Azure Neural HD voices now live in Telnyx Programmable Voice

We’ve added Azure Neural HD voices to our text‑to‑speech lineup. With this update, you can pick from a wider range of crisp, expressive voices, all accessible through the same Telnyx Programmable Voice API.

Key benefits:

Human‑like speech generation: Trained on millions of multilingual utterances, Azure Neural HD voices produce natural pacing, rhythm, and emotion

Conversational realism: Automatically reproduces spontaneous pauses, emphasis, and filler words so interactions sound like live dialogue.

Dynamic variation: Introduces subtle variations in every delivery to avoid robotic repetition and keep listeners engaged. More choice, less lock‑in: Toggle between Telnyx voices and Microsoft Azure Neural HD voices with a single request parameter. No new contracts or infrastructure changes.

Bring your own carrier (BYOC): Continue routing calls over the carrier of your choice using the existing API key. Your voice, your network.

Transparent, pay‑as‑you‑go pricing: TTS Azure HD: $0.000045 per character, so you only pay for what you use.

Why it matters

Voice quality directly shapes caller behavior. Natural‑sounding speech cuts hang‑ups and increases survey completion rates. Azure HD gives you that extra clarity for premium real-time voice interactions, while other options keep routine traffic within budget. You can choose voices that fit best with the intent.

Getting started

Follow these steps to start using Azure HD voices.

1. Before starting, please make sure your Voice API or TeXML application is correctly configured.
2. Pick a voice ID in the format in the format Azure.- for example Azure.en-US-Emma:DragonHDLatestNeural
3. Add your configurations using the TTS guide.
4. Assign a number to your application, then call the number to verify your TTS setup.
5. Swap voices or tiers whenever you need. No infrastructure changes or new carrier setups.

For more details visit our developer documentation and start building today .