Krea 3 Text to Image API

Text-to-image at native 2K with a high thinking mode.

PlaygroundAPI
Pricing
~20.65s
POST /v2/krea-3-text-to-image · 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    "krea-3-text-to-image",
 9    prompt="Roller derby jam on a banked wooden track: a jammer in a star-marked helmet cover bursts through a wall of three blockers, one blocker sliding on a knee pad. Roster numbers printed large on their arms and mesh tank jerseys read '07', '22', and '14'. Motion blur streaks off the spinning wheels while the skaters' bodies stay sharp; sweat, scuffed floor tape, taped-up pads. Direct on-camera flash, dark packed crowd behind, 35mm documentary sports photograph.",
10    resolution="2k",
11    aspect_ratio="3:2",
12    thinking_mode="high",
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": "Roller derby jam on a banked wooden track: a jammer in a star-marked helmet cover bursts through a wall of three blockers, one blocker sliding on a knee pad. Roster numbers printed large on their arms and mesh tank jerseys read '07', '22', and '14'. Motion blur streaks off the spinning wheels while the skaters' bodies stay sharp; sweat, scuffed floor tape, taped-up pads. Direct on-camera flash, dark packed crowd behind, 35mm documentary sports photograph.",
24    "resolution": "2k",
25    "aspect_ratio": "3:2",
26    "thinking_mode": "high",
27}
28job = client.submit_async("krea-3-text-to-image", **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/krea-3-text-to-image

Parameters

promptrequired
string

Describe subject, composition, lighting and style.

Default: "Studio product shot of cream knit sneakers floating above a still water surface, smooth river stones around them, soft diffused light, shallow depth of field"
aspect_ratiooptional
string

auto lets the model choose. Pick a fixed ratio for a known canvas.

Default: "auto"
Allowed values (11 total):
"auto""1:1""4:5""3:4""2:3""9:16""5:4""4:3""3:2""16:9"+1 more
resolutionoptional
string

Output size tier (equal pixel area; exact dimensions follow the aspect ratio). Price scales with the tier.

Default: "1k"
Allowed values :
1k (about 1 MP)→"1k"
2k (about 4 MP)→"2k"
seedoptional
integer

Fix for repeatable results; leave empty for a random seed.

thinking_modeoptional
string

fast for speed; high spends longer reasoning about the prompt before rendering.

Default: "fast"
Allowed values :
"fast""high"

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/krea-3-text-to-image

    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