Input types: TextOutput: Audio
MireloMirelo SFX 2.0 (Text to Audio)
Generate sound effects and soundscapes from a text prompt with Mirelo SFX 2.0.
Overview
Alongside the unified model APIs, we expose compatibility APIs that take each vendor's original parameters exactly as the vendor defines them — nothing renamed, nothing reshaped on the way through.
That makes them the shortest path onto Picsart if you already work with the vendor directly: the request bodies you've already written keep working as they are. You keep their parameter names and defaults, and you get the vendor's full parameter set rather than the subset that is shared across every model.
The cost is that a request is written for one vendor — switching models later means rewriting it, and results come back in the vendor's own shape. When you'd rather write once and change models freely, use the unified API.
Make a request
Call the workflow with ai.apis.run() in TypeScript, or hit /workflows/{workflow}/execute directly — params is passed through untouched either way.
These endpoints are addressed by workflow name rather than model id: the one in this model's header, since one model runs as one workflow. Authentication is unchanged — your Picsart API key as a bearer token (see Authentication).
import { createClient, ApiRunMode } from '@picsart/ai-sdk';
const ai = createClient({
apiKey: process.env.PICSART_API_KEY,
apiUrl: 'https://api.picsart.com',
});
// Calls the 'mirelo-ai/sfx2.0/text-to-audio' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('mirelo-ai/sfx2.0/text-to-audio', {
prompt: "Heavy rain on a metal roof with distant thunder"
}, {
mode: ApiRunMode.SYNC,
});
console.log(result); // workflow-specific output
console.log(usage?.credits); // amount charged, in $Async (submit & poll)
This model can run longer than the sync limit (~20s). In TypeScript, ai.apis.run(…, { mode: ApiRunMode.ASYNC }) polls for you; over HTTP, submit and poll yourself.
import { createClient, ApiRunMode } from '@picsart/ai-sdk';
const ai = createClient({
apiKey: process.env.PICSART_API_KEY,
apiUrl: 'https://api.picsart.com',
});
// mode: ASYNC submits the job and polls under the hood — you just await.
const { result } = await ai.apis.run('mirelo-ai/sfx2.0/text-to-audio', {
prompt: "Heavy rain on a metal roof with distant thunder"
}, {
mode: ApiRunMode.ASYNC,
});
console.log(result);Parameters
8 parameters, sent inside params. These are the vendor's own names, so they line up one-for-one with the vendor's documentation. Required ones must be supplied; the rest fall back to their defaults.
| Parameter | Type | Required | Default | Details |
|---|---|---|---|---|
num_samplesNumber of variations to generate. Billed per sample. | integer | no | 2 | 1–4 |
durationSeconds of sound to generate, up to the deployment's text-to-SFX maximum | number | no | 30 | 0.1–600 |
negative_promptSounds to keep out of the result | string | no | — | max 1000 chars e.g. music, voices |
upload_audio_bitrate_kbpsBitrate in kbps for an mp3 or aac upload. mp3 is written at exactly this constant rate, one of 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320. aac takes 32 to 256 as a target the encoder may undershoot on mono or sparse audio. Unset keeps the default: mp3 at LAME V0 VBR, aac at a 256 kbps target. Refused with a lossless upload_audio_format. | integer | no | — | 32–320 |
promptWhat the sound effect should sound like | string | yes | — | 1–2000 chars e.g. Heavy rain on a metal roof with distant thunder |
upload_audio_formatAudio format of each file | string | no | wav | wavmp3aacflac |
seedSeed of the first sample; -1 or unset is random | integer | no | — | -1–9223372036854776000 |
optionsPlatform-specific options for safety checks and Picsart Drive integration. | object | no | — | — |
└ safety_checksSafety check configuration. | object | no | — | — |
└ enabledEnable or disable text safety checks. Defaults to true. | boolean | no | true | — |
└ drivePicsart Drive storage options. When provided, the result will be saved to the user's Drive. | object | no | — | — |
└ nameFilename to save the result as in Picsart Drive. | string | yes | — | — |
└ attributesAdditional file metadata attributes. | object | no | — | — |
└ folderDestination folder in Picsart Drive. | object | no | — | — |
Response
Over HTTP the output arrives inside a status envelope, at response.result. ai.apis.run() unwraps that envelope for you and resolves to { result, usage } instead. Either way the result itself is the vendor's own shape.
{
"result": {
"seeds": [
0
],
"model": "sfx-2.0",
"audio": [
{
"content_type": "audio/wav",
"file_name": "generated_audio_1.wav",
"url": "https://di3otfzjg1gxa.cloudfront.net/rain_metal_roof_output_1.wav"
}
]
}
}