Flux .1 Pro Serverless API
Flux Pro is a state-of-the-art image generation with top of the line prompt following, visual quality, image detail and output diversity.
POST /v2/flux-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-pro",
9 prompt="A mesmerizing 4D rendering illustration masterpiece, capturing the name '1 million users congratulations'under in a captivating, dripping, melting style. The bright, bold white letters are illuminated with vivid hues and emit a whimsical, fun movement. The surrounding abstract shapes, splashes, and drops in various bright colors add to the dynamic atmosphere. The pristine white background contrasts with the bold, striking colors of the text and its surroundings, showcasing the artist's exceptional skills in 3D rendering and illustration. The artist's innovative fusion of typography, 3D rendering, and illustration results in an awe-inspiring piece that is visually stunning, transcending the boundaries of painting, 3D rendering, and vibrant typography., 3d render",
10 guidance=3,
11 steps=25,
12 interval=2,
13 safety_tolerance=2,
14 aspect_ratio="1:1",
15 seed=46588,
16 output_format="webp",
17 output_quality=80,
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 mesmerizing 4D rendering illustration masterpiece, capturing the name '1 million users congratulations'under in a captivating, dripping, melting style. The bright, bold white letters are illuminated with vivid hues and emit a whimsical, fun movement. The surrounding abstract shapes, splashes, and drops in various bright colors add to the dynamic atmosphere. The pristine white background contrasts with the bold, striking colors of the text and its surroundings, showcasing the artist's exceptional skills in 3D rendering and illustration. The artist's innovative fusion of typography, 3D rendering, and illustration results in an awe-inspiring piece that is visually stunning, transcending the boundaries of painting, 3D rendering, and vibrant typography., 3d render",
29 "guidance": 3,
30 "steps": 25,
31 "interval": 2,
32 "safety_tolerance": 2,
33 "aspect_ratio": "1:1",
34 "seed": 46588,
35 "output_format": "webp",
36 "output_quality": 80,
37}
38job = client.submit_async("flux-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-pro",
9 prompt="A mesmerizing 4D rendering illustration masterpiece, capturing the name '1 million users congratulations'under in a captivating, dripping, melting style. The bright, bold white letters are illuminated with vivid hues and emit a whimsical, fun movement. The surrounding abstract shapes, splashes, and drops in various bright colors add to the dynamic atmosphere. The pristine white background contrasts with the bold, striking colors of the text and its surroundings, showcasing the artist's exceptional skills in 3D rendering and illustration. The artist's innovative fusion of typography, 3D rendering, and illustration results in an awe-inspiring piece that is visually stunning, transcending the boundaries of painting, 3D rendering, and vibrant typography., 3d render",
10 guidance=3,
11 steps=25,
12 interval=2,
13 safety_tolerance=2,
14 aspect_ratio="1:1",
15 seed=46588,
16 output_format="webp",
17 output_quality=80,
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 mesmerizing 4D rendering illustration masterpiece, capturing the name '1 million users congratulations'under in a captivating, dripping, melting style. The bright, bold white letters are illuminated with vivid hues and emit a whimsical, fun movement. The surrounding abstract shapes, splashes, and drops in various bright colors add to the dynamic atmosphere. The pristine white background contrasts with the bold, striking colors of the text and its surroundings, showcasing the artist's exceptional skills in 3D rendering and illustration. The artist's innovative fusion of typography, 3D rendering, and illustration results in an awe-inspiring piece that is visually stunning, transcending the boundaries of painting, 3D rendering, and vibrant typography., 3d render",
29 "guidance": 3,
30 "steps": 25,
31 "interval": 2,
32 "safety_tolerance": 2,
33 "aspect_ratio": "1:1",
34 "seed": 46588,
35 "output_format": "webp",
36 "output_quality": 80,
37}
38job = client.submit_async("flux-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-proParameters
promptrequiredstringText prompt for image generation
"A mesmerizing 4D rendering illustration masterpiece, capturing the name '1 million users congratulations'under in a captivating, dripping, melting style. The bright, bold white letters are illuminated with vivid hues and emit a whimsical, fun movement. The surrounding abstract shapes, splashes, and drops in various bright colors add to the dynamic atmosphere. The pristine white background contrasts with the bold, striking colors of the text and its surroundings, showcasing the artist's exceptional skills in 3D rendering and illustration. The artist's innovative fusion of typography, 3D rendering, and illustration results in an awe-inspiring piece that is visually stunning, transcending the boundaries of painting, 3D rendering, and vibrant typography., 3d render"aspect_ratiooptionalstringType of scheduler.
"""1:1""16:9""21:9""2:3""3:2""4:5""5:4""9:16""9:21"guidanceoptionalintegerguidance
3Range: 2 - 5intervaloptionalintegerinterval
2Range: 1 - 4output_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 - 100safety_toleranceoptionalintegersafety tolerance
2Range: 1 - 5seedoptionalintegerSeed for random number generation
46588stepsoptionalintegernumber of steps
25Range: 1 - 50Response 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-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