MiniMax Hailuo H3 Max Text to Video API

Generate lifelike 768P text-to-video with native audio.

PlaygroundAPI
Pricing
~22.13s
POST /v2/minimax-h3-max-text-to-video · submit + poll
 1# pip install "segmind>=1.1.0"
 2# export SEGMIND_API_KEY="YOUR_API_KEY"
 3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
 4
 5# Async (v2) — recommended for long-running / video models.
 6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
 7# deadline and keeps the request_id so you can re-poll later.
 8client = SegmindClient()                      # reads SEGMIND_API_KEY
 9payload = {
10    "prompt": "Inside a cryogenics lab, a gloved researcher tips a steel flask of liquid nitrogen across a stainless bench; dense white fog cascades over the edge and the camera drops low to follow it rolling across the floor, swallowing a row of glass beakers as frost blooms up the flask under cold blue light.",
11    "duration": 6,
12    "resolution": "768P",
13    "ratio": "16:9",
14    "prompt_expansion_mode": "balanced",
15}
16job = client.submit_async("minimax-h3-max-text-to-video", **payload)
17print(job.request_id)                         # available immediately
18try:
19    result = job.wait(timeout=900, interval=2.0)
20    print(result["status"])                  # COMPLETED
21    print(result.get("output"))              # model output (e.g. video URL)
22except InferenceTimeout as e:
23    print("still running:", e.request_id)    # re-poll later with this id
24except InferenceFailed as e:
25    print("failed:", e.detail)
26
27# Fast models (<=600s) can use the one-liner instead:
28# result = segmind.run("minimax-h3-max-text-to-video", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/minimax-h3-max-text-to-video

Parameters

promptrequired
string

Scene, subject and motion to generate, up to 7000 characters. Lead with one clear action.

durationoptional
integer

Clip length in seconds, from 5 to 15. Use 6 to 8 for a single action.

Default: 6Range: 5 - 15
prompt_expansion_modeoptional
string

How much the prompt is auto-expanded. balanced for most, quality for sparse prompts, disabled keeps it verbatim.

Default: "balanced"
Allowed values :
"disabled""balanced""quality"
ratiooptional
string

Output aspect ratio. Use 16:9 for landscape, 9:16 for vertical social, 1:1 for square.

Default: "16:9"
Allowed values :
"21:9""16:9""4:3""1:1""3:4""9:16"
resolutionoptional
string

Output resolution. Use 768P for finals, 480P for fast drafts.

Default: "768P"
Allowed values :
"480P""768P"

Response Type

Returns: Video

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/minimax-h3-max-text-to-video

    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