MiniMax H3 Text to Image API
Render legible in-image text at native 4K.
POST /v2/minimax-h3-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 "minimax-h3-text-to-image",
9 prompt="A straight-on view of a Victorian herbalist's cabinet: a grid of small oak drawers, each with a round brass cup handle and a cream card label in a brass frame. The front labels read 'VALERIANA', 'LAVANDULA', 'CALENDULA' and 'ARNICA' in black serif capitals. A hand-painted wooden header board above the drawers reads 'HOLLOWAY HERBALIST' with 'EST. 1894' beneath in gold leaf. A brass mortar and pestle and a set of apothecary scales rest on the counter below. Even daylight from a side window, aged wood grain and tarnished brass.",
10 speed="standard",
11 num_images=1,
12 area="4K",
13 aspect_ratio="4:3",
14)
15print(result["status"]) # COMPLETED
16print(result.get("output")) # model output (e.g. media URL)
17print(result["metrics"]["inference_time"]) # server compute seconds
18
19# --- Or submit + poll manually (track request_id, control the cadence) ---
20from segmind import SegmindClient, InferenceFailed, InferenceTimeout
21
22client = SegmindClient() # reads SEGMIND_API_KEY
23payload = {
24 "prompt": "A straight-on view of a Victorian herbalist's cabinet: a grid of small oak drawers, each with a round brass cup handle and a cream card label in a brass frame. The front labels read 'VALERIANA', 'LAVANDULA', 'CALENDULA' and 'ARNICA' in black serif capitals. A hand-painted wooden header board above the drawers reads 'HOLLOWAY HERBALIST' with 'EST. 1894' beneath in gold leaf. A brass mortar and pestle and a set of apothecary scales rest on the counter below. Even daylight from a side window, aged wood grain and tarnished brass.",
25 "speed": "standard",
26 "num_images": 1,
27 "area": "4K",
28 "aspect_ratio": "4:3",
29}
30job = client.submit_async("minimax-h3-text-to-image", **payload)
31print(job.request_id) # available immediately
32try:
33 result = job.wait(timeout=600, interval=1.0)
34except InferenceTimeout as e:
35 print("still running:", e.request_id)
36except InferenceFailed as e:
37 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 "minimax-h3-text-to-image",
9 prompt="A straight-on view of a Victorian herbalist's cabinet: a grid of small oak drawers, each with a round brass cup handle and a cream card label in a brass frame. The front labels read 'VALERIANA', 'LAVANDULA', 'CALENDULA' and 'ARNICA' in black serif capitals. A hand-painted wooden header board above the drawers reads 'HOLLOWAY HERBALIST' with 'EST. 1894' beneath in gold leaf. A brass mortar and pestle and a set of apothecary scales rest on the counter below. Even daylight from a side window, aged wood grain and tarnished brass.",
10 speed="standard",
11 num_images=1,
12 area="4K",
13 aspect_ratio="4:3",
14)
15print(result["status"]) # COMPLETED
16print(result.get("output")) # model output (e.g. media URL)
17print(result["metrics"]["inference_time"]) # server compute seconds
18
19# --- Or submit + poll manually (track request_id, control the cadence) ---
20from segmind import SegmindClient, InferenceFailed, InferenceTimeout
21
22client = SegmindClient() # reads SEGMIND_API_KEY
23payload = {
24 "prompt": "A straight-on view of a Victorian herbalist's cabinet: a grid of small oak drawers, each with a round brass cup handle and a cream card label in a brass frame. The front labels read 'VALERIANA', 'LAVANDULA', 'CALENDULA' and 'ARNICA' in black serif capitals. A hand-painted wooden header board above the drawers reads 'HOLLOWAY HERBALIST' with 'EST. 1894' beneath in gold leaf. A brass mortar and pestle and a set of apothecary scales rest on the counter below. Even daylight from a side window, aged wood grain and tarnished brass.",
25 "speed": "standard",
26 "num_images": 1,
27 "area": "4K",
28 "aspect_ratio": "4:3",
29}
30job = client.submit_async("minimax-h3-text-to-image", **payload)
31print(job.request_id) # available immediately
32try:
33 result = job.wait(timeout=600, interval=1.0)
34except InferenceTimeout as e:
35 print("still running:", e.request_id)
36except InferenceFailed as e:
37 print("failed:", e.detail)API Endpoint
https://api.segmind.com/v1/minimax-h3-text-to-imageParameters
promptrequiredstringDescribe the image: subject, style, lighting and composition. Put text to render in quotes. Up to 32,000 characters.
"A straight-on view of a Victorian herbalist's cabinet: a grid of small oak drawers, each with a round brass cup handle and a cream card label in a brass frame. The front labels read 'VALERIANA', 'LAVANDULA', 'CALENDULA' and 'ARNICA' in black serif capitals. A hand-painted wooden header board above the drawers reads 'HOLLOWAY HERBALIST' with 'EST. 1894' beneath in gold leaf. A brass mortar and pestle and a set of apothecary scales rest on the counter below. Even daylight from a side window, aged wood grain and tarnished brass."areaoptionalstringOutput area: about 1, 4 or 16 megapixels; exact width and height follow the aspect ratio. 4K costs more per image.
"4K""1K""2K""4K"aspect_ratiooptionalstringShape of the output. auto lets the model choose from the prompt.
"auto""auto""1:1""4:3""3:4""3:2""2:3""16:9""9:16""21:9""9:21"+2 moreenhance_promptoptionalbooleanLet the model expand the prompt before generating. Turn off to use the prompt as written; then set an aspect ratio other than auto or a size. Enhancement is billed as input text.
truenum_imagesoptionalinteger1 to 10 images from one request. Each image is billed.
1Range: 1 - 10output_compressionoptionalintegerJPEG/WEBP quality from 0 to 100; ignored for png.
95Range: 0 - 100output_formatoptionalstringFile format of the images.
"jpeg""jpeg""png""webp"sizeoptionalstringOptional WIDTHxHEIGHT (e.g. 2720x1536) instead of resolution and aspect ratio: 655,360 to 20,000,000 pixels, ratio between 1:3 and 3:1.
speedoptionalstringstandard is the base model; highspeed returns faster at a higher per-token price.
"standard""standard""highspeed"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
POST /v2/minimax-h3-text-to-imageSubmit — 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