Generate speech from text using the specified voice model. Supports emotion, volume, pitch, and tempo customization.

First, list all available voice models using the GET /v1/voices endpoint,  then use the voice_id from the response to generate speech with this endpoint. Each voice model has its own unique characteristics. See [Listing all voices](/docs/api-reference/endpoint/voices/voice) for available voices.

Text to Speech

Output audio format: wav (uncompressed, higher quality, larger file size, better for professional use) or mp3 (compressed, smaller file size, better for web streaming)

Audio Format

Adjusts the pitch in semitones to affect perceived gender and age: -12 (one octave lower, deeper voice), -6 (half octave lower), 0 (original pitch, default), +6 (half octave higher), +12 (one octave higher, higher voice)

Audio Pitch

Controls speech speed: 0.5 (half speed, very slow and clear), 0.75 (slightly slower than normal), 1.0 (normal speaking speed, default), 1.5 (50% faster than normal), 2.0 (double speed, very fast speech)

Audio Tempo

Controls the volume level of the output audio: 0 (completely silent), 50 (half volume), 100 (standard volume, default), 150 (50% louder than standard), 200 (maximum volume, twice as loud as standard)

Volume

Output

Controls how strongly the emotion is expressed: 0.0 (neutral, emotionless), 0.5 (subtle emotional expression), 1.0 (standard emotional expression, default), 1.5 (strong emotional expression), 2.0 (very strong, exaggerated emotional expression)

Emotion Intensity

Emotion preset for speech generation: happy (bright, cheerful tone with higher pitch and faster tempo), sad (melancholic, slower tone with lower pitch), angry (strong, intense tone with higher volume and faster tempo), or normal (neutral, balanced tone)

Emotion Preset

Prompt

TTSModel

TTSRequest

ApiKeyAuth

Validation Error - Request validation failed

Internal Server Error - Server processing failed

Text To Speech

Typecast Documentation

Typecast is a text-to-speech API that allows you to convert text into lifelike speech.

Overview

Get started with Typecast and create your first AI voice.

Quickstart

Models

Voices

Learn how to maximize the potential of Typecast SSFM through various prompting techniques and discover advanced prompting strategies to enhance your text-to-speech outputs.

Prompting

Learn how to integrate Typecast SSFM with AWS Marketplace, a fully managed service that provides access to foundation models via API.

AWS Marketplace

Lists all available voice models for text-to-speech conversion.

This endpoint returns a complete list of voices including each voice's ID, name, supported model type (ssfm-v21), and available emotion options (happy, sad, angry, normal, etc.).

Returned voices have unique identifiers starting with either 'tc_' prefix (Typecast voices) or 'uc_' prefix (User-created voices).

Optional query parameters can be used to filter results by specific model type.

Text to Speech

Voices

Text to Speech

Authorizations

Body

Response