# Qwen's Fun-Audio-Chat: An Open Speech-to-Speech LLM

> The 8-billion-parameter model from Alibaba's Qwen team understands and generates spoken responses, enabling more natural audio-first applications.

Published by The Open Weights on Dec 23, 2025. Canonical: https://theopenweights.com/news/fun-audio-8b-j2op

## Key facts

- Company: Qwen · Alibaba
- Model: Fun-Audio-Chat-8B
- Version: 8B
- Category: Any-to-Any
- Modalities: Any-to-Any, Text → Speech, Speech → Text
- License: Apache 2.0 (Open weights, commercial use allowed)
- Parameters: 8B
- Context window: 262K tokens
- Architecture: FunAudioChatForConditionalGeneration
- Precision: BF16
- Weights size: 18.9 GB
- Significance: notable
- Published: 2025-12-23
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/FunAudioLLM/Fun-Audio-Chat-8B
- Canonical URL: https://theopenweights.com/news/fun-audio-8b-j2op

Alibaba's Qwen team has released Fun-Audio-Chat-8B, an 8-billion-parameter model designed for seamless speech-to-speech conversation. Released under the permissive Apache 2.0 license, the model can process spoken input and generate a spoken response, creating a more natural conversational flow than traditional text-based interfaces.

The system functions as a comprehensive audio pipeline, integrating a speech encoder, the Qwen-7B-Chat language model for reasoning, and a text-to-speech (TTS) component to vocalize the final answer. This architecture allows it to handle complex interactions entirely through audio, supporting both English and Chinese languages.

While many multimodal models can accept audio as an input, few open-source projects close the loop with integrated, high-quality speech synthesis for true conversational interaction. Fun-Audio-Chat provides a powerful, unified foundation for developers building more intuitive voice assistants, accessibility tools, and real-time interactive agents.

The model and its components are [available now on Hugging Face](https://huggingface.co/FunAudioLLM/Fun-Audio-Chat-8B) for researchers and developers to explore. Its open license permits a wide range of academic and commercial applications, encouraging further innovation in audio-native AI.

## Get the model

- [Hugging Face](https://huggingface.co/FunAudioLLM/Fun-Audio-Chat-8B)

## Sources

- [FunAudioLLM/Fun-Audio-Chat-8B](https://huggingface.co/FunAudioLLM/Fun-Audio-Chat-8B) — Hugging Face, Dec 23, 2025

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "Qwen's Fun-Audio-Chat: An Open Speech-to-Speech LLM", The Open Weights, Dec 23, 2025, https://theopenweights.com/news/fun-audio-8b-j2op