# PixVerse V3.5 Text To Video API

> Text-to-video trên PixVerse V3.5 với năm tỷ lệ khung hình và đoạn video dài 5 hoặc 8 giây

Tạo đoạn video từ `prompt` giới hạn ở 2048 byte UTF-8. `aspect_ratio` có thể là 16:9, 4:3, 1:1, 3:4 hoặc 9:16, còn độ phân giải từ 360p đến 1080p. `duration` là 5 hoặc 8 giây, trong đó 1080p tối đa 5 giây. Hỗ trợ `style`, `negative_prompt` và `seed` tùy chọn.

- Model id: `pixverse/v3.5/text-to-video`
- Made by: PixVerse
- Category: Text to Video
- Output: video
- Price per run: from $0.15 / run (cheapest run $0.15 (150 API credits))
- Run: `POST https://api.doitong.ru/v1/run/pixverse/v3.5/text-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/pixverse/v3.5/text-to-video`
- Docs page: https://doitong.com/vi/developers/models/pixverse/v3.5/text-to-video

## Pricing

Price: **from $0.15 / run** (the lowest tier; the quote prices your exact input). Price per run: 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:

- 360p: $0.15 / run
- 540p: $0.15 / run
- 720p: $0.20 / run
- 360p, 8_s: $0.30 / run
- 540p, 8_s: $0.30 / run
- 720p, 8_s: $0.40 / run
- 1080p: $0.40 / run
- 1080p, 8_s: $0.80 / run

The full example input below costs $0.20 = 200 API credits (1 run × $0.20 (720p)).

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/v3.5/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 |  |  | Lời nhắc tạo video với giới hạn kích thước tính theo byte: văn bản ngắn về mặt hiển thị vẫn có thể vượt giới hạn khi emoji, chữ có dấu hoặc ký tự ngoài Latin chiếm nhiều byte cho mỗi ký tự. Độ dài mã hóa tối đa là 2048 byte bằng UTF-8; số ký tự không quyết định văn bản có vừa hay không. |
| `aspect_ratio` |  | enum (string) | no | `16:9` | `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Tỷ lệ khung hình của video đầu ra. |
| `resolution` |  | enum (string) | no | `720p` | `360p`, `540p`, `720p`, `1080p` | Độ phân giải của video đầu ra. |
| `duration` |  | enum (string) | no | `5` | `5`, `8` | Thời lượng video, tối đa 5 giây khi đầu ra là 1080p; chỉ định độ dài bằng giây. |
| `negative_prompt` |  | string | no | `` |  | Lời nhắc tạo sinh phủ định với giới hạn độ dài tính theo byte: văn bản ngắn về mặt hiển thị vẫn có thể vượt giới hạn vì emoji, chữ có dấu và ký tự ngoài Latin chiếm nhiều byte. Tối đa 2048 byte được đo bằng UTF-8, không phải số ký tự. |
| `style` |  | enum (string) \| null | no |  | `anime`, `3d_animation`, `clay`, `comic`, `cyberpunk` | Phong cách áp dụng cho video được tạo. |
| `seed` |  | integer \| null | no |  |  | Seed để tạo video có thể lặp lại. Để tái tạo chính xác ở mỗi lần chạy, phải giữ nguyên phiên bản mô hình, lời nhắc và seed. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Có thể nới lỏng việc kiểm duyệt bằng cách đặt thành false, nếu người gọi được cấp quyền. |

## 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/v3.5/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"
  }'

# 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/v3.5/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"
  }),
});
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/v3.5/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": "pixverse/v3.5/text-to-video",
      "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/v3.5/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": 200,
    "usd": "0.20",
    "charged": 200,
    "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 do mô hình tạo ra. |

## Related models

- [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 V4 Text To Video Fast](https://doitong.com/developers/models/pixverse/v4/text-to-video/fast.md) (`pixverse/v4/text-to-video/fast`): from $0.30 / request
- [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/v3.5/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=pixverse/v3.5/text-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/pixverse/v3.5/text-to-video