DeepSeek

Service endpoints

The service endpoint is different for each region. Configure the Base URL based on your selected region (Replace {WorkspaceId} with the actual Workspace ID). The available models and rate limits also vary by region. For more information, see the Rate limiting document.

OpenAI compatible
OpenAI compatible - Responses API
DashScope

China (Beijing)
US (Virginia)
Singapore
Germany (Frankfurt)
Japan (Tokyo)

The base_url for SDK call configuration is https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/compatible-mode/v1The HTTP request address is POST https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/compatible-mode/v1/chat/completions

The Responses API currently supports only deepseek-v4.1-flash, deepseek-v4-flash-0731, deepseek-v4-pro, and deepseek-v4-pro-0813, and is available only in the China (Beijing) and Singapore regions.

Singapore
China (Beijing)

The base_url for SDK calls: https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1HTTP endpoint: POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1/responses

China (Beijing)
US (Virginia)
Singapore
Germany (Frankfurt)
Japan (Tokyo)

The HTTP request address is POST https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1/services/aigc/text-generation/generationThe base_url for SDK call configuration is dashscope.base_http_api_url = "https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1"

Getting started

deepseek-v4-pro is the flagship model in the DeepSeek series and excels at programming, math, and general tasks. deepseek-v4-flash-0731 is the latest released version. You can use the enable_thinking parameter to switch between thinking and non-thinking modes. The following example shows how to call the deepseek-v4-pro model in thinking mode. You must obtain an API key and configure it as an environment variable. If you use an SDK, you must also install the OpenAI or DashScope SDK.

OpenAI compatible
DashScope
Anthropic compatible

The enable_thinking parameter is not a standard OpenAI parameter. The OpenAI Python SDK passes it through extra_body, while the Node.js SDK passes it as a top-level parameter. The reasoning_effort parameter is a standard OpenAI parameter and can be passed directly as a top-level parameter.

Python
Node.js
HTTP

Sample code

from openai import OpenAI
import os

# Initialize the OpenAI client
client = OpenAI(
    # If the environment variable is not configured, replace it with your Alibaba Cloud Model Studio API key: api_key="sk-xxx"
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    # Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
    base_url="https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1",
)

messages = [{"role": "user", "content": "Who are you?"}]
completion = client.chat.completions.create(
    model="deepseek-v4-pro",
    messages=messages,
    # Use extra_body to set enable_thinking and enable thinking mode
    extra_body={"enable_thinking": True},
    stream=True,
    stream_options={
        "include_usage": True
    },
)

reasoning_content = ""  # Complete thinking process
answer_content = ""  # Complete response
is_answering = False  # Indicates whether the response phase has started
print("\n" + "=" * 20 + "Thinking Process" + "=" * 20 + "\n")

for chunk in completion:
    if not chunk.choices:
        print("\n" + "=" * 20 + "Token Usage" + "=" * 20 + "\n")
        print(chunk.usage)
        print("Request ID:", chunk.id)
        continue

    delta = chunk.choices[0].delta

    # Collect only the thinking content
    if hasattr(delta, "reasoning_content") and delta.reasoning_content is not None:
        if not is_answering:
            print(delta.reasoning_content, end="", flush=True)
        reasoning_content += delta.reasoning_content

    # After receiving content, start generating the response
    if hasattr(delta, "content") and delta.content:
        if not is_answering:
            print("\n" + "=" * 20 + "Complete Response" + "=" * 20 + "\n")
            is_answering = True
        print(delta.content, end="", flush=True)
        answer_content += delta.content

Response

====================Thinking Process====================
Okay, the user asked a very simple self-introduction question: "Who are you?".
I need to clarify my identity, introduce myself as DeepSeek in a concise and friendly way, mention my creator, basic features, and the help I can provide.
I can organize the answer like this: first, state my identity directly, mention I was created by the DeepSeek company, then list some key features (free, long context, file upload, etc.), and finally end with a friendly invitation, asking if I can help.
====================Complete Response====================
Hello! I am DeepSeek, an AI assistant created by the DeepSeek company.
I can help you answer various questions, create text, analyze documents, assist with programming, and more. My main features are that I am **free to use**, have a **super long context** (I can process the entire 'The Three-Body Problem' trilogy at once), and support **file uploads** and **web search** (must be enabled manually).
Is there anything I can help you with? Whether it's for study, work, or just a casual chat, I'm happy to talk with you!
====================Token Usage====================
CompletionUsage(completion_tokens=238, prompt_tokens=5, total_tokens=243, completion_tokens_details=CompletionTokensDetails(accepted_prediction_tokens=None, audio_tokens=None, reasoning_tokens=93, rejected_prediction_tokens=None), prompt_tokens_details=None)
Request ID: chatcmpl-a1b2c3d4-e5f6-7890-abcd-ef1234567890

Sample code

import OpenAI from "openai";
import process from 'process';

// Initialize the OpenAI client
const openai = new OpenAI({
    // If the environment variable is not configured, replace it with your Alibaba Cloud Model Studio API key: apiKey: "sk-xxx"
    apiKey: process.env.DASHSCOPE_API_KEY,
    // Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
    baseURL: 'https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1'
});

let reasoningContent = ''; // Complete thinking process
let answerContent = ''; // Complete response
let isAnswering = false; // Indicates whether the response phase has started

async function main() {
    try {
        const messages = [{ role: 'user', content: 'Who are you?' }];

        const stream = await openai.chat.completions.create({
            model: 'deepseek-v4-pro',
            messages,
            // Note: In the Node.js SDK, non-standard parameters like enable_thinking are passed as top-level properties, not within extra_body.
            enable_thinking: true,
            stream: true,
            stream_options: {
                include_usage: true
            },
        });

        console.log('\n' + '='.repeat(20) + 'Thinking Process' + '='.repeat(20) + '\n');

        for await (const chunk of stream) {
            if (!chunk.choices?.length) {
                console.log('\n' + '='.repeat(20) + 'Token Usage' + '='.repeat(20) + '\n');
                console.log(chunk.usage);
                console.log('Request ID:', chunk.id);
                continue;
            }

            const delta = chunk.choices[0].delta;

            // Collect only the thinking content
            if (delta.reasoning_content !== undefined && delta.reasoning_content !== null) {
                if (!isAnswering) {
                    process.stdout.write(delta.reasoning_content);
                }
                reasoningContent += delta.reasoning_content;
            }

            // After receiving content, start generating the response
            if (delta.content !== undefined && delta.content) {
                if (!isAnswering) {
                    console.log('\n' + '='.repeat(20) + 'Complete Response' + '='.repeat(20) + '\n');
                    isAnswering = true;
                }
                process.stdout.write(delta.content);
                answerContent += delta.content;
            }
        }
    } catch (error) {
        console.error('Error:', error);
    }
}

main();

Response

====================Thinking Process====================
Okay, the user asked a very simple self-introduction question: "Who are you?".
I need to clarify my identity, introduce myself as DeepSeek in a concise and friendly way, mention my creator, basic features, and the help I can provide.
I can organize the answer like this: first, state my identity directly, mention I was created by the DeepSeek company, then list some key features (free, long context, file upload, etc.), and finally end with a friendly invitation, asking if I can help.
====================Complete Response====================
Hello! I am DeepSeek, an AI assistant created by the DeepSeek company.
I can help you answer various questions, create text, analyze documents, assist with programming, and more. My main features are that I am **free to use**, have a **super long context** (I can process the entire 'The Three-Body Problem' trilogy at once), and support **file uploads** and **web search** (must be enabled manually).
Is there anything I can help you with? Whether it's for study, work, or just a casual chat, I'm happy to talk with you!
====================Token Usage====================
{
  prompt_tokens: 5,
  completion_tokens: 243,
  total_tokens: 248,
  completion_tokens_details: { reasoning_tokens: 83 }
}
Request ID: chatcmpl-a1b2c3d4-e5f6-7890-abcd-ef1234567890

Sample code

curl

# Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
curl -X POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1/chat/completions \
-H "Authorization: Bearer $DASHSCOPE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
    "model": "deepseek-v4-pro",
    "messages": [
        {
            "role": "user",
            "content": "Who are you?"
        }
    ],
    "stream": true,
    "stream_options": {
        "include_usage": true
    },
    "enable_thinking": true
}'

Python
Java
HTTP

Sample code

import os
import dashscope
from dashscope import Generation

# Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
dashscope.base_http_api_url = "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1"

# Initialize the request parameters
messages = [{"role": "user", "content": "Who are you?"}]

completion = Generation.call(
    # If the environment variable is not configured, replace it with your Alibaba Cloud Model Studio API key: api_key="sk-xxx"
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    model="deepseek-v4-pro",
    messages=messages,
    result_format="message",  # Set the result format to message
    enable_thinking=True,
    stream=True,              # Enable streaming output
    incremental_output=True,  # Enable incremental output
)

reasoning_content = ""  # Complete thinking process
answer_content = ""     # Complete response
is_answering = False    # Indicates whether the response phase has started

print("\n" + "=" * 20 + "Thinking Process" + "=" * 20 + "\n")

for chunk in completion:
    message = chunk.output.choices[0].message
    # Collect only the thinking content
    if "reasoning_content" in message:
        if not is_answering:
            print(message.reasoning_content, end="", flush=True)
        reasoning_content += message.reasoning_content

    # After receiving content, start generating the response
    if message.content:
        if not is_answering:
            print("\n" + "=" * 20 + "Complete Response" + "=" * 20 + "\n")
            is_answering = True
        print(message.content, end="", flush=True)
        answer_content += message.content

print("\n" + "=" * 20 + "Token Usage" + "=" * 20 + "\n")
print(chunk.usage)
print("Request ID:", chunk.request_id)

Response

====================Thinking Process====================
Okay, the user asked a very simple self-introduction question: "Who are you?".
I need to clarify my identity, introduce myself as DeepSeek in a concise and friendly way, mention my creator, basic features, and the help I can provide.
I can organize the answer like this: first, state my identity directly, mention I was created by the DeepSeek company, then list some key features (free, long context, file upload, etc.), and finally end with a friendly invitation, asking if I can help.
====================Complete Response====================
Hello! I am DeepSeek, an AI assistant created by the DeepSeek company.
I can help you answer various questions, create text, analyze documents, assist with programming, and more. My main features are that I am **free to use**, have a **super long context** (I can process the entire 'The Three-Body Problem' trilogy at once), and support **file uploads** and **web search** (must be enabled manually).
Is there anything I can help you with? Whether it's for study, work, or just a casual chat, I'm happy to talk with you!
====================Token Usage====================
{"input_tokens": 6, "output_tokens": 240, "total_tokens": 246, "output_tokens_details": {"reasoning_tokens": 92}}
Request ID: 85735883-9062-9c33-a963-0bc12584ee68

Sample code

The DashScope Java SDK version must be 2.19.4 or later.

// DashScope SDK version >= 2.19.4
import com.alibaba.dashscope.aigc.generation.Generation;
import com.alibaba.dashscope.aigc.generation.GenerationParam;
import com.alibaba.dashscope.aigc.generation.GenerationResult;
import com.alibaba.dashscope.common.Message;
import com.alibaba.dashscope.common.Role;
import com.alibaba.dashscope.exception.ApiException;
import com.alibaba.dashscope.exception.InputRequiredException;
import com.alibaba.dashscope.exception.NoApiKeyException;
import io.reactivex.Flowable;
import java.lang.System;
import java.util.Arrays;

public class Main {
    private static StringBuilder reasoningContent = new StringBuilder();
    private static StringBuilder finalContent = new StringBuilder();
    private static boolean isFirstPrint = true;
    private static String requestId = "";
    private static void handleGenerationResult(GenerationResult message) {
        requestId = message.getRequestId();
        String reasoning = message.getOutput().getChoices().get(0).getMessage().getReasoningContent();
        String content = message.getOutput().getChoices().get(0).getMessage().getContent();
        if (reasoning != null && !reasoning.isEmpty()) {
            reasoningContent.append(reasoning);
            if (isFirstPrint) {
                System.out.println("====================Thinking Process====================");
                isFirstPrint = false;
            }
            System.out.print(reasoning);
        }
        if (content != null && !content.isEmpty()) {
            finalContent.append(content);
            if (!isFirstPrint) {
                System.out.println("\n====================Complete Response====================");
                isFirstPrint = true;
            }
            System.out.print(content);
        }
    }
    private static GenerationParam buildGenerationParam(Message userMsg) {
        return GenerationParam.builder()
                // If the environment variable is not configured, replace the following line with your Alibaba Cloud Model Studio API key: .apiKey("sk-xxx")
                .apiKey(System.getenv("DASHSCOPE_API_KEY"))
                .model("deepseek-v4-pro")
                .enableThinking(true)
                .incrementalOutput(true)
                .resultFormat("message")
                .messages(Arrays.asList(userMsg))
                .build();
    }
    public static void streamCallWithMessage(Generation gen, Message userMsg)
            throws NoApiKeyException, ApiException, InputRequiredException {
        GenerationParam param = buildGenerationParam(userMsg);
        Flowable<GenerationResult> result = gen.streamCall(param);
        result.blockingForEach(message -> handleGenerationResult(message));
    }
    public static void main(String[] args) {
        try {
            // Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
            Generation gen = new Generation("http", "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1");
            Message userMsg = Message.builder().role(Role.USER.getValue()).content("Who are you?").build();
            streamCallWithMessage(gen, userMsg);
            System.out.println("\nRequest ID: " + requestId);
        } catch (ApiException | NoApiKeyException | InputRequiredException e) {
            System.err.println("An exception occurred: " + e.getMessage());
        }
    }
}

Response

====================Thinking Process====================
Okay, the user asked a very simple self-introduction question: "Who are you?".
I need to clarify my identity, introduce myself as DeepSeek in a concise and friendly way, mention my creator, basic features, and the help I can provide.
I can organize the answer like this: first, state my identity directly, mention I was created by the DeepSeek company, then list some key features (free, long context, file upload, etc.), and finally end with a friendly invitation, asking if I can help.
====================Complete Response====================
Hello! I am DeepSeek, an AI assistant created by the DeepSeek company.
I can help you answer various questions, create text, analyze documents, assist with programming, and more. My main features are that I am **free to use**, have a **super long context** (I can process the entire 'The Three-Body Problem' trilogy at once), and support **file uploads** and **web search** (must be enabled manually).
Is there anything I can help you with? Whether it's for study, work, or just a casual chat, I'm happy to talk with you!

Sample code

curl

# Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
curl -X POST "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1/services/aigc/text-generation/generation" \
-H "Authorization: Bearer $DASHSCOPE_API_KEY" \
-H "Content-Type: application/json" \
-H "X-DashScope-SSE: enable" \
-d '{
    "model": "deepseek-v4-pro",
    "input":{
        "messages":[
            {
                "role": "user",
                "content": "Who are you?"
            }
        ]
    },
    "parameters":{
        "enable_thinking": true,
        "incremental_output": true,
        "result_format": "message"
    }
}'

Authentication: Pass your Model Studio API key in either the x-api-key header or the Authorization: Bearer header. For details about parameters such as thinking mode, see Anthropic-compatible Messages.

Python
HTTP

Sample code

import anthropic
import os

client = anthropic.Anthropic(
    # If the environment variable is not configured, replace the value with your Model Studio API key: api_key="sk-xxx"
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    # When you make a call, replace {WorkspaceId} with your actual Workspace ID.
    base_url="https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/apps/anthropic",
)

message = client.messages.create(
    model="deepseek-v4-pro",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Who are you?"}
    ],
    stream=True,
)

for event in message:
    if event.type == "content_block_delta":
        if hasattr(event.delta, "thinking"):
            print(event.delta.thinking, end="", flush=True)
        if hasattr(event.delta, "text"):
            print(event.delta.text, end="", flush=True)

Sample code

curl

# Singapore region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
curl -X POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/apps/anthropic/v1/messages \
-H "Authorization: Bearer $DASHSCOPE_API_KEY" \
-H "Content-Type: application/json" \
-H "anthropic-version: 2023-06-01" \
-d '{
    "model": "deepseek-v4-pro",
    "max_tokens": 1024,
    "messages": [
        {
            "role": "user",
            "content": "Who are you?"
        }
    ]
}'

Inference strength (reasoning_effort)

The deepseek-v4.1-flash, deepseek-v4-pro, deepseek-v4-flash-0731, and deepseek-v4-pro-0813 models have thinking mode enabled by default. You can adjust the inference strength using the reasoning_effort parameter. The valid values are low (supported only by deepseek-v4.1-flash, deepseek-v4-flash-0731, and deepseek-v4-pro-0813), high, and max. The default value is high.

For deepseek-v4-pro, low and medium produce the same behavior as high, and xhigh produces the same behavior as max. For deepseek-v4.1-flash, minimal is mapped to low, medium and xhigh are mapped to high, and ultra is mapped to max.

OpenAI compatible
DashScope

Python

from openai import OpenAI
import os
client = OpenAI(
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    # China (Beijing) region. Replace {WorkspaceId} with your Bailian workspace ID. URLs vary by region.
    base_url="https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/compatible-mode/v1",
)
completion = client.chat.completions.create(
    model="deepseek-v4-pro",
    messages=[{"role": "user", "content": "Which is greater, 9.9 or 9.11?"}],
    reasoning_effort="high",
)
print(completion.choices[0].message.content)

import os
import dashscope
from dashscope import Generation
# The following is the configuration for the China (Beijing) region. Replace {WorkspaceId} with your actual workspace ID when making a call. Configurations vary by region.
dashscope.base_http_api_url = "https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1"
response = Generation.call(
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    model="deepseek-v4-pro",
    messages=[{"role": "user", "content": "Which is greater, 9.9 or 9.11?"}],
    reasoning_effort="high",
    result_format="message",
)
print(response.output.choices[0].message.content)

Responses API

deepseek-v4.1-flash, deepseek-v4-flash-0731, deepseek-v4-pro, and deepseek-v4-pro-0813 support calls through the OpenAI-compatible Responses API. Only the China (Beijing) and Singapore regions are supported. For endpoints, see Service endpoints. When calling the Responses API, you can add the web_search (Web search), web_extractor (Web extractor), and code_interpreter (Code Interpreter) tools to the tools parameter.

Other features

Model	Multi-turn conversation	Function Calling	Context cache	Structured output	Prefix Completion
deepseek-v4.1-flash	Supported	Supported	Supported	Supported	Not supported
deepseek-v4-pro	Supported	Supported	Supported	Supported	Not supported
deepseek-v4-flash-0731	Supported	Supported	Supported	Supported	Not supported
Distilled models	Supported	Not supported	Not supported	Not supported	Not supported

Default parameter values

Model	temperature	top_p	repetition_penalty	presence_penalty	max_tokens	thinking_budget
deepseek-v4.1-flash	1.0	1.0	-	-	393,216	-
deepseek-v4-pro	1.0	1.0	-	-	393,216 in total
deepseek-v4-flash-0731	1.0	1.0	-	-	393,216 in total
Distilled version	0.6	0.95	-	1	16,384	16,384

A hyphen (-) indicates that the parameter has no default value and cannot be set.
The distilled models do not support setting these parameter values.
"393,216 in total" indicates that for deepseek-v4 series models, max_tokens and thinking_budget share the same limit, and their combined maximum is 393,216 tokens (the maximum output length of the model).
For parameter definitions, see OpenAI compatible - Chat.

Models and billing

Hybrid thinking models (use the enable_thinking parameter to control thinking mode): deepseek-v4.1-flash, deepseek-v4-pro, and deepseek-v4-flash-0731

deepseek-v4-pro excels at programming, math, and general tasks. deepseek-v4-flash-0731 is fast and cost-effective. We recommend that you prioritize using deepseek-v4-pro. For information about model context length and pricing, see the Model Studio console. Billing is based on the number of input and output tokens.

In thinking mode, the chain-of-thought is billed as output tokens.

FAQ

Can I upload images or documents to ask questions?

DeepSeek models support only text input, not image or document input. For image input, use the Qwen-VL model. For document input, use the Qwen-Long model.

How do I view token usage and the number of calls?

Within minutes after a model call occurs, you can view it in the monitoring charts. Log in to the Model Monitoring page. In the left navigation pane, select O&M Management > Model Monitoring to enter the monitoring overview page. Set the query conditions (for example, select the time range, workspace, etc.), then in the Models area, find the target model and click View Details to view the call statistics for the model. For more information, see the Model monitoring document.

Monitoring data is updated at minute-level and is for reference only. It is not used as a billing basis.

Error codes

If an error occurs during execution, see Error codes for a solution.

​Service endpoints

​Getting started

Sample code

Response

​Inference strength (reasoning_effort)

​Responses API

​Other features

​Default parameter values

​Models and billing

​FAQ

​Can I upload images or documents to ask questions?

​How do I view token usage and the number of calls?

​Error codes

Service endpoints

Getting started

Inference strength (reasoning_effort)

Responses API

Other features

Default parameter values

Models and billing

FAQ

Can I upload images or documents to ask questions?

How do I view token usage and the number of calls?

Error codes