# Stable Audio 3 Trainer API

> טרענירט אַ LoRA אויף Stable Audio 3 פֿון אַ zip מיט אַודיאָ־קליפּס און צופּאַסנדיקע טעקסט־קאַפּשאַנז

פֿײַנטיוןירט אַ באַזע־טשעקפּוינט (medium-base, small-music-base אָדער small-sfx-base) אויף אַן `audio_data_url` zip, וווּ יעדער אַודיאָ־טעקע האָט אַ קאַפּשאַן אין אַ גלײַכנאַמיקער `.txt` טעקע. מען קען אַדזשאַסטירן `number_of_steps` (ביז 20000), `learning_rate`, `rank` (1 ביז 256), `adapter_type` און `batch_size`, אָדער ווייטערפֿירן פֿון אַ `.safetensors` טשעקפּוינט. גיט צוריק LoRA־ווייכווארג און אַ קאָנפֿיגוראַציע־טעקע.

- Model id: `stable-audio-3-trainer`
- Made by: Stability AI
- Category: Training
- Output: file
- Price per run: from $0.003 / run (cheapest run $0.003 (3 API credits))
- Run: `POST https://api.doitong.ru/v1/run/stable-audio-3-trainer`
- Quote: `POST https://api.doitong.ru/v1/quote/stable-audio-3-trainer`
- Docs page: https://doitong.com/yi/developers/models/stable-audio-3-trainer

## Pricing

Price: **from $0.003 / 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.

The full example input below costs $3.00 = 3000 API credits (1 run × $3.00).

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/stable-audio-3-trainer` 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 |
|---|---|---|---|---|---|---|
| `audio_data_url` |  | string | yes |  |  | Dataset zip URL, מיט יעדן אַודיאָ/קאַפּשען־פּאָר צוזאַמען אונטער צופּאַסנדיקע באַזע־נעמען: `clip.wav` גייט למשל מיט `clip.txt`. קאַפּשענס מוזן נוצן די `.txt` עקסטענסיע. |
| `model` |  | enum (string) | no | `medium-base` | `medium-base`, `small-music-base`, `small-sfx-base` | באַזע־טשעקפּוינט פֿאַר פֿײַן־טונינג פון Stable Audio 3. |
| `number_of_steps` |  | integer | no | `1000` | 1 – 20,000 | טריט־צאָל פֿאַר LoRA טריינינג. |
| `learning_rate` |  | number | no | `0.0001` | ≤ 0.01, > 0 | לערנען־קורס וואָס AdamW ווענדט אָן אויף LoRA פּאַראַמעטערס. |
| `rank` |  | integer | no | `16` | 1 – 256 | ראַנג פון דעם LoRA אַדאַפּטער. |
| `adapter_type` |  | enum (string) | no | `dora-rows` | `lora`, `dora`, `dora-rows`, `dora-cols`, `bora`, `lora-xs`, `dora-rows-xs`, `dora-cols-xs`, `bora-xs` | פֿאַמיליע פון אַדאַפּטער געניצט פֿאַר LoRA־טרענירונג. |
| `duration` |  | number \| null | no |  | 1 – 380 | קראפּ/פּאַד־לענג אין סעקונדעס, באַגרענעצט אין אַלע פֿאַלן דורך דער נאַטירלעכער טרענירונג־לענג פונעם אויסגעקליבענעם מאָדעל. צושטעלט אַ לענג אָדער לאָז זי אויס צו נוצן דעם לאָנגעסטן קליפּ אין דער דאַטאַסעט, אונטער דער באַגרענעצונג. |
| `batch_size` |  | integer | no | `1` | 1 – 8 | באַטש־גרייס געניצט בעת טרענירונג. |
| `seed` |  | integer | no | `42` | 0 – 2,147,483,647 | זוימען פֿאַר צופֿעליקייט. |
| `base_precision` |  | enum (string) | no | `bf16` | `bf16`, `bfloat16`, `fp16`, `float16` | פּרעציזיע געניצט פֿאַר די פֿאַרפרוירענע באַזע־ווייטונגען; LoRA פּאַראַמעטערס בלײַבן fp32. |
| `include` |  | array of string \| null | no |  |  | סובסטרינגס פון מאָדול־נעמען וואָס באַגרענעצן וווּ LoRA ווערט צוגעגעבן: נאָר צופּאַסנדיקע מאָדולן באַקומען עס. |
| `exclude` |  | array of string \| null | no |  |  | נאָמען־סובסטרינגס געניצט צו אויסשליסן צופּאַסנדיקע מאָדולן. |
| `lora_checkpoint_url` |  | string \| null | no |  |  | אָפּציאָנאַלע URL פון אַ `.safetensors` LoRA טשעקפּוינט, פֿון וועלכן מען קען ווידער אָנהייבן. |
| `pre_encode` |  | boolean | no | `false` |  | פֿאַר־קאָדירונג פון דעם אַודיאָ־אַרכיוו אין SAME לאַטענטן איידער דער LoRA־טרענירונג. |

## Example input

Required parameters only:

```json
{
  "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
}
```

A fuller example:

```json
{
  "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
}
```

## 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/stable-audio-3-trainer?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  }'

# 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/stable-audio-3-trainer?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  }),
});
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 = {
    "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/stable-audio-3-trainer", 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": "stable-audio-3-trainer",
      "input": {
        "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
      },
      "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": "stable-audio-3-trainer",
  "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": 3000,
    "usd": "3.00",
    "charged": 3000,
    "refunded": 0
  },
  "input": {
    "audio_data_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  },
  "output": {
    "lora_file": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    },
    "config_file": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    }
  },
  "outputs": [
    {
      "type": "file",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "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 |
|---|---|---|
| `lora_file` | object {url, content_type, file_name, file_size} | LoRA ווייטונגען טרענירט פֿאַר Stable Audio 3. |
| `config_file` | object {url, content_type, file_name, file_size} | JSON מעטאַדאַטן וואָס באַשרײַבן דעם טרענירונג־לויפֿ און דעם צופּאַסנדיקן מאָדעל פֿאַר אינפֿערענץ. |

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- [Flux 2 Klein 9B Base Trainer](https://doitong.com/developers/models/flux-2-klein-9b-base-trainer/edit.md) (`flux-2-klein-9b-base-trainer/edit`): $0.0139 / step
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- [FLUX 2 Trainer V2](https://doitong.com/developers/models/flux-2-trainer-v2.md) (`flux-2-trainer-v2`): $0.0064 / step
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## Links

- HTML page: https://doitong.com/developers/models/stable-audio-3-trainer
- 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=stable-audio-3-trainer
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/stable-audio-3-trainer