Chatterbox TTS Multilingual Overview

Description:

Chatterbox Multilingual is a 500M-parameter, end-to-end multilingual text-to-speech (TTS) model from Resemble AI. It generates expressive, natural speech across 23 languages and supports zero-shot voice cloning from as little as 5 seconds of reference audio. The model uses a T3 (Text-to-Speech Token Generator) architecture paired with an S3Gen diffusion-based decoder with flow matching, enabling high-fidelity audio generation and robust cross-lingual synthesis.

The container components are ready for commercial/non-commercial use.

License/Terms of Use:

Governing Terms: The NIM container is governed by the NVIDIA Software License Agreement. You are responsible for ensuring that your use of NVIDIA provided models complies with all applicable laws.

Deployment Geography: Global

Release Date: June-3, 2026

Build.Nvidia.com 05/25/2026 via https://build.nvidia.com/resembleai/chatterbox-multilingual-tts NGC 05/25/2026 via https://catalog.ngc.nvidia.com/orgs/nim/teams/nvidia/containers/chatterbox-tts-multilingual?version=1.0

Deployment Details:

For details on how to deploy the model, please refer to the deployment tutorial.

Our AI models are designed and/or optimized to run on NVIDIA GPU-accelerated systems. By leveraging NVIDIA’s hardware (e.g. GPU cores) and software frameworks (e.g., CUDA libraries), the model achieves faster training and inference times compared to CPU-only solutions.

Container Version(s):

1.0.0

Security Common Vulnerabilities and Exposures (CVEs)

Please review the Security Scanning tab on NGC to view the latest security scan results. For certain open-source vulnerabilities listed in the scan results, NVIDIA provides a response in the form of a Vulnerability Exploitability eXchange (VEX) document. The VEX information can be reviewed and downloaded from the Security Scanning tab.

Ethical Considerations:

NVIDIA believes Trustworthy AI is a shared responsibility and we have established policies and practices to enable development for a wide array of AI applications. When downloaded or used in accordance with our terms of service, developers should work with their internal developer team to ensure these software components meet requirements for the relevant industry and use case and address unforeseen product misuse.

Please report quality, risk, security vulnerabilities or NVIDIA AI Concerns here.

Get Help

Getting started with the NIM

Deploying and integrating the NIM is straightforward thanks to our industry standard APIs. Visit the NIM Container page for release documentation, deployment guides and more https://docs.nvidia.com/nim/speech/latest/index.html.

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