Free TTS API for Developers
Free Text to Speech API
Build voice features fast with a simple REST endpoint. Convert text to natural speech in 75+ languages with 1,200+ voices.
1,200+
Neural voices
75+
Languages
Free
No credit card required
Quick API Example
curl -X POST https://eidosspeech.xyz/api/v1/tts \
-H "X-API-Key: esk_your_key_here" \
-H "Content-Type: application/json" \
-d '{
"text": "Hello from eidosSpeech",
"voice": "en-US-JennyNeural",
"format": "mp3"
}' --output audio.mp3Need more endpoints? See the full API documentation.
Why developers choose this free TTS API
- - Simple REST API and JSON payloads
- - Fast MP3 response suitable for production
- - Web UI and API sharing same voice quality
- - Built-in rate limit headers for predictable usage
- - Ready for subtitle, translate, and batch workflows
Free plan limits
- - 30 requests/day for registered users
- - 1,000 characters per API request
- - 2,000 characters in web app
- - No credit card, no trial expiration
Frequently Asked Questions
Is this really a free text to speech API?
Yes. You can register and start using the free tier without entering payment details.
Can I use this API for YouTube or social content?
Yes, common creator use cases are supported. Please review voice usage terms based on your compliance requirements.
Does it support Indonesian and English?
Yes. Indonesian and English are supported along with many other languages and voice variants.
Long-Tail Guides
Also useful: API tutorial