Flux-1.1 Pro Ultra Serverless API
Create stunning visuals effortlessly with Flux 1.1 Pro Ultra. Experience unparalleled image quality and speed.
POST /v2/flux-1.1-pro-ultra · 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 "flux-1.1-pro-ultra",
9 raw=False,
10 seed=1234,
11 prompt="A luxurious, modern living room with a grand fireplace as the centerpiece. Large windows look out onto a dark, rainy night, where wet tree branches glisten under the night sky. The room is decorated with plush, dark blue sofas and warm amber lighting that casts a cozy glow, contrasting with the cool, moody weather outside. The floor is a polished dark wood, and raindrops gently streak down the windows, enhancing the atmosphere of comfort and serenity.",
12 aspect_ratio="1:1",
13 output_format="jpg",
14 safety_tolerance=2,
15)
16print(result["status"]) # COMPLETED
17print(result.get("output")) # model output (e.g. media URL)
18print(result["metrics"]["inference_time"]) # server compute seconds
19
20# --- Or submit + poll manually (track request_id, control the cadence) ---
21from segmind import SegmindClient, InferenceFailed, InferenceTimeout
22
23client = SegmindClient() # reads SEGMIND_API_KEY
24payload = {
25 "raw": False,
26 "seed": 1234,
27 "prompt": "A luxurious, modern living room with a grand fireplace as the centerpiece. Large windows look out onto a dark, rainy night, where wet tree branches glisten under the night sky. The room is decorated with plush, dark blue sofas and warm amber lighting that casts a cozy glow, contrasting with the cool, moody weather outside. The floor is a polished dark wood, and raindrops gently streak down the windows, enhancing the atmosphere of comfort and serenity.",
28 "aspect_ratio": "1:1",
29 "output_format": "jpg",
30 "safety_tolerance": 2,
31}
32job = client.submit_async("flux-1.1-pro-ultra", **payload)
33print(job.request_id) # available immediately
34try:
35 result = job.wait(timeout=600, interval=1.0)
36except InferenceTimeout as e:
37 print("still running:", e.request_id)
38except InferenceFailed as e:
39 print("failed:", e.detail) 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 "flux-1.1-pro-ultra",
9 raw=False,
10 seed=1234,
11 prompt="A luxurious, modern living room with a grand fireplace as the centerpiece. Large windows look out onto a dark, rainy night, where wet tree branches glisten under the night sky. The room is decorated with plush, dark blue sofas and warm amber lighting that casts a cozy glow, contrasting with the cool, moody weather outside. The floor is a polished dark wood, and raindrops gently streak down the windows, enhancing the atmosphere of comfort and serenity.",
12 aspect_ratio="1:1",
13 output_format="jpg",
14 safety_tolerance=2,
15)
16print(result["status"]) # COMPLETED
17print(result.get("output")) # model output (e.g. media URL)
18print(result["metrics"]["inference_time"]) # server compute seconds
19
20# --- Or submit + poll manually (track request_id, control the cadence) ---
21from segmind import SegmindClient, InferenceFailed, InferenceTimeout
22
23client = SegmindClient() # reads SEGMIND_API_KEY
24payload = {
25 "raw": False,
26 "seed": 1234,
27 "prompt": "A luxurious, modern living room with a grand fireplace as the centerpiece. Large windows look out onto a dark, rainy night, where wet tree branches glisten under the night sky. The room is decorated with plush, dark blue sofas and warm amber lighting that casts a cozy glow, contrasting with the cool, moody weather outside. The floor is a polished dark wood, and raindrops gently streak down the windows, enhancing the atmosphere of comfort and serenity.",
28 "aspect_ratio": "1:1",
29 "output_format": "jpg",
30 "safety_tolerance": 2,
31}
32job = client.submit_async("flux-1.1-pro-ultra", **payload)
33print(job.request_id) # available immediately
34try:
35 result = job.wait(timeout=600, interval=1.0)
36except InferenceTimeout as e:
37 print("still running:", e.request_id)
38except InferenceFailed as e:
39 print("failed:", e.detail)API Endpoint
https://api.segmind.com/v1/flux-1.1-pro-ultraParameters
promptrequiredstringText prompt for image generation
"A luxurious, modern living room with a grand fireplace as the centerpiece. Large windows look out onto a dark, rainy night, where wet tree branches glisten under the night sky. The room is decorated with plush, dark blue sofas and warm amber lighting that casts a cozy glow, contrasting with the cool, moody weather outside. The floor is a polished dark wood, and raindrops gently streak down the windows, enhancing the atmosphere of comfort and serenity."aspect_ratiooptionalstringAspect ratio for the generated image.
"1:1""21:9""16:9""3:2""4:3""5:4""1:1""4:5""3:4""2:3""9:16"+1 moreimage_promptoptionalstring (uri)Provide the URL of the image to be relit. Use a URL from cloud storage like S3.
output_formatoptionalstringFormat of the output images.
"jpg""jpg""png"rawoptionalbooleanGenerate less processed, more natural-looking images
falsesafety_toleranceoptionalintegerSafety tolerance, 1 is most strict and 6 is most permissive
2Range: 1 - 6seedoptionalintegerRandom seed. Set for reproducible generation
1234Response 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
POST /v2/flux-1.1-pro-ultraSubmit — returns request_id, status_url, response_url
- 2
GET /v2/requests/{id}/statusPoll — until COMPLETED or FAILED
- 3
GET /v2/requests/{id}Result — final response body
Status states
- 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.
Bad Request
Invalid parameters or request format
Unauthorized
Missing or invalid API key
Forbidden
Insufficient permissions
Not Found
Model or endpoint not found
Insufficient Credits
Not enough credits to process request
Rate Limited
Too many requests
Server Error
Internal server error
Bad Gateway
Service temporarily unavailable
Timeout
Request timed out