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

# 6.2 Chat Completions（OpenAI 兼容）

## **6.2 Chat Completions（OpenAI 兼容）**

**端点：** `POST /v1/chat/completions`

**Base URL：** `https://api.tooken.ai`

### **请求参数**

| **参数**        | **类型**        | **必填** | **描述**                                      |
| ------------- | ------------- | ------ | ------------------------------------------- |
| `model`       | string        | 是      | 模型 ID，或 `auto` / `auto-fast` / `auto-cheap` |
| `messages`    | array         | 是      | 对话消息列表                                      |
| `stream`      | boolean       | 否      | 是否流式返回，默认 `false`                           |
| `max_tokens`  | integer       | 否      | 最大输出 Token 数                                |
| `temperature` | number        | 否      | 随机性，0-2，默认 1                                |
| `tools`       | array         | 否      | 工具定义列表                                      |
| `tool_choice` | string/object | 否      | 工具选择策略                                      |

**平台扩展参数：**

| **参数**           | **类型** | **描述**                 |
| ---------------- | ------ | ---------------------- |
| `route_strategy` | object | Auto 路由策略配置            |
| `budget_limit`   | number | 本次请求最大 Credits 上限      |
| `agent_wallet`   | string | Agent 钱包地址（用于 x402 结算） |

### **请求示例**

```
curl https://api.tooken.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "auto",
    "messages": [
      {"role": "system", "content": "你是一个专业的财务分析师。"},
      {"role": "user", "content": "分析这家公司的盈利能力"}
    ],
    "stream": false,
    "route_strategy": {
      "cost_weight": 0.6,
      "quality_weight": 0.4
    }
  }'
```

### **响应（非流式）**

```
{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "created": 1719000000,
  "model": "kimi-k2",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "从财务指标来看..."
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 150,
    "completion_tokens": 800,
    "total_tokens": 950
  },
  "platform": {
    "routed_model": "kimi-k2",
    "route_reason": "chinese-analysis-optimized",
    "credits_consumed": 0.475,
    "cost_saved_credits": 13.525
  }
}
```

### **流式响应（SSE）**

```
curl https://api.tooken.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{"model": "auto", "messages": [...], "stream": true}'
```

```
data: {"id":"chatcmpl-abc","object":"chat.completion.chunk","choices":[{"delta":{"content":"从"},"index":0}]}
data: {"id":"chatcmpl-abc","object":"chat.completion.chunk","choices":[{"delta":{"content":"财务"},"index":0}]}
...
data: {"id":"chatcmpl-abc","object":"chat.completion.chunk","choices":[{"delta":{},"finish_reason":"stop","index":0}]}
data: [DONE]
```

***