---
title: Eleven Multilingual v1 | Runware Docs
url: https://runware.ai/docs/models/elevenlabs-multilingual-v1
description: Multilingual text to speech for early global voice apps
---
# Eleven Multilingual v1

Eleven Multilingual v1 is an early multilingual text to speech model from ElevenLabs. It converts text to natural speech across major languages. It suits legacy integrations, experimentation, and non critical production flows that do not need the quality of v2.

- **ID**: `elevenlabs:21@1`
- **Status**: live
- **Creator**: ElevenLabs
- **Release Date**: April 27, 2023
- **Capabilities**: Text to Audio

## Request Parameters

**API Options**

Platform-level options for task execution and delivery.

### [taskType](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `audioInference`

Identifier for the type of task being performed

### [taskUUID](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

### [outputType](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-outputtype)

- **Type**: `string`
- **Default**: `URL`

Audio output type.

**Allowed values**: `URL` `base64Data` `dataURI`

### [outputFormat](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-outputformat)

- **Type**: `string`
- **Default**: `MP3`

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

- \`MP3\`: Compressed audio, smaller file size.
- \`WAV\`: Uncompressed, high-quality audio.
- \`FLAC\`: Lossless compression.
- \`OGG\`: Open-source compressed audio format (Vorbis codec).

**Allowed values**: `MP3` `WAV` `FLAC` `OGG`

### [audioSettings](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-audiosettings)

- **Path**: `audioSettings.bitrate`
- **Type**: `object (3 properties)`

Audio encoding settings for controlling the bitrate, number of channels, and sample rate of the generated audio. Only applicable for lossy output formats (`MP3` and `OGG`). When using lossless formats (`WAV` or `FLAC`), this parameter must not be provided.

The available sample rates and valid bitrate ranges depend on the output format. For `OGG`, bitrate limits also vary by the number of channels.

**MP3 bitrate limits**:

Bitrate limits for MP3 are the same regardless of mono or stereo.

| Sample Rate | Min Bitrate | Max Bitrate |
| --- | --- | --- |
| 8,000 Hz | 8 kbps | 64 kbps |
| 11,025 Hz | 8 kbps | 64 kbps |
| 12,000 Hz | 8 kbps | 64 kbps |
| 16,000 Hz | 8 kbps | 160 kbps |
| 22,050 Hz | 8 kbps | 160 kbps |
| 24,000 Hz | 8 kbps | 160 kbps |
| 32,000 Hz | 32 kbps | 320 kbps |
| 44,100 Hz | 32 kbps | 320 kbps |
| 48,000 Hz | 32 kbps | 320 kbps |

**OGG bitrate limits — Mono (1 channel)**:

| Sample Rate | Min Bitrate | Max Bitrate |
| --- | --- | --- |
| 8,000 Hz | 8 kbps | 40 kbps |
| 12,000 Hz | 16 kbps | 48 kbps |
| 16,000 Hz | 16 kbps | 96 kbps |
| 24,000 Hz | 16 kbps | 80 kbps |
| 48,000 Hz | 32 kbps | 224 kbps |

**OGG bitrate limits — Stereo (2 channels)**:

| Sample Rate | Min Bitrate | Max Bitrate |
| --- | --- | --- |
| 8,000 Hz | 16 kbps | 80 kbps |
| 12,000 Hz | 16 kbps | 96 kbps |
| 16,000 Hz | 24 kbps | 192 kbps |
| 24,000 Hz | 32 kbps | 160 kbps |
| 48,000 Hz | 48 kbps | 256 kbps |

> [!NOTE]
> **Lossless formats**: When `outputFormat` is set to `WAV` or `FLAC`, the `audioSettings` parameter is not available since these formats produce uncompressed or lossless audio with no configurable encoding settings.

#### [bitrate](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-audiosettings-bitrate)

- **Path**: `audioSettings.bitrate`
- **Type**: `integer`
- **Min**: `8`

Audio bitrate in kbps.

#### [channels](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-audiosettings-channels)

- **Path**: `audioSettings.channels`
- **Type**: `integer`
- **Default**: `2`

Number of audio channels. 1 for mono, 2 for stereo.

**Allowed values**: `1` `2`

#### [sampleRate](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-audiosettings-samplerate)

- **Path**: `audioSettings.sampleRate`
- **Type**: `integer`

Audio sample rate in Hz.

### [webhookURL](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-webhookurl)

- **Type**: `string`
- **Format**: `URI`

Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

**Learn more** (1 resource):

- [Webhooks](https://runware.ai/docs/platform/webhooks) (platform)

### [deliveryMethod](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-deliverymethod)

- **Type**: `string`
- **Default**: `sync`

Determines how the API delivers task results.

**Allowed values**:

- `sync` Returns complete results directly in the API response.
- `async` Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.

**Learn more** (1 resource):

- [Task Polling](https://runware.ai/docs/platform/task-polling) (platform)

### [uploadEndpoint](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-uploadendpoint)

- **Type**: `string`
- **Format**: `URI`

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

**Common use cases:**

- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- **CDN integration**: Upload to content delivery networks for immediate distribution.

```text
// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg
```

The content data will be sent as the request body to the specified URL when generation is complete.

### [ttl](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-ttl)

- **Type**: `integer`
- **Min**: `60`

Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.

### [includeCost](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-includecost)

- **Type**: `boolean`
- **Default**: `false`

Include task cost in the response.

### [numberResults](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-numberresults)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `4`
- **Default**: `1`

Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

**Generation Parameters**

Core parameters for controlling the generated content.

### [model](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-model)

- **Type**: `string`
- **Required**: true
- **Value**: `elevenlabs:21@1`

Identifier of the model to use for generation.

**Learn more** (3 resources):

- [Text To Image: Model Selection The Foundation Of Generation](https://runware.ai/docs/guides/text-to-image#model-selection-the-foundation-of-generation) (guide)
- [Image Inpainting: Model Specialized Inpainting Models](https://runware.ai/docs/guides/image-inpainting#model-specialized-inpainting-models) (guide)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/guides/image-outpainting#other-critical-parameters) (guide)

### [seed](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-seed)

- **Type**: `integer`
- **Min**: `0`
- **Max**: `4294967295`

Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.

### [speech](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-speech)

- **Path**: `speech.text`
- **Type**: `object (2 properties)`
- **Required**: true

Settings for speech generation.

#### [text](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-speech-text)

- **Path**: `speech.text`
- **Type**: `string`
- **Max**: `10000`

Text to convert to speech.

#### [language](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-speech-language)

- **Path**: `speech.language`
- **Type**: `string`
- **Min**: `1`

Language code for speech generation.

**Allowed values**: `en` `de` `pl` `es` `it` `fr` `pt` `hi` `ar`

**Provider Settings**

Parameters specific to this model provider. These must be nested inside the \`providerSettings.elevenlabs\` object.

### [textToSpeech](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech)

- **Path**: `providerSettings.elevenlabs.textToSpeech`
- **Type**: `object (9 properties)`

Provider-specific settings for ElevenLabs text-to-speech generation.

#### [voiceSettings](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-voicesettings)

- **Path**: `providerSettings.elevenlabs.textToSpeech.voiceSettings`
- **Type**: `object (4 properties)`

Voice settings overriding stored settings for the given voice. Applied only on the given request.

##### [stability](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-voicesettings-stability)

- **Path**: `providerSettings.elevenlabs.textToSpeech.voiceSettings.stability`
- **Type**: `float`
- **Min**: `0`
- **Max**: `1`

Controls voice stability and randomness between each generation. Lower values introduce broader emotional range, higher values produce a more consistent tone.

##### [useSpeakerBoost](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-voicesettings-usespeakerboost)

- **Path**: `providerSettings.elevenlabs.textToSpeech.voiceSettings.useSpeakerBoost`
- **Type**: `boolean`

Boosts similarity to the original speaker at a slight increase in computational load and latency.

##### [similarityBoost](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-voicesettings-similarityboost)

- **Path**: `providerSettings.elevenlabs.textToSpeech.voiceSettings.similarityBoost`
- **Type**: `float`
- **Min**: `0`
- **Max**: `1`

Controls how closely the AI adheres to the original voice when attempting to replicate it.

##### [style](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-voicesettings-style)

- **Path**: `providerSettings.elevenlabs.textToSpeech.voiceSettings.style`
- **Type**: `float`
- **Min**: `0`
- **Max**: `1`

Controls style exaggeration of the voice. Higher values amplify the style of the original speaker but may increase latency.

#### [previousText](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-previoustext)

- **Path**: `providerSettings.elevenlabs.textToSpeech.previousText`
- **Type**: `string`
- **Max**: `1000`

Text that came before the current request. Improves speech continuity when concatenating multiple generations.

#### [nextText](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-nexttext)

- **Path**: `providerSettings.elevenlabs.textToSpeech.nextText`
- **Type**: `string`
- **Max**: `1000`

Text that comes after the current request. Improves speech continuity when concatenating multiple generations.

#### [applyTextNormalization](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-applytextnormalization)

- **Path**: `providerSettings.elevenlabs.textToSpeech.applyTextNormalization`
- **Type**: `string`
- **Default**: `auto`

Controls text normalization behavior (e.g., spelling out numbers).

**Allowed values**:

- `auto` Automatically decides whether to apply text normalization.
- `on` Always applies text normalization.
- `off` Skips text normalization entirely.

#### [applyLanguageTextNormalization](https://runware.ai/docs/models/elevenlabs-multilingual-v1#request-providersettings-elevenlabs-texttospeech-applylanguagetextnormalization)

- **Path**: `providerSettings.elevenlabs.textToSpeech.applyLanguageTextNormalization`
- **Type**: `boolean`
- **Default**: `false`

Enables language-specific text normalization for proper pronunciation. Currently only supported for Japanese. Warning: can significantly increase latency.

## Response Parameters

### [taskType](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `audioInference`

Type of the task.

### [taskUUID](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the task.

### [audioUUID](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-audiouuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the output audio.

### [audioURL](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-audiourl)

- **Type**: `string`
- **Format**: `URI`

URL of the output audio.

### [audioBase64Data](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-audiobase64data)

- **Type**: `string`

Base64-encoded audio data.

### [audioDataURI](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-audiodatauri)

- **Type**: `string`
- **Format**: `URI`

Data URI of the output audio.

### [seed](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-seed)

- **Type**: `integer`

The seed used for generation. If none was provided, shows the randomly generated seed.

### [cost](https://runware.ai/docs/models/elevenlabs-multilingual-v1#response-cost)

- **Type**: `float`

Task cost in USD. Present when `includeCost` is set to `true` in the request.

## Examples

### Warsaw Night Radio Bulletin (Text to Audio)

[Listen to audio](https://assets.runware.ai/examples/elevenlabs-multilingual-v1/a6e71557-d7f8-4654-a368-2cde2bd8538c.mp3)

**Request**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "b89a4aa7-32d6-4a91-b382-6cda775d9e1e",
  "model": "elevenlabs:21@1",
  "seed": 80668,
  "speech": {
    "language": "pl",
    "text": "Dobry wieczór, tu Radio Nad Rzeką. Jest dwudziesta trzecia siedemnaście. W centrum miasta tramwaje linii 4 i 18 kursują z niewielkim opóźnieniem z powodu prac torowych przy placu Wolności. Na bulwarach trwa nocny kiermasz płyt, książek i starych aparatów fotograficznych, a przy wejściu od strony mostu ustawiono dodatkowe światła dla pieszych. Jutro od szóstej rano spodziewane są silniejsze podmuchy wiatru, dlatego służby miejskie proszą o zabezpieczenie rowerów, lekkich mebli balkonowych i szyldów. A teraz krótka wiadomość od wolontariuszy: w domu kultury na ulicy Siennej do północy trwa zbiórka koców, latarek i baterii dla rodzin z zalanych terenów. Jeśli jesteś w pobliżu, zajrzyj. Zostań z nami; za chwilę usłyszysz rozmowę z zegarmistrzem, który od czterdziestu lat naprawia mechaniczne budziki."
  },
  "providerSettings": {
    "elevenlabs": {
      "textToSpeech": {
        "voiceSettings": {
          "stability": 0.46,
          "similarityBoost": 0.72,
          "style": 0.41,
          "useSpeakerBoost": true
        },
        "applyTextNormalization": "auto"
      }
    }
  }
}
```

**Response**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "b89a4aa7-32d6-4a91-b382-6cda775d9e1e",
  "audioUUID": "3c92c2e3-6b81-4f08-bfc8-e36e6426665d",
  "audioURL": "https://am.runware.ai/audio/os/a12d13/ws/5/ai/3c92c2e3-6b81-4f08-bfc8-e36e6426665d.mp3",
  "seed": 80668,
  "cost": 0.14217
}
```

---

### Harbor Radio Weather Bulletin (Text to Audio)

[Listen to audio](https://assets.runware.ai/examples/elevenlabs-multilingual-v1/8ca29409-3ce5-4dd5-bc03-bfd929584976.mp3)

**Request**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "2aafed3a-45bc-4e06-955d-11e206e459d7",
  "model": "elevenlabs:21@1",
  "seed": 7881,
  "speech": {
    "text": "Boletim costeiro das seis e quarenta e cinco. Atenção, embarcações de pequeno porte entre Viana do Castelo e Figueira da Foz: vento de noroeste moderado, com rajadas mais fortes ao largo durante a próxima hora. A ondulação mantém-se entre um vírgula cinco e dois metros, com melhoria gradual ao fim da manhã. No porto, a visibilidade é boa, mas bancos de neblina poderão formar-se junto à barra após o amanhecer. Recomenda-se verificação de cabos, luzes de navegação e equipamento de comunicação antes da saída. Temperatura do ar: dezasseis graus. Temperatura da água: catorze. Próxima atualização às oito em ponto.",
    "language": "pt"
  },
  "providerSettings": {
    "elevenlabs": {
      "textToSpeech": {
        "voiceSettings": {
          "stability": 0.72,
          "similarityBoost": 0.78,
          "style": 0.24,
          "useSpeakerBoost": true
        },
        "applyTextNormalization": "on"
      }
    }
  }
}
```

**Response**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "2aafed3a-45bc-4e06-955d-11e206e459d7",
  "audioUUID": "ecbef2a7-0fff-4bcb-98eb-b1ffd62bbeda",
  "audioURL": "https://am.runware.ai/audio/os/a18d05/ws/5/ai/ecbef2a7-0fff-4bcb-98eb-b1ffd62bbeda.mp3",
  "seed": 7881,
  "cost": 0.1105
}
```

---

### Monsoon Platform Farewell Broadcast (Text to Audio)

[Listen to audio](https://assets.runware.ai/examples/elevenlabs-multilingual-v1/57594053-2ee1-464d-a1c9-331a6c5f8a1c.mp3)

**Request**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "eb608037-adbe-4990-9d39-5af0ffae8075",
  "model": "elevenlabs:21@1",
  "seed": 54164,
  "speech": {
    "text": "सभी यात्रियों का ध्यान आकर्षित किया जाता है। प्लेटफ़ॉर्म संख्या तीन पर खड़ी विशेष रात्रि सेवा कुछ ही मिनटों में प्रस्थान करेगी। जिन परिवारों ने अभी तक विदा नहीं ली है, कृपया शीघ्रता करें। और उस छोटे लड़के के लिए, जिसकी लाल पतंग प्रतीक्षालय की बेंच पर रह गई है, चिंता मत करो। वह सुरक्षित रख ली गई है। जब अगली बार लौटोगे, तुम्हारी पतंग भी यहीं तुम्हारा इंतज़ार करेगी। शुभ यात्रा, और अपने लोगों को पहुँचते ही समाचार देना मत भूलिएगा।",
    "language": "hi"
  },
  "providerSettings": {
    "elevenlabs": {
      "textToSpeech": {
        "voiceSettings": {
          "stability": 0.42,
          "similarityBoost": 0.78,
          "style": 0.56,
          "useSpeakerBoost": true
        },
        "applyTextNormalization": "on"
      }
    }
  }
}
```

**Response**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "eb608037-adbe-4990-9d39-5af0ffae8075",
  "audioUUID": "df699017-8ce0-46e6-8e66-214c1fbe8a03",
  "audioURL": "https://am.runware.ai/audio/os/a21d05/ws/5/ai/df699017-8ce0-46e6-8e66-214c1fbe8a03.mp3",
  "seed": 54164,
  "cost": 0.07824
}
```

---

### Midnight Train Announcement Monologue (Text to Audio)

[Listen to audio](https://assets.runware.ai/examples/elevenlabs-multilingual-v1/034c7741-fab5-4c8a-9f75-3d3742e44eac.mp3)

**Request**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "cf742e50-ef77-4ee4-b036-c8fcd7069c63",
  "model": "elevenlabs:21@1",
  "seed": 48961,
  "speech": {
    "text": "Atención, pasajeros del tren nocturno con destino a Porto: la salida se retrasa doce minutos por una revisión técnica de rutina. Mientras esperan, mantengan sus billetes a mano y escuchen con atención. En el andén tres, una maleta azul ha sido entregada en objetos perdidos. Un niño con abrigo amarillo busca a su abuelo cerca del reloj central. Y aunque la estación parezca medio dormida, todavía guarda historias en cada banco, en cada paso, en cada despedida. Gracias por su paciencia.",
    "language": "es"
  },
  "providerSettings": {
    "elevenlabs": {
      "textToSpeech": {
        "voiceSettings": {
          "stability": 0.42,
          "similarityBoost": 0.78,
          "style": 0.56,
          "useSpeakerBoost": true
        },
        "applyTextNormalization": "auto",
        "previousText": "Se ruega a los viajeros revisar los paneles de salida para posibles cambios de vía.",
        "nextText": "El servicio reanudará su horario habitual a partir de la una de la madrugada."
      }
    }
  }
}
```

**Response**:

```json
{
  "taskType": "audioInference",
  "taskUUID": "cf742e50-ef77-4ee4-b036-c8fcd7069c63",
  "audioUUID": "da332322-b785-4b34-a860-deeee77b1a4a",
  "audioURL": "https://am.runware.ai/audio/os/a10d08/ws/5/ai/da332322-b785-4b34-a860-deeee77b1a4a.mp3",
  "seed": 48961,
  "cost": 0.08314
}
```