# Text to Speech transformation

**POST** `/v1/speak`

Convert text into natural-sounding speech using Deepgram's TTS REST API

Base URL: `https://agent.deepgram.com`

Tags: `audio`

## Authorization

| Option | Scheme | Type | Sent as | Scopes |
| --- | --- | --- | --- | --- |
| Option 1 | `ApiKeyAuth` | `apiKey` | header `Authorization` | — |

## Query parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `callback` | `string` | No | URL to which we'll make the callback request |
| `callback_method` | `string` | No | HTTP method by which the callback request will be made Allowed values: `POST`, `PUT`. |
| `mip_opt_out` | `boolean` | No | Opts out requests from the Deepgram Model Improvement Program. Refer to our Docs for pricing impacts before setting this to true. https://dpgr.am/deepgram-mip |
| `tag` | — | No | Label your requests for the purpose of identification during usage reporting |
| `bit_rate` | — | No | The bitrate of the audio in bits per second. Choose from predefined ranges or specific values based on the encoding type. |
| `container` | — | No | Container specifies the file format wrapper for the output audio. The available options depend on the encoding type. |
| `encoding` | — | No | Encoding allows you to specify the expected encoding of your audio output |
| `model` | `string` | No | AI model used to process submitted text Allowed values: `aura-angus-en`, `aura-arcas-en`, `aura-asteria-en`, `aura-athena-en`, `aura-helios-en`, `aura-hera-en`, `aura-luna-en`, `aura-orion-en`, `aura-orpheus-en`, `aura-perseus-en`, `aura-stella-en`, `aura-zeus-en`, `aura-2-amalthea-en`, `aura-2-andromeda-en`, `aura-2-apollo-en`, `aura-2-arcas-en`, `aura-2-aries-en`, `aura-2-asteria-en`, `aura-2-athena-en`, `aura-2-atlas-en`, `aura-2-aurora-en`, `aura-2-callista-en`, `aura-2-cora-en`, `aura-2-cordelia-en`, `aura-2-delia-en`, `aura-2-draco-en`, `aura-2-electra-en`, `aura-2-harmonia-en`, `aura-2-helena-en`, `aura-2-hera-en`, `aura-2-hermes-en`, `aura-2-hyperion-en`, `aura-2-iris-en`, `aura-2-janus-en`, `aura-2-juno-en`, `aura-2-jupiter-en`, `aura-2-luna-en`, `aura-2-mars-en`, `aura-2-minerva-en`, `aura-2-neptune-en`, `aura-2-odysseus-en`, `aura-2-ophelia-en`, `aura-2-orion-en`, `aura-2-orpheus-en`, `aura-2-pandora-en`, `aura-2-phoebe-en`, `aura-2-pluto-en`, `aura-2-saturn-en`, `aura-2-selene-en`, `aura-2-thalia-en`, `aura-2-theia-en`, `aura-2-vesta-en`, `aura-2-zeus-en`, `aura-2-agustina-es`, `aura-2-alvaro-es`, `aura-2-antonia-es`, `aura-2-aquila-es`, `aura-2-carina-es`, `aura-2-celeste-es`, `aura-2-diana-es`, `aura-2-estrella-es`, `aura-2-gloria-es`, `aura-2-javier-es`, `aura-2-luciano-es`, `aura-2-nestor-es`, `aura-2-olivia-es`, `aura-2-selena-es`, `aura-2-silvia-es`, `aura-2-sirio-es`, `aura-2-valerio-es`, `aura-2-aurelia-de`, `aura-2-elara-de`, `aura-2-fabian-de`, `aura-2-julius-de`, `aura-2-kara-de`, `aura-2-lara-de`, `aura-2-viktoria-de`, `aura-2-beatrix-nl`, `aura-2-cornelia-nl`, `aura-2-daphne-nl`, `aura-2-hestia-nl`, `aura-2-lars-nl`, `aura-2-leda-nl`, `aura-2-rhea-nl`, `aura-2-roman-nl`, `aura-2-sander-nl`, `aura-2-agathe-fr`, `aura-2-hector-fr`, `aura-2-cesare-it`, `aura-2-cinzia-it`, `aura-2-demetra-it`, `aura-2-dionisio-it`, `aura-2-elio-it`, `aura-2-flavio-it`, `aura-2-livia-it`, `aura-2-maia-it`, `aura-2-melia-it`, `aura-2-ama-ja`, `aura-2-ebisu-ja`, `aura-2-fujin-ja`, `aura-2-izanami-ja`, `aura-2-uzume-ja`. |
| `sample_rate` | — | No | Sample Rate specifies the sample rate for the output audio. Based on the encoding, different sample rates are supported. For some encodings, the sample rate is not configurable |
| `speed` | `number` (double) | No | Speaking rate multiplier that adjusts the pace of generated speech while preserving natural prosody and voice quality. Not yet supported in all languages. |

## Request body

Optional. Media type: `application/json`

Transform text to speech

### Example request body

```json
{
  "text": "string"
}
```

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `200` | Successful text-to-speech transformation | `application/json` |
| `400` | Invalid Request | `application/json` |

### Example response: 200 — Successful text-to-speech transformation

```json
{}
```

### Example response: 400 — Invalid Request

```json
{
  "err_code": "string",
  "err_msg": "string",
  "request_id": "string"
}
```

## Related pages

- [Analyze text content](./text_analyze.md)
- [audio](./tags/audio.md)
- [balances](./tags/balances.md)
- [breakdown](./tags/breakdown.md)
- [configurations](./tags/configurations.md)
- [Create a Project Invite](./invites_create.md)
- [Create a Project Key](./keys_create.md)
- [Create a Project Self-Hosted Distribution Credential](./distributioncredentials_create.md)
- [Create an Agent Configuration](./configurations_create.md)
- [Create an Agent Variable](./variables_create.md)

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