# MOSS-TTS-Nano Delivers Multilingual Speech at 100M Params

> The new open-source model from OpenMOSS-Team generates high-quality speech in multiple languages while maintaining a remarkably small footprint.

Published by The Open Weights on Apr 2, 2026. Canonical: https://theopenweights.com/news/moss-tts-nano-100m-63iz

## Key facts

- Company: OpenMOSS
- Model: MOSS-TTS-Nano-100M
- Version: 1.0
- Category: Text → Speech
- Modalities: Text → Speech
- License: Other (Open weights, commercial use allowed)
- Parameters: 100M
- Architecture: MossTTSNanoForCausalLM
- Languages: 20 languages
- Significance: minor
- Published: 2026-04-02
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/OpenMOSS-Team/MOSS-TTS-Nano-100M
- Canonical URL: https://theopenweights.com/news/moss-tts-nano-100m-63iz

The field of open-source text-to-speech has a new, compact contender. A group known as OpenMOSS-Team has released MOSS-TTS-Nano, a generative audio model with just 100 million parameters designed for high-quality, multilingual speech synthesis.

The model's key feature is its linguistic flexibility. It officially supports English, Mandarin Chinese, and Cantonese, but its most notable capability is handling mixed-language sentences—a common challenge for speech models. This allows it to generate natural-sounding audio from text that switches between languages, such as "give me a cup of 拿铁."

At just 100M parameters, the 'Nano' in its name is well-earned. This small size makes MOSS-TTS-Nano a compelling option for applications where computational resources are limited, such as on-device assistants, embedded systems, or other edge computing scenarios. It presents an efficient alternative to larger, cloud-dependent text-to-speech APIs.

The model is available for download from the team's [Hugging Face repository](https://huggingface.co/OpenMOSS-Team/MOSS-TTS-Nano-100M). It's released under a Creative Commons CC BY-NC-SA 4.0 license, which permits academic and personal use but restricts commercial applications.

## Get the model

- [Hugging Face](https://huggingface.co/OpenMOSS-Team/MOSS-TTS-Nano-100M)

## Sources

- [OpenMOSS-Team/MOSS-TTS-Nano-100M](https://huggingface.co/OpenMOSS-Team/MOSS-TTS-Nano-100M) — Hugging Face, Apr 2, 2026

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "MOSS-TTS-Nano Delivers Multilingual Speech at 100M Params", The Open Weights, Apr 2, 2026, https://theopenweights.com/news/moss-tts-nano-100m-63iz