The Qwen Image Generation and Editing 3.0 model supports both text-to-image (T2I) and image-to-image/image editing (I2I). It can generate images directly from text prompts or edit images based on 1-3 reference images combined with editing instructions.
Model overview
Model | Description | Output image specifications |
|---|---|---|
qwen-image-3.0-pro | Qwen Image Generation and Editing 3.0 model that supports both text-to-image (T2I) and image-to-image/image editing (I2I). | Image resolution:
Image format: PNG |
qwen-image-3.0 | Qwen Image Generation and Editing 3.0 standard model that supports both text-to-image (T2I) and image-to-image/image editing (I2I). Balances quality and speed. |
Availability
The model, endpoint URL, and API key must belong to the same region. Cross-region calls fail.
- Select a model: Verify that the model is available in your target region.
- Select a URL: Choose the endpoint URL that matches your model's region. Both HTTP and DashScope SDK URLs are supported.
- Configure an API key: Get an API key for the region, and then configure the API key as an environment variable.
- Install the SDK: To make API calls with the SDK, install the DashScope SDK.
NoteThe sample code in this topic applies to the Singapore region.
ImportantAlibaba Cloud Model Studio has released workspace-specific domains for the China (Beijing) and Singapore regions. The new dedicated domains deliver superior performance and higher stability for inference requests. We recommend migrating to the new domains:
- China (Beijing): from
https://dashscope.aliyuncs.comtohttps://{WorkspaceId}.cn-beijing.maas.aliyuncs.com - Singapore: from
https://dashscope-intl.aliyuncs.comtohttps://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com
{WorkspaceId} is your workspace ID, which can be found on the Workspace Details page in the Alibaba Cloud Model Studio console. The existing domain remains fully functional.
Synchronous API (recommended)
HTTP
Singapore
POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
China (Beijing)
POST https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
China (Hong Kong)
POST https://{WorkspaceId}.cn-hongkong.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
Germany (Frankfurt)
POST https://{WorkspaceId}.eu-central-1.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
Japan (Tokyo)
POST https://{WorkspaceId}.ap-northeast-1.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
Replace {WorkspaceId} with your actual workspace ID.
Request parametersHeadersContent-Type The content type of the request. Must be Authorization Authenticates the request with a Model Studio API key. Example: Bearer sk-xxxx. Request bodymodel The model name. Available values: input The input parameter object, which contains the following fields: parameters Additional parameters to control image generation. | |
Response parametersoutput Contains the model generation results. usage The resource usage of this call. Only returned on success. request_id Unique request identifier for tracing and troubleshooting. code Error code. Returned only for failed requests. See Error codes. message Detailed error message. Returned only for failed requests. See Error codes. | SuccessTask data (task status and image URLs) is retained for only 24 hours and then automatically purged. Save generated images promptly. ErrorIf the task fails, the response includes the error code and message. See Error codes for troubleshooting. |
SDK
The following examples demonstrate how to call the API using Python and Java SDKs for image-to-image / image editing (I2I).
import os
import base64
import mimetypes
import dashscope
from dashscope import MultiModalConversation
dashscope.base_http_api_url = 'https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1'
def encode_file(file_path):
mime_type, _ = mimetypes.guess_type(file_path)
if not mime_type or not mime_type.startswith("image/"):
raise ValueError("Unsupported or unrecognized image format")
with open(file_path, "rb") as image_file:
encoded_string = base64.b64encode(image_file.read()).decode('utf-8')
return f"data:{mime_type};base64,{encoded_string}"
# [Method 1] Use a public image URL
image_url = "https://alidocs.oss-cn-zhangjiakou.aliyuncs.com/res/yBRq1ZPYEaXdyOdv/img/33a80a19-7ac7-4c64-b0fa-7d685b7046a0.png"
# [Method 2] Use a Base64-encoded image
# image_url = encode_file("./your_image.png")
response = MultiModalConversation.call(
api_key=os.getenv("DASHSCOPE_API_KEY"),
model="qwen-image-3.0-pro",
messages=[{
"role": "user",
"content": [
{"image": image_url},
{"text": "Generate a sophisticated urban-style female portrait. Perfectly preserve the facial features and smooth black long hair of the young woman in the input image. Change her outfit to an elegant urban professional look. Set the scene in a modern minimalist upscale coffee shop."}
]
}],
prompt_extend=True
)
print(response)
if response.status_code == 200:
url = response.output.choices[0].message.content[0]["image"]
print(f"Generated image URL: {url}")
else:
print(f"Error: {response.code} - {response.message}")
import java.util.Arrays;
import java.util.Base64;
import java.util.Collections;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversation;
import com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversationParam;
import com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversationResult;
import com.alibaba.dashscope.common.MultiModalMessage;
import com.alibaba.dashscope.common.Role;
import com.alibaba.dashscope.utils.Constants;
public class ImageEditExample {
public static void main(String[] args) {
Constants.baseHttpApiUrl = "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1";
// [Method 1] Use a public image URL
String imageUrl = "https://alidocs.oss-cn-zhangjiakou.aliyuncs.com/res/yBRq1ZPYEaXdyOdv/img/33a80a19-7ac7-4c64-b0fa-7d685b7046a0.png";
// [Method 2] Use a Base64-encoded image
// String imageUrl = encodeFile("/path/to/your/image.png");
MultiModalConversation conv = new MultiModalConversation();
MultiModalMessage userMessage = MultiModalMessage.builder()
.role(Role.USER.getValue())
.content(Arrays.asList(
Collections.singletonMap("image", imageUrl),
Collections.singletonMap("text", "Generate a sophisticated urban-style female portrait. Perfectly preserve the facial features and smooth black long hair of the young woman in the input image. Change her outfit to an elegant urban professional look. Set the scene in a modern minimalist upscale coffee shop.")
))
.build();
MultiModalConversationParam param = MultiModalConversationParam.builder()
.apiKey(System.getenv("DASHSCOPE_API_KEY"))
.model("qwen-image-3.0-pro")
.messages(Arrays.asList(userMessage))
.parameter("prompt_extend", true)
.build();
try {
MultiModalConversationResult result = conv.call(param);
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
public static String encodeFile(String filePath) {
Path path = Paths.get(filePath);
if (!Files.exists(path)) {
throw new IllegalArgumentException("File does not exist: " + filePath);
}
String mimeType = null;
try {
mimeType = Files.probeContentType(path);
} catch (IOException e) {
throw new IllegalArgumentException("Cannot detect file type: " + filePath);
}
if (mimeType == null || !mimeType.startsWith("image/")) {
throw new IllegalArgumentException("Unsupported or unrecognized image format");
}
byte[] fileBytes = null;
try {
fileBytes = Files.readAllBytes(path);
} catch (IOException e) {
throw new IllegalArgumentException("Cannot read file content: " + filePath);
}
String encodedString = Base64.getEncoder().encodeToString(fileBytes);
return "data:" + mimeType + ";base64," + encodedString;
}
}
Asynchronous API
In addition to the synchronous call described above, Qwen Image Generation and Editing 3.0 also supports asynchronous calls. The asynchronous API shares the same request parameter structure as the synchronous API. You only need to add the X-DashScope-Async: enable header. After the service accepts the request, it returns a task ID (task_id), which you then use to poll the query API for the final result.
ImportantThe endpoint for the asynchronous API differs from the synchronous API. Use the endpoints in this section instead of the synchronous endpoint.
HTTP
Asynchronous calls use a two-step workflow:
- Create a task to get a task ID: Send a request to create a task. The response contains a task ID (task_id).
- Poll for results using the task ID: Use the task_id to poll the task status until the task completes and the image URL is returned.
Step 1: Create a task to get a task ID
Singapore
POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1/services/aigc/image-generation/generation
China (Beijing)
POST https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1/services/aigc/image-generation/generation
China (Hong Kong)
POST https://{WorkspaceId}.cn-hongkong.maas.aliyuncs.com/api/v1/services/aigc/image-generation/generation
Germany (Frankfurt)
POST https://{WorkspaceId}.eu-central-1.maas.aliyuncs.com/api/v1/services/aigc/image-generation/generation
Japan (Tokyo)
POST https://{WorkspaceId}.ap-northeast-1.maas.aliyuncs.com/api/v1/services/aigc/image-generation/generation
Request parametersHeadersContent-Type The content type of the request. Must be Authorization Authenticates the request with a Model Studio API key. Example: Bearer sk-xxxx. X-DashScope-Async Enables asynchronous processing. HTTP requests support only asynchronous calls. Must be ImportantIf this request header is missing, the error "current user api does not support synchronous calls" is returned. Request bodymodel The model name. Available values: input The input parameter object, which contains the following fields: parameters Additional parameters to control image generation. | |
Response parametersoutput The task acceptance information. request_id Unique request identifier for tracing and troubleshooting. code Error code. Returned only for failed requests. See Error codes. | Successful responseSave the Error responseTask creation failed. See Error codes. |
Step 2: Poll for results using the task ID
Singapore
GET https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1/tasks/{task_id}
China (Beijing)
GET https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1/tasks/{task_id}
China (Hong Kong)
GET https://{WorkspaceId}.cn-hongkong.maas.aliyuncs.com/api/v1/tasks/{task_id}
Germany (Frankfurt)
GET https://{WorkspaceId}.eu-central-1.maas.aliyuncs.com/api/v1/tasks/{task_id}
Japan (Tokyo)
GET https://{WorkspaceId}.ap-northeast-1.maas.aliyuncs.com/api/v1/tasks/{task_id}
You must use the same region, workspace, and API key as when you created the task. Cross-region or cross-workspace queries are not supported.
Request parametersHeadersAuthorization Authenticates the request with a Model Studio API key. Example: Bearer sk-xxxx. URL path parameterstask_id The ID of the task. | Query task resultReplace |
Response parametersoutput The task output information. usage The resource usage of this call. Only returned on success. request_id Unique request identifier for tracing and troubleshooting. code Error code. Returned only for failed requests. See Error codes. message Detailed error message. Returned only for failed requests. See Error codes. | Task succeededTask data (task status and image URLs) is retained for only 24 hours and then automatically purged. Save generated images promptly. Task failedWhen a task fails, |
Error codes
If the model call fails and returns an error message, see Error codes for resolution.