# OpenMOSS Releases KugelAudio for European Languages

> The new text-to-speech model uses a hybrid diffusion and autoregressive architecture for high-quality, multilingual synthesis.

Published by The Open Weights on Jan 11, 2026. Canonical: https://theopenweights.com/news/kugelaudio-0-open-f3dx

## Key facts

- Company: Kugelaudio
- Model: KugelAudio-0-open
- Version: 0-open
- Category: Text → Speech
- Modalities: Text → Speech
- License: Other (Open weights, commercial use allowed)
- Architecture: KugelAudioForConditionalGeneration
- Precision: BF16
- Weights size: 18.7 GB
- Languages: 23 languages
- Significance: minor
- Published: 2026-01-11
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/kugelaudio/kugelaudio-0-open
- Canonical URL: https://theopenweights.com/news/kugelaudio-0-open-f3dx

OpenMOSS has introduced KugelAudio-0-open, a new text-to-speech (TTS) model designed to generate high-quality audio in several European languages. This release provides a new tool for researchers and developers working on multilingual voice applications.

## A Hybrid Approach to Synthesis

KugelAudio employs a two-stage architecture that combines popular techniques in audio generation. First, a diffusion-based model converts input text into a mel-spectrogram, a visual representation of sound frequencies. This spectrogram is then fed into an autoregressive vocoder, which synthesizes the final audio waveform. The model was trained on an internal dataset of over 20,000 hours of multilingual audio.

The model's explicit focus on European languages addresses a notable gap in the open-source landscape. While many high-performance TTS systems excel at English, generating natural-sounding speech for languages like German, French, or Polish with the same level of quality remains a challenge. KugelAudio aims to provide a strong baseline for these and other languages.

The model is available for download from the [Hugging Face Hub](https://huggingface.co/kugelaudio/kugelaudio-0-open). It is released under the KugelAudio Research License Agreement, which restricts its use to non-commercial research purposes. This makes it a valuable resource for academic exploration rather than for direct integration into commercial products.

## Get the model

- [Hugging Face](https://huggingface.co/kugelaudio/kugelaudio-0-open)

## Sources

- [kugelaudio/kugelaudio-0-open](https://huggingface.co/kugelaudio/kugelaudio-0-open) — Hugging Face, Jan 11, 2026

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "OpenMOSS Releases KugelAudio for European Languages", The Open Weights, Jan 11, 2026, https://theopenweights.com/news/kugelaudio-0-open-f3dx