Text to Speech API: Ultra-realistic and low latency
speech generation
Build with high-quality, controllable speech generation for real-time and bulk applications. Models optimized for latency, fidelity, and long-form consistency.
Powered by 60dB Kaak
One model, two ways to call it: stream audio for live agents, or request a finished file for narration and content.
Streaming
60dB Kaak over WebSocket, for real-time agents
- ✓~197 ms median time to first audio
- ✓30 languages, native Hindi–English code-switching
- ✓Audio streamed as it is generated
- ✓$0.02 per 1K characters
Batch
60dB Kaak over REST, for finished audio files
- ✓One request, one complete audio file
- ✓30 languages
- ✓Sample rates from 8 kHz to 48 kHz
- ✓$0.02 per 1K characters
Everything you need to build production-ready speech
Generate expressive, controllable speech with models built for real-time, long-form, and production use.
Control emotion and delivery
Add inline tags like [calm], [apologetic] or [happy] for 19 emotions, plus sounds such as [laugh] and [pause 500ms]. Or let Enhance place the tags in your text without changing a word.
Access 500+ voices
Explore an ever-growing collection of expressive, lifelike voices for any use case.
Voice design & cloning
Create in 30 languages with natural voices, expressive accents, and localized audio tailored to your audience.
Multi-speaker dialogue
Create natural multi-speaker conversations across 30 languages with expressive, controllable voices.
Audio events and direction
Control delivery with audio tags, timing cues, and narrative direction built into the speech.
Pronunciation dictionaries
Define custom pronunciations to ensure consistent, accurate speech for names and terminology.
APIs built for production
Trusted by enterprise customers worldwide for mission-critical applications.
Enterprise-level data protection
Data is encrypted in transit and at rest, with support for SOC 2, HIPAA, and GDPR compliance. EU Data Residency and Zero Retention modes are available for stricter data control.
Python and TypeScript SDKs
Official SDKs for seamless integration with your existing tech stack.
Elevated support and custom deployments
Dedicated support team and custom deployment options for enterprise customers.
Powering world's leading companies and brands
Trusted by companies building at scale
Meta
"From dubbing Reels in local languages, to generating music and character voices in Horizon, 60db platform enables global creators, businesses, and enterprises to build with voice, music, and sound at scale."
Chess.com
"Millions of people learn chess from creators like Hikaru, Levy, and Magnus every day. With 60db, we've taken a big step toward creating immersive, personal learning experiences."
Twilio
"We've integrated 60db's generative AI voice technology into our CPaaS, enhancing conversational interactions with the most expressive, human-sounding voices available."
Frequently asked questions
Find answers to common questions about our API
Latest updates
Tutorials, model releases, and engineering notes from the 60db TTS API team.