GPT Image 2.5 Sunburst Serverless API

Precisely edit and generate images with legible in-image text.

POST /v2/gpt-image-2.5-sunburst · 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    "gpt-image-2.5-sunburst",
 9    prompt="A straight-down product still-life photograph on a brushed grey concrete surface. A glossy black vinyl record is half-slid out of a matte kraft-brown album sleeve. The sleeve is a modernist jazz cover: a large clean title 'MIDNIGHT LATITUDES' across the top in condensed sans-serif, an artist line 'The Corner Sessions Quartet' beneath it, and a five-song tracklist down the right edge reading '1. Blue Meridian  2. Harbor Lights  3. Slow Tide  4. Northbound  5. Last Call'. The record's cream paper center label reads 'SIDE A' with a catalog number 'CS-014'. Concentric grooves catch a low raking light; faint paper grain on the cardboard and light dust on the vinyl. Colour palette of deep teal, mustard and off-white.",
10    size="1536x1024",
11    quality="high",
12    background="opaque",
13    output_format="png",
14    output_compression=100,
15    moderation="auto",
16)
17print(result["status"])                      # COMPLETED
18print(result.get("output"))                  # model output (e.g. media URL)
19print(result["metrics"]["inference_time"])   # server compute seconds
20
21# --- Or submit + poll manually (track request_id, control the cadence) ---
22from segmind import SegmindClient, InferenceFailed, InferenceTimeout
23
24client = SegmindClient()                      # reads SEGMIND_API_KEY
25payload = {
26    "prompt": "A straight-down product still-life photograph on a brushed grey concrete surface. A glossy black vinyl record is half-slid out of a matte kraft-brown album sleeve. The sleeve is a modernist jazz cover: a large clean title 'MIDNIGHT LATITUDES' across the top in condensed sans-serif, an artist line 'The Corner Sessions Quartet' beneath it, and a five-song tracklist down the right edge reading '1. Blue Meridian  2. Harbor Lights  3. Slow Tide  4. Northbound  5. Last Call'. The record's cream paper center label reads 'SIDE A' with a catalog number 'CS-014'. Concentric grooves catch a low raking light; faint paper grain on the cardboard and light dust on the vinyl. Colour palette of deep teal, mustard and off-white.",
27    "size": "1536x1024",
28    "quality": "high",
29    "background": "opaque",
30    "output_format": "png",
31    "output_compression": 100,
32    "moderation": "auto",
33}
34job = client.submit_async("gpt-image-2.5-sunburst", **payload)
35print(job.request_id)                         # available immediately
36try:
37    result = job.wait(timeout=600, interval=1.0)
38except InferenceTimeout as e:
39    print("still running:", e.request_id)
40except InferenceFailed as e:
41    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/gpt-image-2.5-sunburst

Parameters

promptrequired
string

Text describing the image. Supports in-image typography across scripts — lead with subject, style, lighting.

Default: "A straight-down product still-life photograph on a brushed grey concrete surface. A glossy black vinyl record is half-slid out of a matte kraft-brown album sleeve. The sleeve is a modernist jazz cover: a large clean title 'MIDNIGHT LATITUDES' across the top in condensed sans-serif, an artist line 'The Corner Sessions Quartet' beneath it, and a five-song tracklist down the right edge reading '1. Blue Meridian 2. Harbor Lights 3. Slow Tide 4. Northbound 5. Last Call'. The record's cream paper center label reads 'SIDE A' with a catalog number 'CS-014'. Concentric grooves catch a low raking light; faint paper grain on the cardboard and light dust on the vinyl. Colour palette of deep teal, mustard and off-white."
backgroundoptional
string

"Opaque" renders a filled background; "Transparent" returns a PNG or WEBP with an alpha channel; "Auto" lets the model decide.

Default: "opaque"
Allowed values :
Opaque"opaque"
Transparent"transparent"
Auto"auto"
image_urlsoptional
string[]

Optional reference images to edit or draw context from. Providing any image switches to edit mode.

Default: []
mask_image_urloptional
string (uri)

Optional mask for surgical inpainting, used only alongside a reference image. Must be a PNG with an alpha channel, matching the reference image's dimensions: the transparent areas are regenerated, everything opaque stays pixel-perfect. A flat black-and-white mask with no alpha channel is rejected.

moderationoptional
string

Content filter strictness. "Auto" is the safe default.

Default: "auto"
Allowed values :
Low"low"
Auto"auto"
output_compressionoptional
integer

Compression level 0-100. 100 preserves text crispness; lower values reduce file size.

Default: 100Range: 0 - 100
output_formatoptional
string

"PNG" for crisp text, "WEBP" for smaller size, "JPEG" for broad compatibility.

Default: "png"
Allowed values :
PNG"png"
JPEG"jpeg"
WEBP"webp"
qualityoptional
string

Rendering fidelity. "High" keeps typography crisp; use lower values only for previews.

Default: "high"
Allowed values :
Low"low"
Medium"medium"
High"high"
Auto"auto"
sizeoptional
string

Output resolution (WIDTHxHEIGHT). Each edge must be a multiple of 16, aspect ratio between 1:3 and 3:1, longest edge at most 3840, and total pixels between 655,360 and 8,294,400. "Auto" lets the model pick.

Default: "1536x1024"
Allowed values (13 total):
"1024x1024""1536x1024""1024x1536""1280x960""960x1280""1536x864""864x1536""2048x2048""2048x1152""1152x2048"+3 more

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/gpt-image-2.5-sunburst

    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