fal-ai/stable-audio-3/small/music/base/text-to-audio

Text to Audio Small Music Base

Stable Audio 3 Small Music Base is the foundational 459 million parameter checkpoint generating full music compositions up to 2 minutes from text prompts, intended as the unmodified base for fine-tuning.

Inference

Commercial use

Table of contents

JavaScript / Node.js

1. Calling the API

• Install the client
• Setup your API Key
• Submit a request

2. Authentication

• API Key

3. Queue

• Submit a request
• Fetch request status
• Get the result

4. Files

• Data URI (base64)
• Hosted files (URL)
• Uploading files

5. Schema

• Input
• Output
• Other

About

Ep Small Music Base T2A

1. Calling the API

Install the client

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/stable-audio-3/small/music/base/text-to-audio", {
  input: {
    prompt: "An anthemic Pop Rock instrumental that fills your head with nostalgic thoughtfulness"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key

In case your app is running in an environment where you cannot set environment variables, you can set the API Key manually as a client configuration.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("fal-ai/stable-audio-3/small/music/base/text-to-audio", {
  input: {
    prompt: "An anthemic Pop Rock instrumental that fills your head with nostalgic thoughtfulness"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("fal-ai/stable-audio-3/small/music/base/text-to-audio", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("fal-ai/stable-audio-3/small/music/base/text-to-audio", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

5. Schema

Input

{
  "duration": 30,
  "num_inference_steps": 50,
  "guidance_scale": 7,
  "enable_safety_checker": true,
  "output_format": "mp3",
  "bitrate": "192k",
  "prompt": "An anthemic Pop Rock instrumental that fills your head with nostalgic thoughtfulness"
}

Output

{
  "audio": {
    "url": "",
    "content_type": "image/png",
    "file_name": "z9RV14K95DvU.png",
    "file_size": 4404019
  },
  "prompt": ""
}

Other types

LoRAWeight

{
  "path": "<string>",
  "weight_name": "<string>",
  "scale": 1,
  "target": "dit"
}

File

{
  "url": "<string>",
  "content_type": "<string>",
  "file_name": "<string>",
  "file_size": <integer>
}