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MiniMax H3 Max

MiniMax · Video · Text → Video

Top-tier MiniMax H3 Max video from text, a start/end frame, or reference images, videos, and audio — refer to references in the prompt as Image 1, Video 1, Audio 1, in input order. Up to 15s at 1080p.

Model ID: minimax-h3-maxWorkflow: minimax/h3-max/video-generation
Start/End FrameMulti-Image InputVideo InputAudio Input1080p5-15 sec
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Overview

Alongside the unified model APIs, we expose compatibility APIs that take each vendor's original parameters exactly as the vendor defines them — nothing renamed, nothing reshaped on the way through.

That makes them the shortest path onto Picsart if you already work with the vendor directly: the request bodies you've already written keep working as they are. You keep their parameter names and defaults, and you get the vendor's full parameter set rather than the subset that is shared across every model.

The cost is that a request is written for one vendor — switching models later means rewriting it, and results come back in the vendor's own shape. When you'd rather write once and change models freely, use the unified API.

Make a request

Call the workflow with ai.apis.run() in TypeScript, or hit /workflows/{workflow}/execute directly — params is passed through untouched either way.

These endpoints are addressed by workflow name rather than model id: the one in this model's header, since one model runs as one workflow. Authentication is unchanged — your Picsart API key as a bearer token (see Authentication).

ts
import { createClient, ApiRunMode } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

// Calls the 'minimax/h3-max/video-generation' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('minimax/h3-max/video-generation', {
  prompt: "A serene mountain lake at golden hour, ultra detailed"
}, {
  mode: ApiRunMode.SYNC,
});

console.log(result); // workflow-specific output
console.log(usage?.credits); // credits charged

Async (submit & poll)

This model can run longer than the sync limit (~20s). In TypeScript, ai.apis.run(…, { mode: ApiRunMode.ASYNC }) polls for you; over HTTP, submit and poll yourself.

ts
import { createClient, ApiRunMode } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

// mode: ASYNC submits the job and polls under the hood — you just await.
const { result } = await ai.apis.run('minimax/h3-max/video-generation', {
  prompt: "A serene mountain lake at golden hour, ultra detailed"
}, {
  mode: ApiRunMode.ASYNC,
});

console.log(result);

Parameters

13 parameters, sent inside params. These are the vendor's own names, so they line up one-for-one with the vendor's documentation. Required ones must be supplied; the rest fall back to their defaults.

ParameterTypeRequiredDefaultDetails
prompt
Text prompt for video generation. With reference inputs, address them by modality and order — Image 1, Image 2, Video 1, Audio 1, and so on.
stringyes
max 50000 chars
prompt_expansion_mode
How much effort to spend rewriting the prompt before generation. 'balanced' returns in about a second, 'quality' spends up to ~30s on a richer prompt.
stringnobalanced
balancedquality
duration
Video duration in seconds
numberno5
5–15
resolution
The native generation resolution of the video, or 1080P latent refinement from a native 768P source. Case-insensitive.
stringno768P
480P768P1080P
aspect_ratio
The aspect ratio of the generated video. Omitted, it defaults to 16:9 generating from the prompt alone and to 'adaptive' generating from references. Ignored when a frame is supplied — the output then follows that image. 'adaptive' follows the reference inputs, so it is accepted only alongside them.
stringno
adaptive21:916:94:31:13:49:16
image_url
URL of the image to use as the first frame. When provided, the output canvas follows this image. Cannot be combined with reference inputs.
stringno
end_image_url
URL of the image to use as the last frame. It may be provided alone for end-only keyframe generation, in which case the output canvas follows this image. Cannot be combined with reference inputs.
stringno
reference_image_urls
URLs of subject/style reference images, referenced in the prompt as Image 1, Image 2, and so on. Reference images, videos and audio clips must add up to at most 12 files. Cannot be combined with frames.
string[]no
max 9 items
reference_video_urls
URLs of motion/reference video clips (2-15 seconds each, combined duration at most 15 seconds), referenced in the prompt as Video 1, Video 2, and so on. Reference images, videos and audio clips must add up to at most 12 files. Cannot be combined with frames.
string[]no
max 3 items
reference_audio_urls
URLs of reference audio clips (2-15 seconds each, combined duration at most 15 seconds), referenced in the prompt as Audio 1, Audio 2, and so on. Needs at least one reference image or video alongside it.
string[]no
max 3 items
seed
Random seed. A random seed is selected when omitted.
numberno
enable_safety_checker
Run the vendor safety checker
booleannotrue
options
GenAI options (safety checks, Picsart Drive)
objectno
safety_checks
Safety check settings
objectno
enabled
Whether to run content moderation. Defaults to true.
booleanno
drive
Save result to Picsart Drive
objectno
name
File name in Picsart Drive
stringyes
attributes
Custom attributes to attach to the file
objectno
folder
Target folder in Picsart Drive
objectno

Response

Over HTTP the output arrives inside a status envelope, at response.result. ai.apis.run() unwraps that envelope for you and resolves to { result, usage } instead. Either way the resultitself is the vendor's own shape.

json
{
  "result": {
    "url": "https://cdn.picsart.com/…/result.mp4",
    "mimeType": "video/mp4",
    "expandedPrompt": "…",
    "driveFile": {}
  },
  "usage": {
    "credits": 1
  }
}