flux-pro-1.1 Serverless API
Flux Pro 1.1 is a cutting-edge image generation tool offering exceptional speed, quality, and customization. Ideal for digital artists, designers, and content creators.
POST /v2/flux-1.1-pro · 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",
9 seed=12345,
10 width=1024,
11 height=1024,
12 prompt="A photo of an astronaut with a mirrored helmet standing in a field of sunflowers. The spacesuit has a NASA logo on it. The astronaut is covered in dirt and has vines wrapped around his body. The sky is dark and cloudy.",
13 aspect_ratio="1:1",
14 output_format="png",
15 output_quality=80,
16 safety_tolerance=2,
17 prompt_upsampling=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 "seed": 12345,
29 "width": 1024,
30 "height": 1024,
31 "prompt": "A photo of an astronaut with a mirrored helmet standing in a field of sunflowers. The spacesuit has a NASA logo on it. The astronaut is covered in dirt and has vines wrapped around his body. The sky is dark and cloudy.",
32 "aspect_ratio": "1:1",
33 "output_format": "png",
34 "output_quality": 80,
35 "safety_tolerance": 2,
36 "prompt_upsampling": False,
37}
38job = client.submit_async("flux-1.1-pro", **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) 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",
9 seed=12345,
10 width=1024,
11 height=1024,
12 prompt="A photo of an astronaut with a mirrored helmet standing in a field of sunflowers. The spacesuit has a NASA logo on it. The astronaut is covered in dirt and has vines wrapped around his body. The sky is dark and cloudy.",
13 aspect_ratio="1:1",
14 output_format="png",
15 output_quality=80,
16 safety_tolerance=2,
17 prompt_upsampling=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 "seed": 12345,
29 "width": 1024,
30 "height": 1024,
31 "prompt": "A photo of an astronaut with a mirrored helmet standing in a field of sunflowers. The spacesuit has a NASA logo on it. The astronaut is covered in dirt and has vines wrapped around his body. The sky is dark and cloudy.",
32 "aspect_ratio": "1:1",
33 "output_format": "png",
34 "output_quality": 80,
35 "safety_tolerance": 2,
36 "prompt_upsampling": False,
37}
38job = client.submit_async("flux-1.1-pro", **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
https://api.segmind.com/v1/flux-1.1-proParameters
promptrequiredstringText prompt for image generation
"A photo of an astronaut with a mirrored helmet standing in a field of sunflowers. The spacesuit has a NASA logo on it. The astronaut is covered in dirt and has vines wrapped around his body. The sky is dark and cloudy."aspect_ratiooptionalstringAn enumeration.
"1:1""custom""1:1""16:9""2:3""3:2""4:5""5:4""9:16""3:4""4:3"heightoptionalintegerHeight of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 16 (if it's not, it will be rounded to nearest multiple of 16). Note: Ignored in img2img and inpainting modes.
1024Range: 256 - 1440image_promptoptionalstring (uri)Provide the URL of the image to be relit. Use a URL from cloud storage like S3.
output_formatoptionalstringAn enumeration.
"webp""webp""jpg""png"output_qualityoptionalintegerQuality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs
80Range: 0 - 100prompt_upsamplingoptionalbooleanAutomatically modify the prompt for more creative generation
falsesafety_toleranceoptionalintegerSafety tolerance, 1 is most strict and 5 is most permissive
2Range: 1 - 5seedoptionalintegerRandom seed. Set for reproducible generation
nullwidthoptionalintegerWidth of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 16 (if it's not, it will be rounded to nearest multiple of 16). Note: Ignored in img2img and inpainting modes.
1024Range: 256 - 1440Response 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-proSubmit — 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