MiniMax H3 Image API

Name: MiniMax H3 Image API
Price: 3.8 USD
Author: MiniMax

Detailed images up to 4K with precise prompt following — or edit and combine up to 16 reference images.

MiniMax H3 Image API playground

Prompt

Reference Images

0/16 images

Resolution

Aspect ratio

Billed at this model’s published rate.

Result

Your generations will appear here

Other models from MiniMax

Same vendor, same API call — the differences are below.

Model	Use case	Price	Resolution	Duration	Added
MiniMax H3 Image Highspeed	Text → Image	from $7.60 / 1M output img tok	1K · 2K · 4K	—	Nov 2026
MiniMax H3 Max Recast	Video → Video	from $0.33 / sec	768p · 1080p	—	Nov 2026
MiniMax H3 Highspeed	Text → Video	from $0.04 / sec	480P · 768P	5–15s	Nov 2026
MiniMax H3 Lite	Text → Video	from $0.025 / sec	480P · 768P	5–15s	Nov 2026
MiniMax M3	Image → Text	from $1.20 / 1M output text tok	—	—	Oct 2026
MiniMax M3.1 Flash	Image → Text	from $0.60 / 1M output text tok	—	—	Oct 2026
MiniMax H3 Context IR	Video → Text	from $1.80 / 1M output text tok	—	4–15s	Oct 2026
MiniMax H3 Max Relight	Video → Video	from $0.055 / sec	480p · 768p · 1080p …	—	Oct 2026

MiniMax H3 Image API in TypeScript, Python and REST

Install the SDK

TypeScript targets Node 20+ and ships with types; Python needs 3.10+ and is async. Over REST there is nothing to install: call https://api.picsart.com from any HTTP client.

bash

npm install @picsart/ai-sdk

Authenticate

Send your Picsart API key as a bearer token. The SDK does it for you once the client is created.

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

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY, // sent as: Authorization: Bearer <key>
  apiUrl: 'https://api.picsart.com',
});

python

import os

from picsart_ai_sdk import create_client

ai = create_client(
    api_key=os.environ["PICSART_API_KEY"],  # sent as: Authorization: Bearer <key>
    api_url="https://api.picsart.com",
)

Make a request

Call the model by its id. Over REST, one endpoint serves every model: POST /workflows/v1/models/execute with the model id and its input in the body. The outer params is the envelope every workflow takes; the inner one is this model's input, with the same names generate() takes.

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

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

const result = await ai.generate('minimax-h3-image', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  resolution: "2K",
  aspectRatio: "auto"
});

console.log(result.url); // image URL

python

import asyncio
import os

from picsart_ai_sdk import create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        result = await ai.generate("minimax-h3-image", {
            "prompt": "A serene mountain lake at golden hour, ultra detailed",
            "resolution": "2K",
            "aspectRatio": "auto",
        })

        print(result.url)  # image URL


asyncio.run(main())

bash

curl -X POST 'https://api.picsart.com/workflows/v1/models/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "minimax-h3-image",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "resolution": "2K",
      "aspectRatio": "auto"
    }
  }
}'

Parameters

7 parameters, the same for the SDK and for the inner params over REST. Required ones must be supplied; the rest fall back to their defaults.

Parameter	Type	Required	Default	Details
`prompt` What to make, in plain language: the subject, style and composition. With an input image or video, what to change.	`text`	yes	`—`	max 32000 chars
`resolution` Output size. Higher costs more and takes longer.	`enum`	no	`2K`	1K, 2K, 4K
`aspectRatio` Shape of the output as width:height. An auto or adaptive option follows the input image.	`enum`	no	`auto`	auto (follows the input), 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, 3:1, 1:3
`count` How many results to make in one call. Each one is charged.	`enum`	no	`1`	1, 2, 4, 6, 8, 10
`enhancePrompt` Let the model rewrite the prompt for a better result before generating.	`boolean`	no	`true`	—
`outputFormat` File format of the result.	`enum`	no	`jpeg`	jpeg, png, webp
`imageUrls` Input images, as URLs: the image to edit, or references for subject, style or composition.	`file (image[])`	no	`—`	—

Response

generate() resolves once the job completes. One or more image URLs. Over REST the output is at response.result, inside the gateway's status envelope with the task id, its status and the amount charged.

json

{
  "items": [
    {
      "url": "https://cdn.picsart.com/…/result"
    }
  ],
  "model": "minimax-h3-image"
}

json

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "minimax-h3-image"
    }
  }
}

MiniMax H3 Image API advanced usage

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 Python, 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).

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

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

python

import asyncio
import os

from picsart_ai_sdk import ApiRunMode, create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        # Calls the 'minimax/h3-image/generations' workflow directly — params are sent as-is.
        response = await ai.apis.run("minimax/h3-image/generations", {
            "prompt": "A serene mountain lake at golden hour, ultra detailed",
        }, mode=ApiRunMode.SYNC)

        print(response["result"])  # workflow-specific output
        print((response.get("usage") or {}).get("credits"))  # amount charged, in $


asyncio.run(main())

bash

curl -X POST 'https://api.picsart.com/workflows/minimax/h3-image/generations/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "prompt": "A serene mountain lake at golden hour, ultra detailed"
  }
}'

Parameters

11 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.

Parameter	Type	Required	Default	Details
`model` Model id: MiniMax-H3-Image or MiniMax-H3-Image-Highspeed (faster).	`string`	no	`MiniMax-H3-Image`	`MiniMax-H3-ImageMiniMax-H3-Image-Highspeed`
`prompt` Image description, up to 32000 characters	`string`	yes	`—`	max 32000 chars
`images` Up to 16 reference images; when given the request is an edit. Refer to them in the prompt as "Image 1, Image 2, ..." in this order.	`MinimaxImageInput[]`	no	`—`	—
└`image_url` Reference image URL	`string`	yes	`—`	—
`n` Number of images (1–10)	`number`	no	`1`	1–10
`size` Exact output size WIDTHxHEIGHT (0.65–20 MP, ratio 1:3–3:1), or auto (default) to use aspect_ratio + area. Not combinable with aspect_ratio / area.	`string`	no	`—`	e.g. `2720x1536`
`aspect_ratio` Aspect ratio X:Y (1:3–3:1) when size is auto; auto (default) lets the model decide (from the references in an edit).	`string`	no	`—`	e.g. `16:9`
`area` Target area when size is auto (1024², 2048², 4096²)	`string`	no	`4K`	`1K2K4K`
`output_format` Output format	`string`	no	`jpeg`	`pngjpegjpgwebp`
`output_compression` JPEG/WEBP compression quality (0–100)	`number`	no	`95`	0–100
`disable_prompt_enhanced` Text-to-image only (edits always enhance): use the prompt as is. Requires an explicit size or aspect_ratio.	`boolean`	no	`false`	—
`options` GenAI options (safety checks, Picsart Drive)	`object`	no	`—`	—
└`safety_checks` Safety check settings	`object`	no	`—`	—
└`enabled` Whether to run content moderation. Defaults to true.	`boolean`	no	`—`	—
└`drive` Save result to Picsart Drive	`object`	no	`—`	—
└`name` File name in Picsart Drive	`string`	yes	`—`	—
└`attributes` Custom attributes to attach to the file	`object`	no	`—`	—
└`folder` Target folder in Picsart Drive	`object`	no	`—`	—
└`inputs_transformation` Input transformation settings	`object`	no	`—`	—
└`downscale_oversized_images` Whether to downscale oversized input images. Defaults to false.	`boolean`	no	`—`	—

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 result itself is the vendor's own shape.

json

{
  "result": {
    "items": [
      {
        "url": "https://cdn.picsart.com/…/result.jpg",
        "mimeType": "image/jpeg",
        "size": "…",
        "revised_prompt": "…",
        "driveFile": {
          "id": "wf_abc123"
        }
      }
    ]
  }
}

json

{
  "status": "success",
  "response": {
    "id": "wf_abc123",
    "status": "COMPLETED",
    "result": {
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result.jpg",
          "mimeType": "image/jpeg",
          "size": "…",
          "revised_prompt": "…",
          "driveFile": {}
        }
      ]
    }
  }
}

MiniMax H3 Image API pricing

Rates

What this model costs, in USD. Every row is an exact rate — the columns are the settings that change it.

Charged after the request finishes, on what it actually used.

Token type	Rate
Input image	$1.50 / 1M tokens
Input text	$2.30 / 1M tokens
Output image	$3.80 / 1M tokens

MiniMax H3 Image API

MiniMax H3 Image API playground

Params

Result

Other models from MiniMax

MiniMax H3 Image API in TypeScript, Python and REST

Install the SDK

Authenticate

Make a request

Parameters

Response

MiniMax H3 Image API advanced usage

Overview

Make a request

Parameters

Response

MiniMax H3 Image API pricing

Rates

MiniMax H3 Image API usage