# Developers

## Quick Start

Make your first Text-to-Speech API request. Replace `YOUR_API_KEY` with your API key from the API Keys tab.

```
curl -X POST https://api.fish.audio/v1/tts \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "model: s1" \
  -d '{"text": "Hello! Welcome to Fish Audio."}' \
  --output welcome.mp3
```

## Usage

### Cost

Log in to view usage

### Concurrency & Pricing

Concurrency

5

Raise your concurrency

Need more throughput?

Top up $100+ to unlock 15 concurrent requests, or top up $1000+ to unlock 50. For larger production traffic, contact sales for custom concurrency and volume pricing.

Top up $100+ -> 15 concurrent requests

Top up $1000+ -> 50 concurrent requests

Need more? Contact sales

| Model Type | Model Name | Pricing |
| --- | --- | --- |
| TTS | S1 | $15.00/ million UTF-8 bytes |

## Unlock the Full Potential

Free voice generation

High-quality audio in seconds

Countless character sounds

Latest AI model