# Infinitalk · Single Text API

> Video ya avatari inayozungumza kutoka picha na maandishi yaliyochapwa, yakitamkwa na sauti iliyojengewa ndani iliyochaguliwa

Badala ya faili la sauti, toleo hili huchukua `text_input` na `voice` (kama Aria, Roger au Sarah) ili kuyatamka, kisha husawazisha midomo ya avatari kutoka `image_url`. `prompt` huongoza video. `num_frames` huwa kati ya 41 na 721, `resolution` ni 480p au 720p, na `acceleration` inaweza kuwa none, regular au 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/sw/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 ya picha chanzo, huku uwiano wa pande uliochaguliwa ukiamua ikiwa uchakataji wa awali unahitajika: kutolingana husababisha kubadilisha ukubwa kisha kukata katikati. |
| `text_input` |  | string | yes |  |  | Maandishi yanayoelekeza mchakato wa uzalishaji wa video. |
| `voice` |  | enum (string) | yes |  | `Aria`, `Roger`, `Sarah`, `Laura`, `Charlie`, `George`, `Callum`, `River`, `Liam`, `Charlotte`, `Alice`, `Matilda`, `Will`, `Jessica`, `Eric`, `Chris`, `Brian`, `Daniel`, `Lily`, `Bill` | Sauti iliyochaguliwa kwa usanisi wa matamshi. |
| `prompt` |  | string | yes |  |  | Maelekezo ya maandishi yanayoongoza uzalishaji wa video. |
| `num_frames` |  | integer | no | `145` | 41 – 721 | Idadi ya fremu za uzalishaji, ikiwa na masafa yanayoruhusiwa ya 41–721. |
| `resolution` |  | enum (string) | no | `480p` | `480p`, `720p` | Mwonekano wa video ya tokeo; 480p na 720p pekee ndizo zinazotumika. |
| `seed` |  | integer | no | `42` | 0 – 4,294,967,295 | Seed inayofanya uzalishaji uweze kurudiwa. Kuiweka kuwa None huchagua seed bila mpangilio. |
| `acceleration` |  | enum (string) | no | `regular` | `none`, `regular`, `high` | Kiwango cha kuongeza kasi kinachotumika wakati wa uzalishaji. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Ukaguzi unaweza kulegezwa kwa kuweka false, ikiwa mpigaji simu ameidhinishwa. |

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} | Faili ya video iliyozalishwa. |
| `seed` | integer | Thamani ya seed inayotumika wakati wa uzalishaji. |

## 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