A Guide to Voice Cloning on Voxtral with a Missing Encoder

Mistral's new Voxtral-4B-TTS is a powerful text-to-speech model that uses a large language model backbone to generate incredibly realistic audio. While it was promoted for its voice cloning abilities, the public release is missing the crucial audio encoder, preventing users from cloning any new voices. The model works by breaking audio down into "semantic" tokens for meaning and "acoustic" tokens for the voice's unique sound. This guide explores a fascinating workaround to reverse-engineer these audio codes from a sound sample, aiming to unlock the model's full voice cloning potential despite the missing component.