Multilingual V1 | Realistic Voice & TTS API

ElevenLabs — Multilingual V1 Text-to-Speech

Multilingual V1 turns text into natural, expressive speech across multiple languages. It delivers clean pronunciation, smooth pacing, and controllable tone—great for voiceovers, narrations, learning content, and product videos.

🎧 Key Features

Multilingual synthesis with automatic accent handling
Humanlike intonation and timing; clear number/date reading
Tone controls via similarity and stability
Speaker boost for crisper English numerals and units
Large built-in voice library (see the voice list)

💰 Pricing

$0.10 per 1,000 characters
If the input length is less than 1000 characters, it will be counted as 1000 characters to pay.

🚀 How to Use

Enter your text in the text field.
Set voice_id to a built-in voice name (for example: Callum, Alice, Elli). For more options, use the voice list above.
Optional controls • similarity: 0–1 (higher = closer to the base voice’s timbre) • stability: 0–1 (higher = more consistent delivery) • use_speaker_boost: improves English number and unit reading
Click Run to generate and preview your audio.

📝 Notes

Works best with clear punctuation and short sentences; split very long text into segments.
voice_id must match a valid ID, if you see an invalid-voice error, pick one from the voice list.
use_speaker_boost is especially helpful for English financial, time, and measurement reads.

Multilingual v1 API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/elevenlabs/multilingual-v1 with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Multilingual v1 below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/elevenlabs/multilingual-v1" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "voice_id": "Alice",
    "similarity": 1,
    "stability": 0.5,
    "use_speaker_boost": true
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("elevenlabs/multilingual-v1", {
        "voice_id": "Alice",
        "similarity": 1,
        "stability": 0.5,
        "use_speaker_boost": true
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "elevenlabs/multilingual-v1",
    {
    "voice_id": "Alice",
    "similarity": 1,
    "stability": 0.5,
    "use_speaker_boost": true
}
)

print(output["outputs"][0])  # → URL of the generated output

Multilingual v1 API — Frequently asked questions

What is the Multilingual v1 API?

Multilingual v1 is a ElevenLabs model for audio generation, exposed as a REST API on WaveSpeedAI. ElevenLabs Multilingual V1 provides natural-sounding multilingual text-to-speech across many languages. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Multilingual v1 API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/elevenlabs/elevenlabs-multilingual-v1.

How much does Multilingual v1 cost per run?

Multilingual v1 starts at $0.10 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Multilingual v1 accept?

Key inputs: `similarity`, `stability`, `text`, `use_speaker_boost`, `voice_id`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/elevenlabs/elevenlabs-multilingual-v1.

How long does Multilingual v1 take to generate?

Average end-to-end generation time on WaveSpeedAI is around 4 seconds per request — measured across recent runs. Queue time scales with global demand; live status is visible in the prediction record.

Can I use Multilingual v1 outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (ElevenLabs). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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