> ## Documentation Index
> Fetch the complete documentation index at: https://docs.inworld.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Intro to TTS

> Generate natural, expressive speech in real time.

Inworld's text-to-speech (TTS) models offer ultra-realistic, context-aware speech synthesis, zero data retention, and precise voice cloning capabilities, enabling developers to build natural and engaging experiences with human-like speech quality at an accessible price point.

Our models can be accessed via API ([streaming](/api-reference/ttsAPI/texttospeech/synthesize-speech-stream) and [non-streaming](/api-reference/ttsAPI/texttospeech/synthesize-speech)) or the [TTS Playground](http://platform.inworld.ai/tts-playground).

<CardGroup cols={3}>
  <Card title="Developer quickstart" icon="bolt" href="/quickstart-tts">
    Learn how to make your first API call with a guided tutorial.
  </Card>

  <Card title="TTS Playground" icon="play" href="/tts/tts-playground">
    Try different TTS models and voice cloning in TTS Playground.
  </Card>

  <Card title="Code Examples" icon="play" href="https://github.com/inworld-ai/inworld-api-examples/tree/main/tts">
    Browse ready-to-use GitHub samples for common use cases.
  </Card>
</CardGroup>

## Models

<CardGroup cols={2}>
  <Card title="Inworld TTS 1.5 Max" icon="sparkles">
    ### Our flagship model, delivering the best balance of quality and speed

    * Rich, expressive, contextually aware speech
    * Support for 15 languages
    * Optimized for real-time use (\<200ms median latency)
    * High quality instant voice cloning
  </Card>

  <Card title="Inworld TTS 1.5 Mini" subtitle="Our ultra-fast model" icon="bolt">
    ### Our ultra-fast, most cost-efficient model. For when latency is the top priority.

    * Ultra-low latency (\~120ms median latency)
    * Support for 15 languages
    * Radically affordable pricing
    * High quality instant voice cloning
  </Card>
</CardGroup>

## Features

| **Feature**                                                                                         | **TTS-1.5-Max**                   | **TTS-1.5-Mini**                |
| :-------------------------------------------------------------------------------------------------- | :-------------------------------- | :------------------------------ |
| Radically accessible pricing                                                                        | \$10/1M characters                | \$5/1M characters               |
| Quality                                                                                             | #1 ranked, maximum stability      | #1 ranked                       |
| P50 Latency                                                                                         | 200 ms                            | 120 ms                          |
| [Free instant voice cloning](/tts/voice-cloning)                                                    | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| Professional voice cloning                                                                          | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| [Custom pronunciation](/tts/capabilities/custom-pronunciation)                                      | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| [Multilingual](/tts/capabilities/generating-audio#language-support)                                 | 15 languages                      | 15 languages                    |
| [Audio markups](/tts/capabilities/audio-markups) for emotion, style and non-verbals                 | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| [Timestamp alignment](/tts/capabilities/timestamps)                                                 | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| [On-premises deployments](/tts/on-premises)                                                         | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |
| [Zero data retention](/tts/resources/zero-data-retention)                                           | <Icon icon="check" size={18} />   | <Icon icon="check" size={18} /> |


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