Minimax support added to Voice Design Lab for voice design and cloning

19, Mar 2026

Voice Design Lab now supports the Minimax provider for both prompt-based voice design and audio cloning. This expands control over voice quality by allowing longer reference audio and more detailed voice capture.

What’s new

Minimax provider support: Available for voice design and cloning workflows.
Long-form audio input: Supports 10 seconds to 5 minutes for cloning.
Provider toggle: Switch between Telnyx and Minimax in the UI or API.
API parameter update: Set "provider": "minimax" in design and clone requests.
Cross-platform usage: Use Minimax voices in TTS API, Call Control, and AI Assistants.

Why it matters

Improves voice fidelity for cloning with longer, more expressive audio samples.
Reduces iteration cycles when capturing tone, pacing, and speaking style.

Simplifies provider selection with a single workflow across UI and API.

Enables broader voice coverage for use cases that need longer recordings.

Example use cases

Clone a support agent voice from a recorded call for consistent IVR playback.
Design branded voices with more nuanced tone using longer reference material.
Build multilingual assistants with provider-specific voice characteristics.

Getting started

Open Voice Design Lab in the Mission Control Portal.
Select Minimax using the provider toggle.
Choose Design a voice or Upload Audio.
For API usage, set "provider": "minimax" in /v2/voice_designs or /v2/voice_clones.
Retrieve the voice ID and use it in TTS, Call Control, or AI Assistant configs.

Deploy Everywhere

Your custom voice works across the full Telnyx stack:

• AI Assistants — give your agent a consistent brand voice • Call Control speak — custom TTS in programmatic call flows • TTS API — integrate into any application via WebSocket or REST

Full API Access

Everything in the portal is also available programmatically:

• /voicedesigns — create and iterate on voice designs • /voiceclones — clone from audio or save a design as a usable voice

Try it out today

You can head to the Mission Control Portal and head to the Voice Design Lab to test or take a look at our developer documentation to design at scale.