MireloMirelo SFX 2.0 (Text to Audio) API

Name: Mirelo SFX 2.0 (Text to Audio) API
Author: Mirelo

Generate sound effects and soundscapes from a text prompt with Mirelo SFX 2.0.

Prompt

Duration

Billed at this model’s published rate.

Result

Your generations will appear here

Other models from Mirelo

Same vendor, same API call — the differences are below.

Model	Use case	Price	Resolution	Duration	Added
Mirelo SFX 2.0 (Video to Audio)	Video → Audio	No rate	—	1–600s	Oct 2026
Mirelo SFX 2.0 (Video to Video)	Video → Video	No rate	—	1–600s	Oct 2026

Install the SDK

TypeScript targets Node 20+ and ships with types; Python needs 3.10+ and is async. Over REST there is nothing to install: call https://api.picsart.com from any HTTP client.

bash

npm install @picsart/ai-sdk

Authenticate

Send your Picsart API key as a bearer token. The SDK does it for you once the client is created.

import { createClient } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY, // sent as: Authorization: Bearer <key>
  apiUrl: 'https://api.picsart.com',
});

python

import os

from picsart_ai_sdk import create_client

ai = create_client(
    api_key=os.environ["PICSART_API_KEY"],  # sent as: Authorization: Bearer <key>
    api_url="https://api.picsart.com",
)

Make a request

Call the model by its id. Over REST, one endpoint serves every model: POST /workflows/v1/models/execute with the model id and its input in the body. The outer params is the envelope every workflow takes; the inner one is this model's input, with the same names generate() takes.

import { createClient } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

const result = await ai.generate('mirelo-sfx-2.0-text-to-audio', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  duration: 30
});

console.log(result.url); // audio URL

python

import asyncio
import os

from picsart_ai_sdk import create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        result = await ai.generate("mirelo-sfx-2.0-text-to-audio", {
            "prompt": "A serene mountain lake at golden hour, ultra detailed",
            "duration": 30,
        })

        print(result.url)  # audio URL


asyncio.run(main())

bash

curl -X POST 'https://api.picsart.com/workflows/v1/models/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "mirelo-sfx-2.0-text-to-audio",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "duration": 30
    }
  }
}'

Async (submit & poll)

This model can run longer than the sync limit (~20s). generate() waits for you; to hold on to the job instead, submit it and poll. Over REST, send it to /workflows/v1/models/submit and poll /workflows/v1/models/{taskId}/result until response.status is COMPLETED or FAILED.

import { createClient } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

// Returns the generation id at once — store it to pick the job up later.
const generationId = await ai.submit('mirelo-sfx-2.0-text-to-audio', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  duration: 30
});

// Polls until the job completes; throws if it fails or is cancelled.
const result = await ai.result('mirelo-sfx-2.0-text-to-audio', generationId);

console.log(result.url); // audio URL

python

import asyncio
import os

from picsart_ai_sdk import create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        # Returns the generation id at once — store it to pick the job up later.
        generation_id = await ai.submit("mirelo-sfx-2.0-text-to-audio", {
            "prompt": "A serene mountain lake at golden hour, ultra detailed",
            "duration": 30,
        })

        # Polls until the job completes; raises ApiError if it fails or is cancelled.
        result = await ai.result("mirelo-sfx-2.0-text-to-audio", generation_id)

        print(result.url)  # audio URL


asyncio.run(main())

bash

# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/v1/models/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "mirelo-sfx-2.0-text-to-audio",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "duration": 30
    }
  }
}'
# → { "status": "success", "response": { "id": "task_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/v1/models/task_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'

Parameters

7 parameters, the same for the SDK and for the inner params over REST. Required ones must be supplied; the rest fall back to their defaults.

Parameter	Type	Required	Default	Details
`prompt` The text to speak. For music and sound effects, what to make, in plain language.	`text`	yes	`—`	max 2000 chars
`negativePrompt` What to keep out of the result, such as text, watermarks or blur.	`text`	no	`—`	max 1000 chars
`duration` Length of the output, in seconds.	`range`	no	`30`	1–600 (step 1)
`count` How many results to make in one call. Each one is charged.	`enum`	no	`2`	1, 2, 3, 4
`format` File format of the result.	`enum`	no	`wav`	wav, mp3, aac, flac
`bitrateKbps` Bitrate of the audio, in kbps.	`range`	no	`—`	32–320 (step 1)
`seed` Seed for the random generator. The same seed and inputs repeat a result; leave it out for a random one.	`range`	no	`—`	0–2147483647 (step 1)

Response

generate() resolves once the job completes. An audio URL. Over REST the output is at response.result, inside the gateway's status envelope with the task id, its status and the amount charged.

json

{
  "items": [
    {
      "url": "https://cdn.picsart.com/…/result"
    }
  ],
  "model": "mirelo-sfx-2.0-text-to-audio"
}

json

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "mirelo-sfx-2.0-text-to-audio"
    }
  }
}

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 Python, 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 $

python

import asyncio
import os

from picsart_ai_sdk import ApiRunMode, create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        # Calls the 'mirelo-ai/sfx2.0/text-to-audio' workflow directly — params are sent as-is.
        response = await ai.apis.run("mirelo-ai/sfx2.0/text-to-audio", {
            "prompt": "Heavy rain on a metal roof with distant thunder",
        }, mode=ApiRunMode.SYNC)

        print(response["result"])  # workflow-specific output
        print((response.get("usage") or {}).get("credits"))  # amount charged, in $


asyncio.run(main())

bash

curl -X POST 'https://api.picsart.com/workflows/mirelo-ai/sfx2.0/text-to-audio/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "prompt": "Heavy rain on a metal roof with distant thunder"
  }
}'

Async (submit & poll)

This model can run longer than the sync limit (~20s). In the SDK, ai.apis.run() with 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);

python

import asyncio
import os

from picsart_ai_sdk import ApiRunMode, create_client


async def main() -> None:
    async with create_client(
        api_key=os.environ["PICSART_API_KEY"],
        api_url="https://api.picsart.com",
    ) as ai:
        # mode=ASYNC submits the job and polls under the hood — you just await.
        response = await ai.apis.run("mirelo-ai/sfx2.0/text-to-audio", {
            "prompt": "Heavy rain on a metal roof with distant thunder",
        }, mode=ApiRunMode.ASYNC)

        print(response["result"])


asyncio.run(main())

bash

# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/mirelo-ai/sfx2.0/text-to-audio/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "prompt": "Heavy rain on a metal roof with distant thunder"
  }
}'
# → { "status": "success", "response": { "id": "wf_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/mirelo-ai/sfx2.0/text-to-audio/wf_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'

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
`prompt` What the sound effect should sound like	`string`	yes	`—`	1–2000 chars e.g. `Heavy rain on a metal roof with distant thunder`
`upload_audio_format` Audio format of each file	`string`	no	`wav`	`wavmp3aacflac`
`duration` Seconds of sound to generate, up to the deployment's text-to-SFX maximum	`number`	no	`30`	0.1–600
`negative_prompt` Sounds to keep out of the result	`string`	no	`—`	max 1000 chars e.g. `music, voices`
`seed` Seed of the first sample; -1 or unset is random	`integer`	no	`—`	-1–9223372036854776000
`upload_audio_bitrate_kbps` Bitrate 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
`num_samples` Number of variations to generate. Billed per sample.	`integer`	no	`2`	1–4
`options` Platform-specific options for safety checks and Picsart Drive integration.	`object`	no	`—`	—
└`safety_checks` Safety check configuration.	`object`	no	`—`	—
└`enabled` Enable or disable text safety checks. Defaults to true.	`boolean`	no	`true`	—
└`drive` Picsart Drive storage options. When provided, the result will be saved to the user's Drive.	`object`	no	`—`	—
└`name` Filename to save the result as in Picsart Drive.	`string`	yes	`—`	—
└`attributes` Additional file metadata attributes.	`object`	no	`—`	—
└`folder` Destination 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.

json

{
  "result": {
    "audio": [
      {
        "file_name": "generated_audio_1.wav",
        "content_type": "audio/wav",
        "url": "https://di3otfzjg1gxa.cloudfront.net/rain_metal_roof_output_1.wav"
      }
    ],
    "seeds": [
      0
    ],
    "model": "sfx-2.0"
  }
}

json

{
  "status": "success",
  "response": {
    "id": "wf_abc123",
    "status": "COMPLETED",
    "result": {
      "audio": [
        {
          "file_name": "generated_audio_1.wav",
          "content_type": "audio/wav",
          "url": "https://di3otfzjg1gxa.cloudfront.net/rain_metal_roof_output_1.wav"
        }
      ],
      "seeds": [
        0
      ],
      "model": "sfx-2.0"
    }
  }
}

MMireloMirelo SFX 2.0 (Text to Audio) API

Params

Result

Other models from Mirelo

Install the SDK

Authenticate

Make a request

Async (submit & poll)

Parameters

Response

Overview

Make a request

Async (submit & poll)

Parameters

Response

Rates

MireloMirelo SFX 2.0 (Text to Audio) API