Luma Uni-1 API

Reasoning-first text-to-image and natural-language image editing.

PlaygroundAPI
Pricing
~79.85s
POST /v2/luma-uni-1 · 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    "luma-uni-1",
 9    prompt="Change the sky to a dramatic sunset with warm orange and pink clouds, keep the town, boats, harbor and water unchanged",
10    image="https://segmind-resources.s3.amazonaws.com/input/luma-uni-1-input.jpg",
11    aspect_ratio="16:9",
12    style="auto",
13)
14print(result["status"])                      # COMPLETED
15print(result.get("output"))                  # model output (e.g. media URL)
16print(result["metrics"]["inference_time"])   # server compute seconds
17
18# --- Or submit + poll manually (track request_id, control the cadence) ---
19from segmind import SegmindClient, InferenceFailed, InferenceTimeout
20
21client = SegmindClient()                      # reads SEGMIND_API_KEY
22payload = {
23    "prompt": "Change the sky to a dramatic sunset with warm orange and pink clouds, keep the town, boats, harbor and water unchanged",
24    "image": "https://segmind-resources.s3.amazonaws.com/input/luma-uni-1-input.jpg",
25    "aspect_ratio": "16:9",
26    "style": "auto",
27}
28job = client.submit_async("luma-uni-1", **payload)
29print(job.request_id)                         # available immediately
30try:
31    result = job.wait(timeout=600, interval=1.0)
32except InferenceTimeout as e:
33    print("still running:", e.request_id)
34except InferenceFailed as e:
35    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/luma-uni-1

Parameters

promptrequired
string

Edit instruction or scene description in plain English. Name regions to keep for clean local edits.

Default: "Change the sky to a dramatic sunset with warm orange and pink clouds, keep the town, boats, harbor and water unchanged"
aspect_ratiooptional
string

Output shape from nine presets. Use 16:9 for banners, 9:16 for mobile, 1:1 social.

Default: "16:9"
Allowed values :
"16:9""1:1""1:2""1:3""2:1""2:3""3:1""3:2""9:16"
imageoptional
string (uri)

Optional source image URL to edit; omit for pure text-to-image. Provide an image to transform it.

Default: "https://segmind-resources.s3.amazonaws.com/input/luma-uni-1-input.jpg"
styleoptional
string

Style preset, auto or manga. Pick manga for comic, webtoon and anime looks.

Default: "auto"
Allowed values :
"auto""manga"

Response 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. 1
    POST /v2/luma-uni-1

    Submit — returns request_id, status_url, response_url

  2. 2
    GET /v2/requests/{id}/status

    Poll — until COMPLETED or FAILED

  3. 3
    GET /v2/requests/{id}

    Result — final response body

Status states

QUEUED— Accepted, waiting for a worker
PROCESSING— Running on a worker
COMPLETED— Done — result body is ready
FAILED— Errored (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