Flux Realism Lora with Upscale Serverless API

Flux Realism Lora with upscale, developed by XLabs AI is a cutting-edge model designed to generate realistic images from textual descriptions.

~38.16s
POST /v2/flux-realism-lora · 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-realism-lora",
 9    prompt="a young woman smiling while speaking onstage from segmind, white background with corporate logos blurred out, tech conference",
10    steps=20,
11    seed=6652105,
12    scheduler="simple",
13    sampler_name="euler",
14    aspect_ratio="2:3",
15    width=1024,
16    height=1024,
17    upscale_value=2,
18    lora_strength=0.8,
19    samples=1,
20    upscale=False,
21)
22print(result["status"])                      # COMPLETED
23print(result.get("output"))                  # model output (e.g. media URL)
24print(result["metrics"]["inference_time"])   # server compute seconds
25
26# --- Or submit + poll manually (track request_id, control the cadence) ---
27from segmind import SegmindClient, InferenceFailed, InferenceTimeout
28
29client = SegmindClient()                      # reads SEGMIND_API_KEY
30payload = {
31    "prompt": "a young woman smiling while speaking onstage from segmind, white background with corporate logos blurred out, tech conference",
32    "steps": 20,
33    "seed": 6652105,
34    "scheduler": "simple",
35    "sampler_name": "euler",
36    "aspect_ratio": "2:3",
37    "width": 1024,
38    "height": 1024,
39    "upscale_value": 2,
40    "lora_strength": 0.8,
41    "samples": 1,
42    "upscale": False,
43}
44job = client.submit_async("flux-realism-lora", **payload)
45print(job.request_id)                         # available immediately
46try:
47    result = job.wait(timeout=600, interval=1.0)
48except InferenceTimeout as e:
49    print("still running:", e.request_id)
50except InferenceFailed as e:
51    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/flux-realism-lora

Parameters

promptrequired
string

Text prompt for generating the image

Default: "a young woman smiling while speaking onstage from segmind, white background with corporate logos blurred out, tech conference"
aspect_ratiooptional
string

Aspect ratio for the generated image

Default: "2:3"
Allowed values (14 total):
"null""1:1""2:3""3:4""5:8""9:16""9:19""9:21""3:2""4:3"+4 more
heightoptional
integer

To enable custom image height, choose 'null' in the aspect ratio option.

Default: 1024Range: 64 - 4096
lora_strengthoptional
number

Strength of the LoRA (Low-Rank Adaptation) for fine-tuning

Default: 0.8Range: -10 - 10
sampler_nameoptional
string

Sampler type for image generation

Default: "euler"
Allowed values (26 total):
"euler""euler_pp""euler_ancestral""euler_ancestral_pp""heun""heunpp2""dpm_2""dpm_2_ancestral""lms""dpm_fast"+16 more
samplesoptional
integer

Number of samples to generate

Default: 1Range: 1 - 4
scheduleroptional
string

Scheduler type for image generation

Default: "simple"
Allowed values :
"normal""karras""exponential""sgm_uniform""simple""ddim_uniform""beta"
seedoptional
integer

Seed for random number generation

Default: 6652105
stepsoptional
integer

Number of steps for generating the image

Default: 20Range: 1 - 100
upscaleoptional
boolean

Whether to upscale the image or not

Default: false
upscale_valueoptional
integer

Value by which to upscale the image

Default: 2Range: 1 - 3
widthoptional
integer

To enable custom image width, choose 'null' in the aspect ratio option.

Default: 1024Range: 64 - 4096

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/flux-realism-lora

    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