Flux 2 Pro Serverless API
High-quality photorealistic images with cross-output consistency.
POST /v2/flux-2-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-2-pro",
9 prompt="Iridescent neon 3D letters in sapphire blue, ultraviolet purple, and laser-green glowing against a futuristic dusk skyline. Set on a rooftop helipad with brushed-steel textures, holographic signage, and soft under-lighting. Shot on Fuji Velvia with a Mamiya RZ67 — crisp contrast, cool-magenta twilight tones, and a cinematic cyber-noir atmosphere. Subtle chromatic aberration, gentle bokeh from distant city lights, and a faint blue lens flare sweeping across the frame. Sleek air-drones drift in the background above a neon-lined metropolis, while the glossy letters in the foreground spell out “Try FLUX.2 Pro on Segmind!”",
10 seed=42,
11 width=1024,
12 height=1024,
13 safety_tolerance=3,
14 output_format="png",
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 "prompt": "Iridescent neon 3D letters in sapphire blue, ultraviolet purple, and laser-green glowing against a futuristic dusk skyline. Set on a rooftop helipad with brushed-steel textures, holographic signage, and soft under-lighting. Shot on Fuji Velvia with a Mamiya RZ67 — crisp contrast, cool-magenta twilight tones, and a cinematic cyber-noir atmosphere. Subtle chromatic aberration, gentle bokeh from distant city lights, and a faint blue lens flare sweeping across the frame. Sleek air-drones drift in the background above a neon-lined metropolis, while the glossy letters in the foreground spell out “Try FLUX.2 Pro on Segmind!”",
26 "seed": 42,
27 "width": 1024,
28 "height": 1024,
29 "safety_tolerance": 3,
30 "output_format": "png",
31}
32job = client.submit_async("flux-2-pro", **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-2-pro",
9 prompt="Iridescent neon 3D letters in sapphire blue, ultraviolet purple, and laser-green glowing against a futuristic dusk skyline. Set on a rooftop helipad with brushed-steel textures, holographic signage, and soft under-lighting. Shot on Fuji Velvia with a Mamiya RZ67 — crisp contrast, cool-magenta twilight tones, and a cinematic cyber-noir atmosphere. Subtle chromatic aberration, gentle bokeh from distant city lights, and a faint blue lens flare sweeping across the frame. Sleek air-drones drift in the background above a neon-lined metropolis, while the glossy letters in the foreground spell out “Try FLUX.2 Pro on Segmind!”",
10 seed=42,
11 width=1024,
12 height=1024,
13 safety_tolerance=3,
14 output_format="png",
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 "prompt": "Iridescent neon 3D letters in sapphire blue, ultraviolet purple, and laser-green glowing against a futuristic dusk skyline. Set on a rooftop helipad with brushed-steel textures, holographic signage, and soft under-lighting. Shot on Fuji Velvia with a Mamiya RZ67 — crisp contrast, cool-magenta twilight tones, and a cinematic cyber-noir atmosphere. Subtle chromatic aberration, gentle bokeh from distant city lights, and a faint blue lens flare sweeping across the frame. Sleek air-drones drift in the background above a neon-lined metropolis, while the glossy letters in the foreground spell out “Try FLUX.2 Pro on Segmind!”",
26 "seed": 42,
27 "width": 1024,
28 "height": 1024,
29 "safety_tolerance": 3,
30 "output_format": "png",
31}
32job = client.submit_async("flux-2-pro", **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-2-proParameters
image_urlsrequiredstring[]Provide URLs for reference images. Ensure URLs are valid and image quality is high.
promptrequiredstringText prompt guides image creation. Use descriptive phrases for detailed images.
"Iridescent neon 3D letters in sapphire blue, ultraviolet purple, and laser-green glowing against a futuristic dusk skyline. Set on a rooftop helipad with brushed-steel textures, holographic signage, and soft under-lighting. Shot on Fuji Velvia with a Mamiya RZ67 — crisp contrast, cool-magenta twilight tones, and a cinematic cyber-noir atmosphere. Subtle chromatic aberration, gentle bokeh from distant city lights, and a faint blue lens flare sweeping across the frame. Sleek air-drones drift in the background above a neon-lined metropolis, while the glossy letters in the foreground spell out “Try FLUX.2 Pro on Segmind!”"heightoptionalintegerSet image height. Adjust based on aspect ratio needs or desired output dimension.
1024output_formatoptionalstringChoose image format. Use 'jpeg' for quality, 'png' for transparency.
"png""jpeg""png"safety_toleranceoptionalintegerAdjust safety levels for moderation. Higher values for stricter checking.
3Range: 0 - 6seedoptionalintegerSeed allows image reproducibility. Use specific numbers for consistency, random for variety.
42widthoptionalintegerSet image width. Use larger sizes for detail, smaller for quick generation.
1024Response Type
Returns: Image
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-2-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