🎙️ Live demo: Try this model in the ResembleAI/Chatterbox-Multilingual-TTS-pt-br Space.

Chatterbox Multilingual: Brazilian Portuguese

Chatterbox Multilingual: Brazilian Portuguese is a dedicated single-language finetune in the Chatterbox Multilingual V3 Single Language Pack. It is optimized for Portuguese as spoken in Brazil, with language- and region-specific behavior for expressive text-to-speech and voice cloning.

Use this model when you want tighter Brazilian Portuguese quality control than the broad multilingual checkpoint. For a single model that covers all supported languages, use ResembleAI/chatterbox.

Demo

Try the hosted demo Space: ResembleAI/Chatterbox-Multilingual-TTS-pt-br.

Files

• t3_pt_br.safetensors: T3 state dict in safetensors format.
• s3gen_v3.pt / s3gen_v3.safetensors: V3 S3Gen speech decoder checkpoint.
• grapheme_mtl_merged_expanded_v1.json: multilingual tokenizer config.

Language

• Locale: pt-BR
• Chatterbox language ID: pt

Checkpoint Metadata

• Source step: 137400
• Source checkpoint: t3_137400.pth.tar
• Tensor count: 292
• Dtype: float32
• Text embedding shape: (2454, 1024)
• Speech embedding shape: (8194, 1024)
• Size: 2143990296 bytes
• SHA256: 074aaf65255eb9cb960288f7cc72e09d3b5008f6e0b14868c0d4e5b0bd7cbb6c

Loader Notes

This repository contains Chatterbox Multilingual V3 single-language assets used by the linked demo Space. The T3 checkpoint is loaded with multilingual vocabulary shape 2454 and S3 speech vocabulary shape 8194.

The demo combines these model-specific assets with the shared Chatterbox inference code and companion assets needed for end-to-end speech generation.