcmpl-xxx",
  "object": "chat.completion",
  "created": 1710000000,
  "model": "deepseek-v4-pro",
  "choices": [
    {
      "index": 0,
      "message": { "role": "assistant", "content": "你好！我是..." },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 10,
    "completion_tokens": 20,
    "total_tokens": 30
  }
}

流式输出

将 stream 设为 true，使用 SSE 协议返回：

POST /api/openai/chatCompletions

{
  "model": "deepseek-v4-pro",
  "stream": true,
  "messages": [
    { "role": "user", "content": "你好" }
  ]
}

data: {
  "id": "chatcmpl-1",
  "object": "chat.completion.chunk",
  "choices": [ { "delta": { "content": "你好" } } ]
}

data: {
  "id": "chatcmpl-2",
  "object": "chat.completion.chunk",
  "choices": [ { "delta": { "content": "！" } } ]
}

data: [DONE]

支持模型

计费说明

错误返回

{ "error": { "message": "Invalid API Key" } }
{ "error": { "message": "Model not found" } }
{ "error": { "message": "Insufficient balance" } }

Token Usage 字段

最佳实践