curl --request POST \
  --url https://direct.evolink.ai/v1/chat/completions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "qwen3.8-max-preview",
  "messages": [
    {
      "role": "system",
      "content": "You are a helpful assistant."
    },
    {
      "role": "user",
      "content": "Hello, please introduce yourself"
    }
  ]
}
'

{
  "id": "chatcmpl-xxxxxxxx",
  "object": "chat.completion",
  "created": 1735120033,
  "model": "qwen3.8-max-preview",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello! I am Tongyi Qwen3.8-Max-Preview.",
        "reasoning_content": "<string>",
        "tool_calls": [
          {}
        ]
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 3019,
    "completion_tokens": 104,
    "total_tokens": 3123,
    "completion_tokens_details": {
      "reasoning_tokens": 0
    },
    "prompt_tokens_details": {
      "cached_tokens": 2048,
      "cache_creation_input_tokens": 0
    }
  }
}

{
  "error": {
    "code": 400,
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": 401,
    "message": "Invalid or expired token",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": 402,
    "message": "Insufficient credits",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "code": 429,
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": 500,
    "message": "Internal server error",
    "type": "server_error"
  }
}

Chat Completions API

Qwen3.8-Max-Preview - Full Parameter Documentation

🚧 This model is not yet available, stay tuned

Call Qwen3.8-Max-Preview using the OpenAI Chat Completions protocol
Multi-turn conversation: supports single-turn or multi-turn contextual conversations
System prompt: set the AI’s role and behavior via a role=system message
Multimodal input: pass a content part array in content, supporting text / image_url / input_audio / video_url
Context caching: add cache_control on a content part to declare explicit caching; see usage.prompt_tokens_details in the response for hit details
Thinking mode: enabled with enable_thinking=true, thinking content returned through reasoning_content
Streaming output: when stream=true, returned chunk by chunk via SSE

POST

chat

completions

curl --request POST \
  --url https://direct.evolink.ai/v1/chat/completions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "qwen3.8-max-preview",
  "messages": [
    {
      "role": "system",
      "content": "You are a helpful assistant."
    },
    {
      "role": "user",
      "content": "Hello, please introduce yourself"
    }
  ]
}
'

{
  "id": "chatcmpl-xxxxxxxx",
  "object": "chat.completion",
  "created": 1735120033,
  "model": "qwen3.8-max-preview",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello! I am Tongyi Qwen3.8-Max-Preview.",
        "reasoning_content": "<string>",
        "tool_calls": [
          {}
        ]
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 3019,
    "completion_tokens": 104,
    "total_tokens": 3123,
    "completion_tokens_details": {
      "reasoning_tokens": 0
    },
    "prompt_tokens_details": {
      "cached_tokens": 2048,
      "cache_creation_input_tokens": 0
    }
  }
}

{
  "error": {
    "code": 400,
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": 401,
    "message": "Invalid or expired token",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": 402,
    "message": "Insufficient credits",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "code": 429,
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": 500,
    "message": "Internal server error",
    "type": "server_error"
  }
}

BaseURL note: The default BaseURL is https://direct.evolink.ai, which offers better support for text models and long connections. https://api.evolink.ai is the primary multimodal endpoint; use it when your request includes image / audio / video input.

Authorizations

Authorization

string

header

required

##All APIs require Bearer Token authentication##

Get API Key:

Visit API Key Management Page to get your API Key

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

enum<string>

required

Chat model name

Available options:

qwen3.8-max-preview

Example:

"qwen3.8-max-preview"

messages

(System Message · object | User Message · object | Assistant Message · object | Tool Message · object)[]

required

List of conversation messages, supporting multi-turn conversations. Messages from different roles (system / user / assistant / tool) have different field structures; select the corresponding role to view details.

System Message
User Message
Assistant Message
Tool Message

Show child attributes

enable_thinking

boolean

default:false

Whether to enable deep thinking

true: the model outputs its thinking process, returned through reasoning_content
false (default): does not output the thinking process

Note: some models require this to be explicitly set to true to return thinking content in non-streaming calls.

temperature

number

Sampling temperature, controls output randomness. Lower values are more deterministic, higher values more diverse. Range [0, 2]. It is recommended not to adjust temperature and top_p at the same time.

Required range: 0 <= x <= 2

top_p

number

Nucleus Sampling parameter, samples from the tokens within the top cumulative probability. Range (0, 1]. It is recommended not to adjust temperature and top_p at the same time.

Required range: 0 <= x <= 1

max_completion_tokens

integer

Upper limit on the length of generated content (in tokens), including the chain of thought and the answer. Recommended for thinking models. The default and maximum values are both the model's maximum output length; once exceeded, generation stops early with finish_reason=length.

max_tokens

integer

Legacy generation length limit parameter.

Deprecated: new integrations should use max_completion_tokens instead. This parameter only limits the answer portion (excluding the chain of thought).

stream

boolean

default:false

Whether to return the response in a streaming manner.

true: returned chunk by chunk via SSE (Server-Sent Events)
false (default): returns the full response at once

stream_options

object

Streaming response options, effective only when stream=true.

Show child attributes

tools

object[]

List of tool definitions for Function Calling. Each tool must define a name, description, and parameter schema.

Show child attributes

Response

Conversation generated successfully

string

Unique identifier for this conversation

Example:

"chatcmpl-xxxxxxxx"

object

string

Example:

"chat.completion"

created

integer

Creation time (Unix seconds)

Example:

1735120033

model

string

Example:

"qwen3.8-max-preview"

choices

object[]

Show child attributes

usage

object

Token usage statistics.

Show child attributes

MiniMax-M2.5 - Complete API Reference Qwen3.8-Max-Preview - Responses API

Image Series

Video Series

Audio Series

Text Series

Account Management

Task Management

File Management

Qwen3.8-Max-Preview - Full Parameter Documentation

Authorizations

Body

Response