Basics

Getting Started with slng.ai

This guide will walk you through your first voice API call using slng.ai. Whether you're building a voicebot, adding accessibility features, or running audio workflows at scale, we make it simple to get started.

---

🧾 1. Get Your API Key

Sign up at slng.ai and retrieve your API key from the dashboard.

🔐 Keep your API key secret. It authenticates your account and usage.

---

🧪 2. Make Your First API Call

You can test the API right away using curl, Postman, or any HTTP client.

Here's a simple example using the VUI model for text-to-speech:

Code(bash)
 
curl -X POST https://api.slng.ai/tts/vui \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Hello world, from slng dot ai"
  }'

This will return an audio file (.mp3 or .wav) as a binary stream or base64, depending on your configuration.

---

🧠 3. Or Let slng.ai Pick the Best Model

Instead of choosing a model yourself, just call the base endpoint:

Code(bash)
 
curl -X POST https://api.slng.ai/tts \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Auto-routed voice response",
    "language": "en-US",
    "region": "eu-west"
  }'

We'll smart-route the request to the most suitable model based on:

• Your language and region
• Quality preferences
• Pricing limits
• Voice cloning options
• Account preferences

---

🎚️ 4. Adjust Request Parameters

You can customize output via optional parameters:

Code(json)
 
{
  "text": "My custom voice example",
  "language": "en-GB",
  "region": "eu-west",
  "clone": true,
  "pricing_limit": 0.01,
  "quality_minimum": 0.85
}

---

⚙️ 5. Try Speech-to-Text (STT)

To convert audio into text, send a request like this:

Code(bash)
 
curl -X POST https://api.slng.ai/stt/whisper-v3 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: multipart/form-data" \
  -F "[email protected]"

Or use the smart-routed /stt endpoint with optional parameters.

---

🔁 6. What’s Next?

• Which Model Should I Use?
• Smart Routing
• Regional Routing
• Setting Preferences
• Account Usage & Billing

---

📞 Help & Support

Need help? We're here:

• Email: [email protected]
• Discord: #slng-ai-dev
• Slack (invite only)

---

Let your app speak, transcribe, and listen — with just a few lines of code.

Last updated: June 2025