# PixVerse V4 Text To Video Fast API

> Toleo la haraka zaidi la maandishi-hadi-video ya V4 lenye kikomo cha 720p na bila chaguo la muda

Toleo la haraka la modeli ya V4 ya maandishi hadi video. Hupokea `prompt` ya maandishi na hutoa tokeo la 360p, 540p au 720p, bila 1080p wala mpangilio wa `duration`. Uwiano wa picha mitano kutoka 16:9 hadi 9:16 unaungwa mkono, pamoja na `negative_prompt`, `seed` na mipangilio ya `style` (anime, 3d_animation, clay, comic, cyberpunk). Vidokezo vina kikomo cha baiti 2048 za UTF-8.

- Model id: `pixverse/v4/text-to-video/fast`
- Made by: PixVerse
- Category: Text to Video
- Output: video
- Price: from $0.30 / request (cheapest run $0.30 (300 API credits))
- Run: `POST https://api.doitong.ru/v1/run/pixverse/v4/text-to-video/fast`
- Quote: `POST https://api.doitong.ru/v1/quote/pixverse/v4/text-to-video/fast`
- Docs page: https://doitong.com/sw/developers/models/pixverse/v4/text-to-video/fast

## Pricing

Price: **from $0.30 / request** (the lowest tier; the quote prices your exact input). Billed once per request.

Price rules (the first rule that matches the input wins; a parameter you leave out counts as its default):

- When `resolution` = 720p: $0.40 (400 API credits) / request
- When `resolution` = 1080p: $0.80 (800 API credits) / request

The full example input below costs $0.40 = 400 API credits (1 request × 400 API credits).

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/pixverse/v4/text-to-video/fast` 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 |  |  | Kidokezo cha uzalishaji wa video chenye kikomo cha ukubwa kinachopimwa kwa baiti: hata maandishi mafupi kwa kuonekana yanaweza kukizidi emoji, herufi zenye alama za matamshi au herufi zisizo za Kilatini zinapotumia baiti nyingi kwa kila herufi. Urefu wa juu uliosimbwa ni baiti 2048 kwa kutumia UTF-8; idadi ya herufi haiamui kama kinafaa. |
| `aspect_ratio` |  | enum (string) | no | `16:9` | `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Uwiano wa picha wa video ya tokeo. |
| `resolution` |  | enum (string) | no | `720p` | `360p`, `540p`, `720p` | Mwonekano wa video ya tokeo. |
| `negative_prompt` |  | string | no | `` |  | Kidokezo hasi cha uzalishaji chenye kikomo cha urefu kinachopimwa kwa baiti: hata maandishi mafupi kwa kuonekana yanaweza kukizidi kwa sababu emoji, herufi zenye alama za matamshi na herufi zisizo za Kilatini hutumia baiti nyingi. Kikomo cha juu ni baiti 2048, kinachopimwa kwa UTF-8, si idadi ya herufi. |
| `style` |  | enum (string) \| null | no |  | `anime`, `3d_animation`, `clay`, `comic`, `cyberpunk` | Mtindo unaotumika kwenye video iliyozalishwa. |
| `seed` |  | integer \| null | no |  |  | Mbegu ya uzalishaji wa video unaoweza kurudiwa. Kurudia kwa usahihi kila uendeshaji kunahitaji toleo la modeli, kidokezo na mbegu visibadilike. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Ukaguzi unaweza kulegezwa kwa kuweka false, ikiwa mpigaji simu ameidhinishwa. |

## Example input

Required parameters only:

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

A fuller example:

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

## 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/pixverse/v4/text-to-video/fast?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"
  }'

# 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/pixverse/v4/text-to-video/fast?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"
  }),
});
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",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/pixverse/v4/text-to-video/fast", 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": "pixverse/v4/text-to-video/fast",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
      },
      "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": "pixverse/v4/text-to-video/fast",
  "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": 400,
    "usd": "0.40",
    "charged": 400,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  },
  "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
    }
  },
  "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. |

## Related models

- [PixVerse V3.5 Text To Video](https://doitong.com/developers/models/pixverse/v3.5/text-to-video.md) (`pixverse/v3.5/text-to-video`): from $0.15 / run
- [PixVerse V3.5 Text To Video Fast](https://doitong.com/developers/models/pixverse/v3.5/text-to-video/fast.md) (`pixverse/v3.5/text-to-video/fast`): from $0.30 / request
- [PixVerse V4 Text To Video](https://doitong.com/developers/models/pixverse/v4/text-to-video.md) (`pixverse/v4/text-to-video`): from $0.15 / run
- [PixVerse Swap](https://doitong.com/developers/models/pixverse/swap.md) (`pixverse/swap`): from $0.15 / run
- [PixVerse V3.5 Effects](https://doitong.com/developers/models/pixverse/v3.5/effects.md) (`pixverse/v3.5/effects`): from $0.15 / run
- [PixVerse V3.5 Image To Video](https://doitong.com/developers/models/pixverse/v3.5/image-to-video.md) (`pixverse/v3.5/image-to-video`): from $0.15 / run
- [PixVerse V3.5 Image To Video Fast](https://doitong.com/developers/models/pixverse/v3.5/image-to-video/fast.md) (`pixverse/v3.5/image-to-video/fast`): from $0.30 / request
- [PixVerse V3.5 Transition](https://doitong.com/developers/models/pixverse/v3.5/transition.md) (`pixverse/v3.5/transition`): from $0.15 / run

## Links

- HTML page: https://doitong.com/developers/models/pixverse/v4/text-to-video/fast
- 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=pixverse/v4/text-to-video/fast
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/pixverse/v4/text-to-video/fast