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

# Introduction

> High-quality voice data with 10,000+ diverse speakers

# Welcome to Destined Voice API

Destined Voice helps companies to evaluate voice models and agents with globally representative voices and custom AI models.

## Why Destined Voice?

<CardGroup cols={2}>
  <Card title="10,000+ Real Voices" icon="users">
    Diverse demographics including gender, age, region, and accent. All voices are from consented speakers.
  </Card>

  <Card title="Voice Generation" icon="microphone">
    Generate new custom voices for your evals.
  </Card>

  <Card title="Voice Agent Evals" icon="chart-line">
    Evaluate speech-to-text providers with WER/CER metrics and demographic bias analysis.
  </Card>

  <Card title="Batch Processing" icon="layer-group">
    Generate audio for multiple speakers asynchronously with job tracking.
  </Card>
</CardGroup>

## Quick Example

```typescript theme={null}
import { SDK } from "@destined-ai/voice";

const client = new SDK({
  bearerToken: process.env.DESTINED_API_KEY,
});

// Generate speech
const audio = await client.ttsGeneration.synthesizeSpeechV1TtsSynthesizePost({
  speakerId: "speaker-uuid",
  text: "Hello, welcome to Destined Voice!",
});

console.log(audio.audioUrl);
```

## Features

| Feature            | Description                                                                            |
| ------------------ | -------------------------------------------------------------------------------------- |
| **TTS Synthesis**  | Convert text to natural speech using any speaker voice                                 |
| **Speaker Browse** | Filter speakers by gender, age, region, accent                                         |
| **Batch Jobs**     | Process multiple synthesis requests asynchronously                                     |
| **STT Evaluation** | Evaluate providers such as Deepgram, AssemblyAI, OpenAI, Google, Azure, Amazon, Soniox |
| **Dataset Import** | Upload CSV files for bulk TTS generation                                               |
| **Usage Tracking** | Monitor character usage and API calls                                                  |

## Next Steps

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get up and running in 5 minutes
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Explore all available endpoints
  </Card>
</CardGroup>