# MiniMax H3 Max Text to Video API

> Text-to-video ya kawaida ya H3 Max yenye uwiano sita wa picha, hadi 1080P, na wimbo wa sauti wa hiari

Huzalisha video kutoka kwa `prompt` ya maandishi yenye hadi herufi 50000. Chagua `aspect_ratio` kutoka 21:9, 16:9, 4:3, 1:1, 3:4 au 9:16, na `resolution` kutoka 480P, 768P au 1080P. `duration` ni sekunde 0.92 hadi 15. `target_audio_url` hubandika klipu iliyotolewa kwenye wimbo wa sauti, na `prompt_expansion_mode` huweka kiwango cha juhudi za uandishi upya.

- Model id: `minimax/h3-max/text-to-video`
- Made by: MiniMax
- Category: Text to Video
- Output: video
- Price per second of your output video: from $0.0325 / second of output video (cheapest run $0.033 (33 API credits))
- Run: `POST https://api.doitong.ru/v1/run/minimax/h3-max/text-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/minimax/h3-max/text-to-video`
- Docs page: https://doitong.com/sw/developers/models/minimax/h3-max/text-to-video

## Pricing

Price: **from $0.0325 / second of output video** (the lowest tier; the quote prices your exact input). Price per second of your output video: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

Price by tier:

- 480P: $0.0325 / second of output video
- 768P: $0.052 / second of output video
- 1080P: $0.104 / second of output video

The full example input below costs $0.28 = 280 API credits (5 s output video × $0.052 (768P)).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/minimax/h3-max/text-to-video` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  | 1 – 50000 characters | Maagizo ya maandishi ya kuzalisha video. |
| `duration` |  | number | no | `5` | 0.92 – 15 | Muda ulioombwa kwa sekunde, ukiwa na kiwango cha chini cha 2 s wakati target_audio_url imetolewa. Ruhusu tokeo kuzidi kwa hadi takriban 0.7 s. |
| `resolution` |  | enum (string) | no | `768P` | `480P`, `768P`, `1080P` | Chaguo la mwonekano wa uzalishaji: 1080P huhitaji uboreshaji wa latent wa nyenzo iliyozalishwa kiasili katika 768P, badala ya uzalishaji kiasili katika mwonekano uliochaguliwa. |
| `seed` |  | integer \| null | no |  |  | Seed ya uzalishaji wa nasibu; ikiachwa, huchaguliwa bila mpangilio. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Uanzishaji wa kikagua usalama; true huanzisha ukaguzi. |
| `prompt_expansion_mode` |  | string | yes | `balanced` |  | Juhudi za kuandika upya kidokezo kabla ya uzalishaji: 'quality' hutengeneza kidokezo tajiri zaidi kwa takriban 30s, huku 'balanced' ikirejesha matokeo kwa takriban sekunde moja. Chagua 'disabled' kuacha upanuzi wa kidokezo. |
| `target_audio_url` |  | string (audio URL) \| null | no |  | ≥ 1 characters | Sauti ya hiari ya kubadilisha, inayotolewa kupitia URL ya HTTP(S) au data URI ya base64; klipu lazima idumu angalau sekunde 2 na isiwe kubwa kuliko 15 MB. Sauti iliyotolewa hubadilisha sauti iliyozalishwa kwa kasi ileile ya uchezaji: muda wa ziada hukatwa mwishoni, na klipu fupi huongezewa ukimya ili ilingane na video. Usampulishaji upya hadi 96 kHz unaweza kutokea kwa viwango vya sampuli vya juu isivyo kawaida. |
| `aspect_ratio` |  | enum (string) | no | `16:9` | `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Uwiano wa picha wa video ya tokeo. |

File parameters (`target_audio_url`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "prompt_expansion_mode": "balanced"
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "prompt_expansion_mode": "balanced"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/minimax/h3-max/text-to-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "prompt_expansion_mode": "balanced"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/minimax/h3-max/text-to-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "prompt_expansion_mode": "balanced"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "prompt_expansion_mode": "balanced",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/minimax/h3-max/text-to-video", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "minimax/h3-max/text-to-video",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "prompt_expansion_mode": "balanced"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "minimax/h3-max/text-to-video",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 280,
    "usd": "0.28",
    "charged": 280,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "prompt_expansion_mode": "balanced"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200
    },
    "expanded_prompt": "string",
    "timings": {}
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size} | Video iliyotolewa na modeli. |
| `expanded_prompt` | string \| null | Kidokezo kilichopanuliwa na kuandaliwa kwa modeli, au null ikiwa hakuna maandishi yaliyopanuliwa. Hali za null ni upanuzi uliozimwa, upanuzi ambao haukubadilisha chochote, na upanuzi ulioshughulikiwa ndani na API iliyopangishwa ya modeli. |
| `timings` | object \| null | Vipimo vya muda vilivyoonyeshwa kwa sekunde, vinavyopatikana tu kwenye njia zinazoripoti muda wa backend; vinginevyo ni null. Ingizo la 'inference' hupima muda ambao uondoaji wa kelele wa DiT ulichukua kwenye backend ya GPU. |

## Related models

- [H3 Max Camera Controls](https://doitong.com/developers/models/minimax/h3-max/camera-controls.md) (`minimax/h3-max/camera-controls`): from $0.0325 / second
- [H3 Max Image to Video](https://doitong.com/developers/models/minimax/h3-max/image-to-video.md) (`minimax/h3-max/image-to-video`): from $0.0325 / second of output video
- [H3 Max Reference to Video](https://doitong.com/developers/models/minimax/h3-max/reference-to-video.md) (`minimax/h3-max/reference-to-video`): from $0.05 / second of output video
- [H3 Max](https://doitong.com/developers/models/minimax/h3-max/insert-video.md) (`minimax/h3-max/insert-video`): from $0.05 / second
- [H3 Max Extend Video](https://doitong.com/developers/models/minimax/h3-max/extend-video.md) (`minimax/h3-max/extend-video`): from $0.05 / second of output video
- [H3 Max Recast](https://doitong.com/developers/models/minimax/h3-max/recast.md) (`minimax/h3-max/recast`): from $0.30 / second of input video
- [H3 Max Reframe](https://doitong.com/developers/models/minimax/h3-max/reframe-video.md) (`minimax/h3-max/reframe-video`): from $0.05 / second of input video
- [H3 Max Relight](https://doitong.com/developers/models/minimax/h3-max/relight.md) (`minimax/h3-max/relight`): from $0.05 / second of input video

## Links

- HTML page: https://doitong.com/developers/models/minimax/h3-max/text-to-video
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=minimax/h3-max/text-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/minimax/h3-max/text-to-video