Update: New voices and testing capabilities in the AI Assistant Builder

15, Apr 2025

Your AI assistant’s voice sets the tone for every interaction, and now you have more control than ever before. With full access to our voice library, support for custom ElevenLabs voices, and a built-in voice playground, it’s easier to design conversations and deploy agents that sound exactly the way you want.

What’s new:

We’ve upgraded the voice configuration experience in the AI Assistant Builder so you can test, compare, and deploy high-quality voices faster. Additional voices and customizable options are now easily accessible, making it simpler to explore and assign the right sound to your agent.

  • Expanded voice access: Use any Telnyx-supported voice, including the full Kokoro language library and dialects.
  • Custom ElevenLabs voice support: Bring your own ElevenLabs voice for a fully tailored experience.
  • Voice playground: Preview and test multiple voices inside the interface to find the right tone, language, and delivery.

Why it matters

Voice is the first impression your AI assistant makes. Whether you’re serving a global audience or aiming for a specific brand tone, the right voice makes interactions feel more natural and trustworthy. These updates give you full control to fine-tune your assistant’s sound with zero limitations.

Getting started

Follow these steps to leverage conversation history and insights in your AI assistant:

  1. Access the AI Assistant Builder: Log in to your Telnyx Mission Control Portal account and navigate to the AI Assistant section.
  2. Define your assistant: Provide instructions and a greeting to guide your assistant’s responses.
  3. Select your model and tools: Choose the appropriate AI model and enable pre-configured tools for specific tasks.
  4. Configure voice and transcription: Customize your assistant’s voice and speech settings. Test available voices in the integrated playground and choose the one that fits your brand.
  5. Add insights: Define the data you want to extract from conversations—summeries, sentiment, action items, and more.
  6. Assign a phone number: Connect your assistant to a number so it’s primed for real-time interaction.
  7. Test and deploy: Use the built-in testing environment to validate performance before launching.
  8. Analyze conversation history: Review transcripts, debug interactions, and explore configured insights all in one place.

Get started today to make your AI Assistants even more effective.