> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/QwenLM/Qwen3-TTS/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Powerful speech generation with voice clone, voice design, and natural language control

## What is Qwen3-TTS?

Qwen3-TTS is a series of powerful speech generation models developed by Qwen, offering comprehensive support for voice clone, voice design, ultra-high-quality human-like speech generation, and natural language-based voice control. It provides developers and users with the most extensive set of speech generation features available.

The models cover **10 major languages** (Chinese, English, Japanese, Korean, German, French, Russian, Portuguese, Spanish, and Italian) as well as multiple dialectal voice profiles to meet global application needs.

## Key Features

<CardGroup cols={2}>
  <Card title="Powerful Speech Representation" icon="waveform-lines">
    Powered by the self-developed Qwen3-TTS-Tokenizer-12Hz, it achieves efficient acoustic compression and high-dimensional semantic modeling of speech signals. It fully preserves paralinguistic information and acoustic environmental features, enabling high-speed, high-fidelity speech reconstruction through a lightweight non-DiT architecture.
  </Card>

  <Card title="Universal End-to-End Architecture" icon="diagram-project">
    Utilizing a discrete multi-codebook LM architecture, it realizes full-information end-to-end speech modeling. This completely bypasses the information bottlenecks and cascading errors inherent in traditional LM+DiT schemes, significantly enhancing the model's versatility, generation efficiency, and performance ceiling.
  </Card>

  <Card title="Extreme Low-Latency Streaming" icon="bolt">
    Based on the innovative Dual-Track hybrid streaming generation architecture, a single model supports both streaming and non-streaming generation. It can output the first audio packet immediately after a single character is input, with end-to-end synthesis latency as low as **97ms**, meeting the rigorous demands of real-time interactive scenarios.
  </Card>

  <Card title="Intelligent Voice Control" icon="microphone-lines">
    Supports speech generation driven by natural language instructions, allowing for flexible control over multi-dimensional acoustic attributes such as timbre, emotion, and prosody. By deeply integrating text semantic understanding, the model adaptively adjusts tone, rhythm, and emotional expression, achieving lifelike "what you imagine is what you hear" output.
  </Card>
</CardGroup>

## Model Architecture

Qwen3-TTS employs a discrete multi-codebook language model architecture for end-to-end speech generation:

<Frame>
  <img src="https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen3-TTS-Repo/overview.png" alt="Qwen3-TTS Architecture" />
</Frame>

The architecture consists of:

* **Qwen3-TTS-Tokenizer-12Hz**: Encodes speech into discrete codes and decodes them back
* **Language Model**: Generates speech codes conditioned on text and optional prompts
* **Dual-Track Generation**: Supports both streaming and non-streaming modes

## Released Models

Below is an overview of the Qwen3-TTS models currently available:

### Tokenizer

| Model Name                   | Description                                                                                |
| ---------------------------- | ------------------------------------------------------------------------------------------ |
| **Qwen3-TTS-Tokenizer-12Hz** | The tokenizer model that encodes input speech into codes and decodes them back into speech |

### TTS Models

| Model                               | Size | Features                                                   | Languages    | Streaming | Instruction Control |
| ----------------------------------- | ---- | ---------------------------------------------------------- | ------------ | --------- | ------------------- |
| **Qwen3-TTS-12Hz-1.7B-VoiceDesign** | 1.7B | Voice design based on user-provided descriptions           | 10 languages | ✅         | ✅                   |
| **Qwen3-TTS-12Hz-1.7B-CustomVoice** | 1.7B | Style control over 9 premium timbres via user instructions | 10 languages | ✅         | ✅                   |
| **Qwen3-TTS-12Hz-1.7B-Base**        | 1.7B | 3-second rapid voice clone; can be fine-tuned              | 10 languages | ✅         | —                   |
| **Qwen3-TTS-12Hz-0.6B-CustomVoice** | 0.6B | Supports 9 premium timbres                                 | 10 languages | ✅         | —                   |
| **Qwen3-TTS-12Hz-0.6B-Base**        | 0.6B | 3-second rapid voice clone; can be fine-tuned              | 10 languages | ✅         | —                   |

<Note>
  All models support **Chinese, English, Japanese, Korean, German, French, Russian, Portuguese, Spanish, and Italian**.
</Note>

### Model Selection Guide

<AccordionGroup>
  <Accordion title="CustomVoice Models" icon="users">
    Choose these models when you want to use **predefined premium timbres** with optional instruction-based style control. The 1.7B variant supports natural language instructions to control tone, emotion, and prosody.

    **Use cases**: Professional content creation, audiobooks, consistent character voices
  </Accordion>

  <Accordion title="VoiceDesign Model" icon="palette">
    Choose this model when you want to **create custom voices from natural language descriptions**. Describe the desired voice characteristics (age, gender, tone, emotion) and the model will generate matching speech.

    **Use cases**: Character design, creative projects, personalized voice synthesis
  </Accordion>

  <Accordion title="Base Models" icon="clone">
    Choose these models when you need **voice cloning** from a 3-second audio sample, or when you want to **fine-tune** the model for specialized domains.

    **Use cases**: Voice cloning, custom speaker adaptation, fine-tuning for specific applications
  </Accordion>
</AccordionGroup>

## Next Steps

<CardGroup cols={2}>
  <Card title="Installation" icon="download" href="/installation">
    Set up your environment and install Qwen3-TTS
  </Card>

  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Generate your first speech with Qwen3-TTS
  </Card>
</CardGroup>