ElevenLabsEleven STS v2 API

Name: Eleven STS v2 API
Price: 0.132 USD
Author: ElevenLabs

Swap your voice to a different speaker while keeping timing and emotion.

Speech Audio

Billed at this model’s published rate.

Result

Your generations will appear here

Other models from ElevenLabs

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

Model	Use case	Price	Resolution	Duration	Added
Eleven Dialogue v4	Text → Speech	from $0.132 / min	—	—	Sep 2026
Eleven v4	Text → Speech	from $0.08 / 1K chars	—	—	Sep 2026
Eleven v4 Turbo	Text → Speech	from $0.145455 / 1K chars	—	—	Sep 2026
Eleven Scribe v2	Audio → Text	from $0.008 / min	—	—	Sep 2026
Eleven Video to Music	Video → Audio	from $0.60 / min	—	—	Sep 2026
Eleven Dialogue v3	Text → Speech	from $0.132 / min	—	—	Sep 2026
ElevenLabs Music v2	Music	from $0.60 / min	—	10–600s	Jul 2026
Eleven Audio Isolation	Audio → Speech	from $0.132 / min	—	—	Mar 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('eleven-sts-v2', {
  audioUrl: "https://cdn.example.com/input.mp3"
});

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("eleven-sts-v2", {
            "audioUrl": "https://cdn.example.com/input.mp3",
        })

        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": "eleven-sts-v2",
    "params": {
      "audioUrl": "https://cdn.example.com/input.mp3"
    }
  }
}'

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('eleven-sts-v2', {
  audioUrl: "https://cdn.example.com/input.mp3"
});

// Polls until the job completes; throws if it fails or is cancelled.
const result = await ai.result('eleven-sts-v2', 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("eleven-sts-v2", {
            "audioUrl": "https://cdn.example.com/input.mp3",
        })

        # Polls until the job completes; raises ApiError if it fails or is cancelled.
        result = await ai.result("eleven-sts-v2", 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": "eleven-sts-v2",
    "params": {
      "audioUrl": "https://cdn.example.com/input.mp3"
    }
  }
}'
# → { "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
`audioUrl` The audio to work on, as a URL.	`file (audio)`	yes	`—`	—
`voiceId` The voice to speak with, by id from the voices catalog.	`catalog`	no	`JBFqnCBsd6RMkjVDRZzb`	options from elevenlabs/v1/catalog/voices
`removeBackgroundNoise` Clean background noise from the input audio.	`boolean`	no	`false`	—
`stability` How steady the voice is. Lower is more expressive, higher more consistent.	`range`	no	`—`	0–1 (step 0.05)
`similarityBoost` How closely the voice matches its original. Higher can add artifacts.	`range`	no	`—`	0–1 (step 0.05)
`styleExaggeration` Style Exaggeration	`range`	no	`—`	0–1 (step 0.05)
`speed` Speaking speed, relative to normal.	`range`	no	`—`	0.1–5 (step 0.05)

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": "eleven-sts-v2"
}

json

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "eleven-sts-v2"
    }
  }
}

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 'elevenlabs/v1/speech-to-speech' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('elevenlabs/v1/speech-to-speech', {
  voice_id: "21m00Tcm4TlvDq8ikWAM",
  audio_url: "https://cdn.example.com/audio/input.mp3"
}, {
  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 'elevenlabs/v1/speech-to-speech' workflow directly — params are sent as-is.
        response = await ai.apis.run("elevenlabs/v1/speech-to-speech", {
            "voice_id": "21m00Tcm4TlvDq8ikWAM",
            "audio_url": "https://cdn.example.com/audio/input.mp3",
        }, 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/elevenlabs/v1/speech-to-speech/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "voice_id": "21m00Tcm4TlvDq8ikWAM",
    "audio_url": "https://cdn.example.com/audio/input.mp3"
  }
}'

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('elevenlabs/v1/speech-to-speech', {
  voice_id: "21m00Tcm4TlvDq8ikWAM",
  audio_url: "https://cdn.example.com/audio/input.mp3"
}, {
  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("elevenlabs/v1/speech-to-speech", {
            "voice_id": "21m00Tcm4TlvDq8ikWAM",
            "audio_url": "https://cdn.example.com/audio/input.mp3",
        }, mode=ApiRunMode.ASYNC)

        print(response["result"])


asyncio.run(main())

bash

# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/elevenlabs/v1/speech-to-speech/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "voice_id": "21m00Tcm4TlvDq8ikWAM",
    "audio_url": "https://cdn.example.com/audio/input.mp3"
  }
}'
# → { "status": "success", "response": { "id": "wf_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/elevenlabs/v1/speech-to-speech/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
`voice_id` ID of the ElevenLabs voice to use	`string`	yes	`—`	e.g. `21m00Tcm4TlvDq8ikWAM`
`audio_url` URL of the audio file to use as input	`string`	yes	`—`	e.g. `https://cdn.example.com/audio/input.mp3`
`model_id` The model to use for speech-to-speech	`string`	no	`eleven_english_sts_v2`	`eleven_multilingual_sts_v2eleven_english_sts_v2`
`output_format` Output audio format	`string`	no	`mp3_44100_128`	`mp3_22050_32mp3_44100_32mp3_44100_64mp3_44100_96mp3_44100_128mp3_44100_192mp3_48000_192pcm_16000pcm_22050pcm_24000pcm_44100pcm_48000`
`voice_settings` Voice settings to override stored defaults	`object`	no	`—`	—
└`stability` Voice consistency (0-1). Lower = more variation.	`number`	no	`—`	—
└`similarity_boost` Adherence to original voice (0-1)	`number`	no	`—`	—
└`style` Style exaggeration intensity (0-1)	`number`	no	`—`	—
└`speed` Speech rate multiplier	`number`	no	`1`	—
`seed` Seed for deterministic generation (0-4294967295)	`number`	no	`—`	—
`remove_background_noise` Whether to remove background noise from the input audio	`boolean`	no	`false`	—
`options` Options controlling drive integration	`object`	no	`—`	—
└`safety_checks` Safety check settings	`object`	no	`—`	—
└`enabled` Whether to run content moderation. Defaults to true.	`boolean`	no	`—`	—
└`drive` Save result to Picsart Drive	`object`	no	`—`	—
└`name` File name in Picsart Drive	`string`	yes	`—`	—
└`attributes` Custom attributes to attach to the file	`object`	no	`—`	—
└`folder` Target folder in Picsart Drive	`object`	no	`—`	—
└`inputs_transformation` Input transformation settings	`object`	no	`—`	—
└`downscale_oversized_images` Whether to downscale oversized input images. Defaults to false.	`boolean`	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": {
    "url": "https://cdn.picsart.com/…/result.mp3",
    "mimeType": "audio/mpeg",
    "driveFile": {
      "id": "wf_abc123"
    }
  }
}

json

{
  "status": "success",
  "response": {
    "id": "wf_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result.mp3",
      "mimeType": "audio/mpeg",
      "driveFile": {
        "id": "wf_abc123"
      }
    }
  }
}

ElevenLabsEleven STS v2 API

Params

Result

Other models from ElevenLabs

Install the SDK

Authenticate

Make a request

Async (submit & poll)

Parameters

Response

Overview

Make a request

Async (submit & poll)

Parameters

Response

Rates