# MiniMax H3 Max Turbo

> Faster-than-realtime MiniMax H3 Max Turbo video from text or a start/end frame, with prompt expansion. Up to 15s at 1080p.

## Overview

- **Model ID**: `minimax-h3-max-turbo`
- **Workflow**: `minimax/h3-max-turbo/text-to-video`
- **Provider**: MiniMax
- **Category**: Text → Video (video)
- **Output**: A video URL.
- **Tags**: fast, image input, start/end frame, 1080p, 5-15 sec
- **Unified endpoint**: `POST https://api.picsart.com/workflows/v1/models/execute` (model id in the body)
- **Compatibility endpoint**: `POST https://api.picsart.com/workflows/minimax/h3-max-turbo/text-to-video/execute` (vendor's own parameters)
- **Execution**: long-running — use the async submit/poll pair or the SDK, which polls for you
- **Model page**: https://picsart.com/api-platform/models/minimax-h3-max-turbo

## Pricing

Rates are in USD. Every row below is an exact rate for the settings it names — the columns are the settings that change the price for this model. Every response reports what was actually charged in `response.usage.credits`.

| Tier | Rate |
| --- | --- |
| 480p | $0.015 / sec |
| 768p | $0.024 / sec |
| 1080p | $0.048 / sec |

Published rates. Volume pricing, invoicing and annual agreements: https://picsart.com/api-platform/contact-sales

## Authentication

The SDK and the REST API authenticate with a Picsart API key sent as a bearer token. Create a key in the console at https://picsart.com/api-platform/dashboard/api-keys, keep it in a server-side environment variable, and never ship it in browser code or commit it.

```bash
export PICSART_API_KEY="YOUR_KEY"
```

```http
Authorization: Bearer $PICSART_API_KEY
```

The CLI and the MCP server do not use an API key: `gen-ai login` signs in through the browser once per machine and stores a token locally.

## Interfaces

- **SDK** — `@picsart/ai-sdk` (TypeScript, Node 20+, ESM). Type-safe `ai.generate()` / `ai.generateText()` with per-model parameter types; polls long jobs for you.
- **REST** — the API gateway at `https://api.picsart.com`. Sync `/execute`, or async `/submit` + `/{taskId}/result`.
- **CLI** — `@picsart/gen-ai` (`gen-ai`). Generate from a terminal, quote cost before spending, emit JSON for pipelines.
- **MCP** — the same models inside Claude Code, Cursor, Windsurf and other MCP hosts. Setup: https://picsart.com/gen-ai-mcp/

```bash
npm install @picsart/ai-sdk      # SDK
npm install -g @picsart/gen-ai   # CLI (also drives the MCP server)
```

## Unified API (recommended)

One parameter set, used by the SDK and by REST alike: the names below are what `ai.generate('minimax-h3-max-turbo', …)` takes, and what goes inside the inner `params` of a REST call. Over REST the model id travels in the body, not the path — one workflow, `v1/models`, fronts the whole catalogue.

### Execution modes

- **Sync** — `POST /workflows/v1/models/execute` returns the result in one call. Only for jobs that finish within ~20 seconds; otherwise it times out.
- **Async** — `POST /workflows/v1/models/submit` returns a task id; poll `GET /workflows/v1/models/{taskId}/result` until `response.status` is `COMPLETED` or `FAILED`. Task statuses: `ACCEPTED` · `IN_PROGRESS` · `COMPLETED` · `FAILED`.
- **SDK** — `ai.generate()` always awaits the finished result; polling is hidden.

Video jobs routinely outrun the sync limit: use async over REST, or the SDK, which polls for you.

### Input parameters

- **`prompt`** (`string`, _required_): Prompt
  - Max length: 50000 characters
- **`startFrame`** (`string`, _optional_): Start Frame
  - Accepts: image URL
- **`endFrame`** (`string`, _optional_): End Frame
  - Accepts: image URL
- **`resolution`** (`string`, _optional_)
  - Default: `"768p"`
  - Options: `480p`, `768p`, `1080p`
- **`duration`** (`number`, _optional_)
  - Default: `5`
  - Range: 5–15 (step 1)
- **`aspectRatio`** (`string`, _optional_)
  - Default: `"16:9"`
  - Options: `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`
- **`promptExpansionMode`** (`string`, _optional_): Prompt Expansion
  - Default: `"balanced"`
  - Options: `balanced`, `quality`
- **`seed`** (`number`, _optional_)
  - Default: `-1`
  - Range: -1–2147483647
- **`enableSafetyChecker`** (`boolean`, _optional_): Safety Checker
  - Default: `true`

### Input JSON Schema

The inner `params` object. Over REST it is wrapped as `{ "params": { "model": "<id>", "params": <this> } }`; the SDK takes it directly.

```json
{
  "type": "object",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "type": "string",
      "maxLength": 50000,
      "description": "Prompt"
    },
    "startFrame": {
      "type": "string",
      "format": "uri",
      "description": "Start Frame"
    },
    "endFrame": {
      "type": "string",
      "format": "uri",
      "description": "End Frame"
    },
    "resolution": {
      "type": "string",
      "enum": [
        "480p",
        "768p",
        "1080p"
      ],
      "default": "768p"
    },
    "duration": {
      "type": "number",
      "minimum": 5,
      "maximum": 15,
      "multipleOf": 1,
      "default": 5
    },
    "aspectRatio": {
      "type": "string",
      "enum": [
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "promptExpansionMode": {
      "type": "string",
      "enum": [
        "balanced",
        "quality"
      ],
      "default": "balanced",
      "description": "Prompt Expansion"
    },
    "seed": {
      "type": "number",
      "minimum": -1,
      "maximum": 2147483647,
      "default": -1
    },
    "enableSafetyChecker": {
      "type": "boolean",
      "default": true,
      "description": "Safety Checker"
    }
  },
  "additionalProperties": false
}
```

### Required parameters example

The required parameters plus the defaults that shape the output, as a REST body:

```json
{
  "params": {
    "model": "minimax-h3-max-turbo",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "resolution": "768p",
      "duration": 5,
      "aspectRatio": "16:9"
    }
  }
}
```

### Response

The body is the gateway's status envelope: the output is at `response.result`, next to the task id, its status and the credits charged. Asset models return `url` plus an `items` array of results.

```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-max-turbo"
    }
  }
}
```

What `ai.generate()` / `ai.generateText()` resolve to (the envelope already unwrapped):

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

### Usage examples

#### TypeScript (SDK)

```typescript
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-max-turbo', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  resolution: "768p",
  duration: 5,
  aspectRatio: "16:9"
});

console.log(result.url); // video URL
```

#### cURL (sync)

```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-max-turbo",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "resolution": "768p",
      "duration": 5,
      "aspectRatio": "16:9"
    }
  }
}'
```

#### cURL (async: submit, then poll)

```bash
# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/v1/models/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "minimax-h3-max-turbo",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "resolution": "768p",
      "duration": 5,
      "aspectRatio": "16:9"
    }
  }
}'
# → { "status": "success", "response": { "id": "task_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/v1/models/task_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'
```

#### CLI

```bash
gen-ai login  # once per machine
gen-ai models info minimax-h3-max-turbo  # this model's parameters
gen-ai pricing minimax-h3-max-turbo  # quote before spending credits
gen-ai generate -m minimax-h3-max-turbo \
  -p "A serene mountain lake at golden hour" \
  -d 5 \
  --ar 16:9
```

## Compatibility API (vendor parameters)

Alongside the unified API, the `minimax/h3-max-turbo/text-to-video` workflow takes MiniMax's own parameters exactly as the vendor defines them — nothing renamed or reshaped. It is the shortest path onto Picsart for request bodies already written against the vendor; the trade is that a request is written for one vendor, and the result comes back in the vendor's own shape. Same authentication.

- **Endpoint**: `POST https://api.picsart.com/workflows/minimax/h3-max-turbo/text-to-video/execute` (sync) · `POST …/submit` + `GET …/{taskId}/result` (async)
- **SDK**: `ai.apis.run('minimax/h3-max-turbo/text-to-video', params, { mode })` — params forwarded verbatim

### Vendor parameters

| Parameter | Type | Required | Default | Details |
| --- | --- | --- | --- | --- |
| `seed` | `integer` | no | — | Random seed. A random seed is selected when omitted. |
| `enable_safety_checker` | `boolean` | no | `true` | If set to true, the safety checker will be enabled. |
| `prompt_expansion_mode` | `string` | yes | `balanced` | How much effort to spend rewriting the prompt before generation. 'disabled' skips prompt expansion. 'balanced' returns in about a second. 'quality' spends up to ~30s on a richer prompt. · e.g. `disabled` |
| `resolution` | `string` | no | `768P` | The native generation resolution, or 1080P latent refinement from a native 768P source. · Options: `480P`, `768P`, `1080P` |
| `prompt` | `string` | yes | — | Text prompt for video generation · 1–50000 chars · e.g. `A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves.` |
| `target_audio_url` | `string` | no | — | Optional URL of an audio clip at least 2 seconds long (maximum 15 MB) to pin to the generated soundtrack. Longer clips are trimmed to the generated video's length, keeping the beginning. The original audio replaces the output soundtrack, padded with silence if shorter than the video, without changing playback speed. Exceptionally high sample rates may be resampled to 96 kHz. Accepts an HTTP(S) URL or a base64 data URI. · min 1 chars · pattern \S |
| `aspect_ratio` | `string` | no | `16:9` | The aspect ratio of the generated video. · Options: `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` |
| `sync_mode` | `boolean` | no | `false` | Return the generated video as base64 instead of a CDN URL. |
| `duration` | `number` | no | `5` | Video length in seconds. The output can run up to about 0.7 s longer than requested. Use at least 2 s with target_audio_url. · 0.92–15 |
| `options` | `object` | no | — | Platform-specific options for safety checks and Picsart Drive integration. |
| └ `safety_checks` | `object` | no | — | Safety check configuration. |
| └   `enabled` | `boolean` | no | `true` | Enable or disable text safety checks. Defaults to true. |
| └ `drive` | `object` | no | — | Picsart Drive storage options. When provided, the result will be saved to the user's Drive. |
| └   `name` | `string` | yes | — | Filename to save the result as in Picsart Drive. |
| └   `attributes` | `object` | no | — | Additional file metadata attributes. |
| └   `folder` | `object` | no | — | Destination folder in Picsart Drive. |

### Example request body

```json
{
  "params": {
    "prompt_expansion_mode": "disabled",
    "prompt": "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves."
  }
}
```

### Usage examples

#### TypeScript (`ai.apis.run`)

```typescript
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-turbo/text-to-video' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('minimax/h3-max-turbo/text-to-video', {
  prompt_expansion_mode: "disabled",
  prompt: "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves."
}, {
  mode: ApiRunMode.SYNC,
});

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

#### cURL (sync)

```bash
curl -X POST 'https://api.picsart.com/workflows/minimax/h3-max-turbo/text-to-video/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "prompt_expansion_mode": "disabled",
    "prompt": "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves."
  }
}'
```

#### cURL (async: submit, then poll)

```bash
# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/minimax/h3-max-turbo/text-to-video/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "prompt_expansion_mode": "disabled",
    "prompt": "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves."
  }
}'
# → { "status": "success", "response": { "id": "wf_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/minimax/h3-max-turbo/text-to-video/wf_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'
```

### Response

Over HTTP the vendor-shaped result arrives inside the gateway envelope at `response.result`:

```json
{
  "status": "success",
  "response": {
    "id": "wf_abc123",
    "status": "COMPLETED",
    "result": {
      "timings": {},
      "video": {
        "file_name": "z9RV14K95DvU.png",
        "url": "https://cdn.picsart.com/…/result.mp4",
        "content_type": "image/png",
        "file_size": 4404019
      },
      "expanded_prompt": "…"
    }
  }
}
```

`ai.apis.run()` unwraps that envelope and resolves to `{ result, usage }`:

```json
{
  "result": {
    "timings": {},
    "video": {
      "file_name": "z9RV14K95DvU.png",
      "url": "https://cdn.picsart.com/…/result.mp4",
      "content_type": "image/png",
      "file_size": 4404019
    },
    "expanded_prompt": "…"
  }
}
```

## Additional resources

- Model page: https://picsart.com/api-platform/models/minimax-h3-max-turbo
- Try it: https://picsart.com/api-platform/models/minimax-h3-max-turbo/playground
- SDK: https://picsart.com/api-platform/models/minimax-h3-max-turbo/sdk
- REST API (unified): https://picsart.com/api-platform/models/minimax-h3-max-turbo/api
- Compatibility API (vendor parameters): https://picsart.com/api-platform/models/minimax-h3-max-turbo/advanced
- Pricing: https://picsart.com/api-platform/models/minimax-h3-max-turbo/pricing
- This document: https://picsart.com/api-platform/models/minimax-h3-max-turbo/llms.txt
- All models: https://picsart.com/api-platform/models
- Docs — quickstart https://picsart.com/api-platform/docs/quickstart, authentication https://picsart.com/api-platform/docs/authentication, SDK https://picsart.com/api-platform/docs/sdk, REST https://picsart.com/api-platform/docs/api-reference, CLI https://picsart.com/api-platform/docs/cli, MCP https://picsart.com/api-platform/docs/mcp
- CLI reference: https://picsart.github.io/picsart-mcp-cli-docs/guide/introduction