Qwen Image Serverless API

Qwen-Image revolutionizes image generation and editing with seamless multilingual text integration and photorealistic detail.

~28.19s
POST /v2/qwen-image · submit + poll
 1# pip install "segmind>=1.1.0"
 2# export SEGMIND_API_KEY="YOUR_API_KEY"
 3import segmind
 4
 5# Async (v2): submit to the queue and block until COMPLETED.
 6# run() returns the final result dict (600s deadline, 1.0s poll by default).
 7result = segmind.run(
 8    "qwen-image",
 9    prompt="A mystical dragon hovering above a sparkling waterfall under a starry sky.",
10    negative_prompt="blurry, cartoonish",
11    steps=30,
12    seed=-1,
13    guidance=3.5,
14    aspect_ratio="16:9",
15    image_format="png",
16    quality=90,
17    base64=False,
18)
19print(result["status"])                      # COMPLETED
20print(result.get("output"))                  # model output (e.g. media URL)
21print(result["metrics"]["inference_time"])   # server compute seconds
22
23# --- Or submit + poll manually (track request_id, control the cadence) ---
24from segmind import SegmindClient, InferenceFailed, InferenceTimeout
25
26client = SegmindClient()                      # reads SEGMIND_API_KEY
27payload = {
28    "prompt": "A mystical dragon hovering above a sparkling waterfall under a starry sky.",
29    "negative_prompt": "blurry, cartoonish",
30    "steps": 30,
31    "seed": -1,
32    "guidance": 3.5,
33    "aspect_ratio": "16:9",
34    "image_format": "png",
35    "quality": 90,
36    "base64": False,
37}
38job = client.submit_async("qwen-image", **payload)
39print(job.request_id)                         # available immediately
40try:
41    result = job.wait(timeout=600, interval=1.0)
42except InferenceTimeout as e:
43    print("still running:", e.request_id)
44except InferenceFailed as e:
45    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/qwen-image

Parameters

promptrequired
string

Describe imaginative landscapes or detailed environments for image generation. Examples: 'A mystical dragon cave' or 'rustic mountain cabin'.

stepsrequired
integer

Number of steps for generating the image

Default: 30Range: 1 - 50
aspect_ratiooptional
string

Defines image proportion. Use 16:9 for cinematic, 1:1 for square formats.

Default: "16:9"
Allowed values :
"1:1""16:9""9:16""4:3""3:4""3:2""2:3"
base64optional
boolean

Outputs base64 image string. Enable for embedding, disable for files.

Default: false
guidanceoptional
number

Adjusts adherence to prompt. Set 2.5 for creativity, 5.0 for precision.

Default: 3.5Range: 1 - 20
image_formatoptional
string

Select image format. Use 'jpeg' for small files, 'png' for quality.

Default: "png"
Allowed values :
"png""jpeg""webp"
negative_promptoptional
string

Exclude elements to control results. Useful filters: 'blur' for clarity, 'cartoonish' for realism.

Default: "blurry, cartoonish"
qualityoptional
integer

Set clarity level. Choose 80 for web, 100 for print quality.

Default: 90Range: 10 - 100
seedoptional
integer

Determines image variation. Use -1 for unique images, fixed for repeatability.

Default: -1

Response Type

Returns: Text/JSON

Asynchronous requests (v2)

Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.

  1. 1
    POST /v2/qwen-image

    Submitreturns request_id, status_url, response_url

  2. 2
    GET /v2/requests/{id}/status

    Polluntil COMPLETED or FAILED

  3. 3
    GET /v2/requests/{id}

    Resultfinal response body

Status states

QUEUEDAccepted, waiting for a worker
PROCESSINGRunning on a worker
COMPLETEDDone — result body is ready
FAILEDErrored (incl. content/RAI blocks)
  • A FAILED request is served as HTTP 422 — the body still carries the error detail.
  • An unknown or expired request_id returns HTTP 404.
  • Results are retained for 1 hour, then expire.
  • Content / RAI blocks surface as FAILED, not a separate state.
  • Track completion by polling the status endpoint.

Common Error Codes

The API returns standard HTTP status codes. Detailed error messages are provided in the response body.

400

Bad Request

Invalid parameters or request format

401

Unauthorized

Missing or invalid API key

403

Forbidden

Insufficient permissions

404

Not Found

Model or endpoint not found

406

Insufficient Credits

Not enough credits to process request

429

Rate Limited

Too many requests

500

Server Error

Internal server error

502

Bad Gateway

Service temporarily unavailable

504

Timeout

Request timed out