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Aero TTS

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Why Aero TTS?

• Ultra-low latency — ~60-120ms time-to-first-byte depending on model
• 90+ voices — Male and female voices across 20+ languages
• 3 model tiers — From premium high-quality to lightweight cost-effective models
• Voice mixing — Blend multiple voices to create unique custom voices
• Streaming — Start playback before synthesis completes
• Simple API — One endpoint, one API key, any programming language
• Pay-as-you-go — Billed per character with generous free tier

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Models

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Choosing a Model

• Voice agents / phone calls — Use aero for the most natural, lowest-latency output
• High-volume batch jobs — Use aero-mini for cost-effective processing
• Lightweight usage — Use aero-nano for minimal resource usage

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Supported Languages

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Quick Start

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1. Get an API Key

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2. Synthesize Speech

curl -X POST https://api.thinnest.ai/api/tts/synthesize \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Hello! Welcome to Aero TTS.",
    "voice": "aero-vayu",
    "model": "aero",
    "format": "mp3"
  }' \
  --output speech.mp3

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3. Play the Audio

# macOS
afplay speech.mp3

# Linux
aplay speech.mp3

# Windows
start speech.mp3

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Audio Formats

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Dashboard

• Playground — Type text and hear it spoken instantly. Compare voices and models side by side.
• Voices — Browse all 90+ voices, filter by language and gender, preview samples.
• Voice Lab — Create custom hybrid voices by blending 2-4 voices together.
• API Keys — Create, manage, and revoke API keys with per-key rate limits.
• Usage — Track character usage, request counts, latency metrics, and costs.

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Next Steps

• Voices — Browse all available voices by language and gender
• API Reference — Full REST API documentation with examples
• Voice Lab — Create custom hybrid voices
• Pricing — Understand pricing tiers and free allowances
• SDKs & Integration — Python, JavaScript, and cURL examples