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API Documentation
API Reference
Chat
Create Chat Completion

Create Chat Completion

Loading models...
Q
Qwen3-Coder-Plus (qwen3-coder-plus)
qwen3-coder-plus0 models support this endpoint

Qwen3-Coder-Plus is the latest professional-grade coding LLM from Alibaba Cloud. It delivers industry-leading performance in code generation, debugging, completion, and technical explanation. Supporting over 92 programming languages and optimized for long-context reasoning, it serves as a powerful AI co-pilot for developers handling complex software architecture and rapid prototyping.

Create chat completion

https://api.modelstream.ai
POST/v1/chat/completions

Authentication

BearerAuth
AuthenticationBearer <token>

All API requests must be authenticated using a Bearer token in the Authorization header. Please ensure your API key is active.Authorization: Bearer sk-xxxxxx

Parameter Location: Header Param

Request Body

application/json

These parameters come from the selected model form_schema. Switching models updates this list and the request example.

prompt*string
RequiredExample Value: Who are you?Placeholder: Please enter your content...
temperature?number

Controls randomness: higher values increase diversity

Example Value: 0.7Value Range: 0 ≤ value ≤ 2step: 0.1
top_p?number

Controls diversity via nucleus sampling

Example Value: 1Value Range: 0 ≤ value ≤ 1step: 0.05
max_tokens?number
Example Value: 2048Value Range: 1 ≤ value ≤ 8192
presence_penalty?number
Example Value: 0Value Range: -2 ≤ value ≤ 2step: 0.1

Response Parameters

application/json
200apiDocs.responses.successCreateResponse
id?string

Parameter description for Id

object?string

Parameter description for Object

created?integer

Parameter description for Created

model?string

Model ID used

choices?array

Parameter description for Choices

usage?object

Parameter description for Usage

prompt_tokens?integer

Parameter description for Prompt Tokens

completion_tokens?integer

Parameter description for Completion Tokens

total_tokens?integer

Parameter description for Total Tokens

prompt_tokens_details?object

Parameter description for Prompt Tokens Details

completion_tokens_details?object

Parameter description for Completion Tokens Details

system_fingerprint?string

Parameter description for System Fingerprint

400apiDocs.responses.badRequestParams
error?object

Parameter description for Error

message?string

Error Message

type?string

Error Type

param?string

Related Parameters

code?string

Error Code

429apiDocs.responses.rateLimited
error?object

Parameter description for Error

message?string

Error Message

type?string

Error Type

param?string

Related Parameters

code?string

Error Code

curl -X POST "https://api.modelstream.ai/v1/chat/completions" \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "qwen3-coder-plus",
  "messages": [
    {
      "role": "user",
      "content": "Explain the concept of Quantum Entanglement in simple terms."
    }
  ],
  "temperature": 0.7,
  "top_p": 1,
  "max_tokens": 1024,
  "presence_penalty": 0
}'
{
  "id": "string",
  "object": "chat.completion",
  "created": 0,
  "model": "string",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "system",
        "content": null,
        "name": "string",
        "tool_calls": [
          {
            "id": "string",
            "type": "function",
            "function": {
              "name": "string",
              "arguments": "string"
            }
          }
        ],
        "tool_call_id": "string",
        "reasoning_content": "string"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 0,
    "completion_tokens": 0,
    "total_tokens": 0,
    "prompt_tokens_details": {
      "cached_tokens": 0,
      "text_tokens": 0,
      "audio_tokens": 0,
      "image_tokens": 0
    },
    "completion_tokens_details": {
      "text_tokens": 0,
      "audio_tokens": 0,
      "reasoning_tokens": 0
    }
  },
  "system_fingerprint": "string"
}