Choose from leading voice engines and models
Every TTS engine has trade-offs
ElevenLabs locks you into one provider
ElevenLabs delivers exceptional voice quality but you're locked to their models with no engine flexibility. Built for content creation, not real-time Voice AI. No telephony integration means your synthesis and delivery run on separate infrastructure, adding network latency to conversational applications.
Vapi orchestrates, doesn't host
Vapi offers provider choice through orchestration but requires external API calls to TTS providers. Every synthesis request traverses the internet to reach external TTS services. You're dependent on multiple vendors' uptime with no control over the infrastructure chain.
Retell routes to external APIs
Retell provides TTS provider flexibility through external API routing but adds network latency to every synthesis call. Your voice synthesis happens outside their platform on third-party infrastructure. Multiple vendor dependencies create potential points of failure in your voice pipeline.
THE SOLUTION
Why TTS Router works differently
TTS Router eliminates the trade-offs that force you to choose between voice quality, latency, cost, and engine flexibility. Our platform gives you access to every major TTS engine through unified infrastructure designed specifically for Voice AI applications.
Switch between TTS engines via configuration, not code rewrites. Access Telnyx Ultra, Qwen3TTS, xAI, Rime, MiniMax Speech 2.8 Turbo, ResembleAI, Inworld, Azure, and AWS through one API. Future-proof your voice stack as better engines emerge.
TTS runs on Telnyx edge infrastructure in the same facilities where your calls terminate. No internet round-trips to external APIs. Audio synthesized where it's delivered.
Choose from 1,300+ voices across over 100 languages and variants. Deliver localized experiences that resonate with customers worldwide, improving engagement and reducing language barriers in Voice AI interactions.
Eliminate latency by processing voice synthesis at the point of delivery. Your latency equals processing time, not network time. No dependency on external provider uptime.
See TTS Router in action
Most voice AI builds start with a vendor problem: one for TTS, one for STT, one for telephony, and one for inference. This demo shows how Telnyx collapses that stack into a single platform, with flexible APIs for both speech-to-text and text-to-speech, 100+ language support, and a no-code UI to get started in minutes
Try leading voice engines through one API
Preview voices from leading engines delivered through edge-hosted infrastructure. Switch between engines instantly without code changes or vendor lock-in
CHOOSE AGENT
ENTER YOUR OWN TEXT
Power assistants, apps, and automations with TTS
Use text to speech to give chatbots and AI agents a natural voice that responds instantly to users.
Use real-time text-to-speech to read on-screen content, notifications, and messages aloud for people who can’t easily read them.
Use text-to-speech to speak prompts and instructions on kiosks in retail stores, airports, and airline check-in so customers can follow each step without confusion.
Use text-to-speech to generate guided sessions, affirmations, or long-form audio from text instead of recording voiceovers.
Use text-to-speech to power AI agents that handle customer inquiries, resolve issues, and route calls so support teams can scale without adding headcount.
Use text-to-speech to vocalize translations in different languages so people can hear information in their preferred language and accent.
RESOURCES
Start building
Power your product with text-to-speech im minutes.
A guide to Telnyx TTS options
Not all voices are created equal, and neither are the trade-offs. This guide breaks down every TTS engine available through the Telnyx API, so you can match the right voice to every use case without juggling multiple integrations.
Text-to-speech dev docs
This guide walks through how to integrate Telnyx's full TTS stack into your Voice API or TeXML application. Each engine is ready to drop in with a single voice parameter, so you can swap providers or mix and match across use cases without touching your core infrastructure.
TTS Liibrary
The Telnyx TTS Library lets you audition voices across Telnyx Ultra, Qwen3TTS, xAI, NaturalHD, ElevenLabs, MiniMax Speech 2.8 Turbo, Rime, Azure, AWS, Inworld, ResembleAI, and more before writing code, so you can find the voice that fits your brand, use case, and audience before you build around it.