# Infinitalk · Single Text API

> Talende avatarvideo fra et billede og indtastet tekst, oplæst af en valgt indbygget stemme

I stedet for en lydfil tager denne variant `text_input` og en `voice` (f.eks. Aria, Roger eller Sarah), som oplæses, hvorefter avataren læbesynkroniseres fra `image_url`. En `prompt` styrer videoen. `num_frames` går fra 41 til 721, `resolution` er 480p eller 720p, og `acceleration` kan være none, regular eller high.

- Model id: `infinitalk/single-text`
- Made by: Meituan
- Category: Lipsync & Avatars
- Output: video
- Estimated price per run: from $2.32 / run (cheapest run $2.32 (2320 API credits))
- Run: `POST https://api.doitong.com/v1/run/infinitalk/single-text`
- Quote: `POST https://api.doitong.com/v1/quote/infinitalk/single-text`
- Docs page: https://doitong.com/da/developers/models/infinitalk/single-text

## Pricing

Price: **from $2.32 / run** (the lowest tier; the quote prices your exact input). Estimated from the typical cost of one run. The quote is exactly what the run charges.

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

- When `num_frames` > 580 and `resolution` = 720p: base price × 11.25
- When `num_frames` ≤ 580 and `resolution` = 720p: base price × 9.0
- When `num_frames` ≤ 435 and `resolution` = 720p: base price × 6.75
- When `num_frames` > 580 and `resolution` = 480p: base price × 5
- When `num_frames` ≤ 290 and `resolution` = 720p: base price × 4.5
- When `num_frames` ≤ 580 and `resolution` = 480p: base price × 4
- When `num_frames` ≤ 435 and `resolution` = 480p: base price × 3
- When `num_frames` ≤ 145 and `resolution` = 720p: base price × 2.25
- When `num_frames` ≤ 290 and `resolution` = 480p: base price × 2

The full example input below costs $2.32 = 2320 API credits (1 request × 2320 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.com/v1/quote/infinitalk/single-text` 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

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `image_url` | `image` | string (image URL) | yes |  |  | URL til kildebillede, hvor det valgte højde-bredde-forhold afgør, om forbehandling er nødvendig: en uoverensstemmelse udløser ændring af størrelse efterfulgt af central beskæring. |
| `text_input` |  | string | yes |  |  | Tekst, der styrer videogenereringsprocessen. |
| `voice` |  | enum (string) | yes |  | `Aria`, `Roger`, `Sarah`, `Laura`, `Charlie`, `George`, `Callum`, `River`, `Liam`, `Charlotte`, `Alice`, `Matilda`, `Will`, `Jessica`, `Eric`, `Chris`, `Brian`, `Daniel`, `Lily`, `Bill` | Stemme valgt til talesyntese. |
| `prompt` |  | string | yes |  |  | Tekstinstruktioner, der styrer videogenerering. |
| `num_frames` |  | integer | no | `145` | 41 – 721 | Antal frames til generering, med det tilladte interval 41–721. |
| `resolution` |  | enum (string) | no | `480p` | `480p`, `720p` | Outputvideoens opløsning; kun 480p og 720p understøttes. |
| `seed` |  | integer | no | `42` | 0 – 4,294,967,295 | Seed, der gør genereringen reproducerbar. Indstilling til None vælger en seed tilfældigt. |
| `acceleration` |  | enum (string) | no | `regular` | `none`, `regular`, `high` | Accelerationsniveau anvendt under generering. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Screening kan lempes ved at angive false, hvis den kaldende part er autoriseret. |

File parameters (`image`) 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
{
  "image": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
  "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "voice": "Aria",
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
}
```

A fuller example:

```json
{
  "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
  "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "voice": "Aria",
  "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.com/v1/run/infinitalk/single-text?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
    "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "voice": "Aria",
    "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.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.com/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/infinitalk/single-text?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
    "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "voice": "Aria",
    "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.com/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
    "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "voice": "Aria",
    "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/infinitalk/single-text", 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.com/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": "infinitalk/single-text",
      "input": {
        "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
        "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "voice": "Aria",
        "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": "infinitalk/single-text",
  "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": 2320,
    "usd": "2.32",
    "charged": 2320,
    "refunded": 0
  },
  "input": {
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
    "text_input": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "voice": "Aria",
    "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
    },
    "seed": 42
  },
  "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.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size} | Videofil produceret ved generering. |
| `seed` | integer | Seed-værdi anvendt under generering. |

## Related models

- [Infinitalk](https://doitong.com/developers/models/infinitalk.md) (`infinitalk`): from $0.20 / second of output video
- [Infinitalk · Video to Video](https://doitong.com/developers/models/infinitalk/video-to-video.md) (`infinitalk/video-to-video`): from $0.30 / second of output video
- [Kling AI Avatar 2.0 Pro](https://doitong.com/developers/models/kling-video/ai-avatar/v2/pro.md) (`kling-video/ai-avatar/v2/pro`): $0.115 / second of input audio
- [Sync Lipsync 3](https://doitong.com/developers/models/sync-lipsync/v3.md) (`sync-lipsync/v3`): $8.00 / minute of output video
- [VEED Fabric 1.0](https://doitong.com/developers/models/veed/fabric-1.0.md) (`veed/fabric-1.0`): from $0.08 / second of input audio
- [Longcat Single Avatar · Audio to Video](https://doitong.com/developers/models/longcat-single-avatar/audio-to-video.md) (`longcat-single-avatar/audio-to-video`): from $0.15 / second of output video
- [Longcat Single Avatar · Image Audio to Video](https://doitong.com/developers/models/longcat-single-avatar/image-audio-to-video.md) (`longcat-single-avatar/image-audio-to-video`): from $0.15 / second of output video
- [AI Avatar Multi](https://doitong.com/developers/models/ai-avatar/multi.md) (`ai-avatar/multi`): from $0.20 / second of output video

## Links

- HTML page: https://doitong.com/developers/models/infinitalk/single-text
- 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=infinitalk/single-text
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/infinitalk/single-text