Overview
The Audio API provides voice cloning and text-to-speech capabilities. Clone voices from audio samples and generate natural-sounding speech in 30+ languages. Perfect for voiceovers, audiobooks, virtual assistants, and character dialogue.Base URL
Core Endpoints
Voice Clone Object
Audio Generation Object
Pricing
Voice Cloning
- Cost: 5 credits per voice clone (one-time)
- Reusable: Generate unlimited audio with same voice ID
Audio Generation
- Base: 5 credits
- Duration: +1 credit per second
- Formula:
Total = 5 + (duration_seconds × 1)
Examples
Quick Start
Clone a Voice
Generate Speech
Supported Languages
- English
- European
- Asian
- Other
en-US- American Englishen-GB- British Englishen-AU- Australian Englishen-CA- Canadian Englishen-IN- Indian English
Preset Voices
Use built-in voices without cloning:Voice Modulation
Control speech characteristics:Audio Quality Options
Output Formats
Sample Rates
- 22050 Hz: Voice-only, minimal quality
- 44100 Hz: CD quality, recommended for most uses
- 48000 Hz: Professional audio, broadcast quality
SSML Support
Use Speech Synthesis Markup Language for fine control:Error Responses
invalid_audio_sample- Poor quality or too shortunsupported_language- Language not availabletext_too_long- Exceeds maximum length (10,000 chars)voice_not_found- Voice ID doesn’t existinsufficient_credits- Not enough credits
Rate Limits
Best Practices
Recording Quality
Recording Quality
For best voice cloning results:
- Use clean, noise-free environment
- 15-60 seconds of clear speech
- Professional microphone recommended
- Sample rate: 44.1kHz or higher
- Format: WAV, MP3, or FLAC
Text Optimization
Text Optimization
- Keep sentences natural and conversational
- Use punctuation for proper pauses
- Break long text into smaller chunks
- Specify pronunciation for technical terms
- Test with short samples first
Content Policy
Content Policy
- Only clone voices you have permission to use
- Don’t impersonate without consent
- Clearly disclose AI-generated content
- Comply with local voice biometric laws
Webhooks
Subscribe to audio completion events:Next Steps
Clone Voice
Create voice profiles
Generate Speech
Text-to-speech
Add to Video
Sync with video