Qwen3-TTS 1.7B VoiceDesign
Qwen3-TTS 1.7B VoiceDesign is a text-to-speech model from Alibaba that creates custom voices from natural language descriptions specifying emotion, tone, and prosody. It supports voice cloning from a 3-second audio sample, generates speech in 10+ languages including Chinese, English, Japanese, Korean, and European languages, and achieves latency as low as 97ms.
API Reference
INTEGRATE
Complete technical specification for integration
Request Response
Examples 4
CODE
Ready-to-use code snippets for common workflows
Museum Planetarium Audio Guide
{
"taskType": "audioInference",
"taskUUID": "7a687894-17db-4452-a7c4-87929a5f31a7",
"audioUUID": "7aab316a-f086-4cbd-80ad-0125f4311c04",
"audioURL": "https://am.runware.ai/audio/os/a15d18/ws/5/ai/7aab316a-f086-4cbd-80ad-0125f4311c04.wav",
"cost": 0.0004
} {
"taskType": "audioInference",
"taskUUID": "7a687894-17db-4452-a7c4-87929a5f31a7",
"model": "alibaba:qwen@3-tts-1.7b-voicedesign",
"positivePrompt": "A composed, knowledgeable female voice in her forties with a clear international English accent, gentle resonance, measured pacing, and soft breath control. The tone is welcoming and intellectually curious, like a senior museum guide leading visitors beneath a domed star theater. Subtle awe on cosmic phrases, crisp diction on scientific terms, never theatrical, never robotic. Warm, polished, intimate public-speaking quality with natural pauses and graceful sentence endings.",
"speech": {
"text": "Welcome to the Hall of Ancient Skies. Above you, the ceiling recreates the winter constellations as they were charted over a thousand years ago. Notice how Orion stands slightly tilted compared with modern maps; this projection follows the perspective used by navigators who crossed open water with nothing but memory, geometry, and nerve. To your left is a bronze armillary sphere, its rings modeling the heavens as a set of interlocking paths. It is not only an instrument, but a theory made visible. As the lights dim, watch the red point near the horizon. That is Mars, rendered as it appeared during a famously bright opposition. For many cultures, such moments were more than astronomical events. They were signals, arguments, omens, and invitations to ask a daring question: if the sky changes, what else might change with it?",
"voice": "design",
"language": "English",
"speed": 0.94
},
"settings": {
"maxNewTokens": 2048
}
}{
"taskType": "audioInference",
"taskUUID": "7a687894-17db-4452-a7c4-87929a5f31a7",
"audioUUID": "7aab316a-f086-4cbd-80ad-0125f4311c04",
"audioURL": "https://am.runware.ai/audio/os/a15d18/ws/5/ai/7aab316a-f086-4cbd-80ad-0125f4311c04.wav",
"cost": 0.0004
}After-Hours Train Platform Monologue
{
"taskType": "audioInference",
"taskUUID": "cab3d9ce-4e46-45f3-a82e-9934483ce13d",
"audioUUID": "d2b86525-9c38-4409-a9ca-c8964cdf34c0",
"audioURL": "https://am.runware.ai/audio/os/a22d05/ws/5/ai/d2b86525-9c38-4409-a9ca-c8964cdf34c0.wav",
"cost": 0.0002
} {
"taskType": "audioInference",
"taskUUID": "cab3d9ce-4e46-45f3-a82e-9934483ce13d",
"model": "alibaba:qwen@3-tts-1.7b-voicedesign",
"positivePrompt": "A middle-aged female voice with low, smoky warmth and precise diction, sounding like a veteran rail announcer speaking after a very long shift. Calm, intimate, slightly tired, with understated empathy rather than cheerfulness. Medium-slow pace, gentle breath between sentences, soft downward inflections, subtle urban accent, clear consonants, natural pauses, and a reflective late-night atmosphere.",
"speech": {
"text": "Last service to Briar End now arriving on platform four. Please stand back from the edge and let passengers leave the train first. If you missed your connection, speak to the night desk beside the main exit. They can help with onward travel, warm waiting areas, and hotel information. To the person who left a blue notebook near the ticket machines, it has been handed in. And to everyone still making their way home, take your time, keep your belongings close, and travel safely tonight.",
"voice": "design",
"language": "English",
"speed": 0.94
},
"settings": {
"maxNewTokens": 2048
}
}{
"taskType": "audioInference",
"taskUUID": "cab3d9ce-4e46-45f3-a82e-9934483ce13d",
"audioUUID": "d2b86525-9c38-4409-a9ca-c8964cdf34c0",
"audioURL": "https://am.runware.ai/audio/os/a22d05/ws/5/ai/d2b86525-9c38-4409-a9ca-c8964cdf34c0.wav",
"cost": 0.0002
}Late-Night Pirate Radio Host
{
"taskType": "audioInference",
"taskUUID": "b4fdc8b4-0fbb-4c12-93b0-210198bf639d",
"audioUUID": "8f497a6c-71f8-4258-ae22-3d1ab0898473",
"audioURL": "https://am.runware.ai/audio/os/a04d20/ws/5/ai/8f497a6c-71f8-4258-ae22-3d1ab0898473.wav",
"cost": 0.0004
} {
"taskType": "audioInference",
"taskUUID": "b4fdc8b4-0fbb-4c12-93b0-210198bf639d",
"model": "alibaba:qwen@3-tts-1.7b-voicedesign",
"positivePrompt": "A husky middle-aged voice with magnetic late-night radio presence, lightly worn texture, intimate microphone closeness, dry humor, sharp diction, and a confidential tone that occasionally blooms into theatrical emphasis. Moderate pace with purposeful pauses, slightly lowered pitch, relaxed breath control, and the feeling of someone speaking to insomniacs across a sleeping city from a cramped rooftop studio.",
"speech": {
"text": "Good morning to the bakers, the coders, the taxi drivers, and everyone else keeping odd hours. You’ve found Channel Nine Point Three, the station that survives on stubborn wiring and borrowed coffee. Tonight’s question comes from a listener who swears the old freight elevator in Building C stops on a floor that does not exist on any plan. Now, I’m not saying I believe in phantom architecture. I’m saying that if a brass gate opens where a concrete wall should be, you take notes before you panic. So if you’re out there with a flashlight, a notebook, and regrettable curiosity, call in. Tell me what the air smelled like. Tell me whether the numbers above the door were painted or burned in. And most importantly, tell me if the music was already playing before the elevator arrived.",
"voice": "design",
"language": "English",
"speed": 0.96
},
"settings": {
"maxNewTokens": 2048
}
}{
"taskType": "audioInference",
"taskUUID": "b4fdc8b4-0fbb-4c12-93b0-210198bf639d",
"audioUUID": "8f497a6c-71f8-4258-ae22-3d1ab0898473",
"audioURL": "https://am.runware.ai/audio/os/a04d20/ws/5/ai/8f497a6c-71f8-4258-ae22-3d1ab0898473.wav",
"cost": 0.0004
}Crackling Lighthouse Weather Bulletin
{
"taskType": "audioInference",
"taskUUID": "60fb0d36-54c6-41b7-bd98-d884ea171b49",
"audioUUID": "c372cc9d-8905-4930-95c0-2564c65f7a53",
"audioURL": "https://am.runware.ai/audio/os/a11d13/ws/5/ai/c372cc9d-8905-4930-95c0-2564c65f7a53.wav",
"cost": 0.0003
} {
"taskType": "audioInference",
"taskUUID": "60fb0d36-54c6-41b7-bd98-d884ea171b49",
"model": "alibaba:qwen@3-tts-1.7b-voicedesign",
"positivePrompt": "A weathered middle-aged radio announcer voice with a faint maritime rasp, calm under pressure, clear diction, low-to-mid pitch, measured pacing, subtle analog broadcast character, reassuring but urgent, as if speaking from a remote lighthouse station during rough seas.",
"speech": {
"text": "Attention all small craft in the outer bay. Wind has shifted hard to the northeast and visibility is falling fast beyond the shoals. Repeat, visibility is dropping fast. If you can see the white tower, keep it off your port side and reduce speed before the rocks. Larger swells are arriving in uneven sets, and the channel markers may sound closer than they are. Harbor control reports one tug outbound at first light, but no additional escort tonight. Secure loose gear, check your compass twice, and answer on channel sixteen if you require guidance. This is Greycap Light Station, standing by.",
"voice": "design",
"language": "English",
"speed": 0.96
},
"settings": {
"maxNewTokens": 2048
}
}{
"taskType": "audioInference",
"taskUUID": "60fb0d36-54c6-41b7-bd98-d884ea171b49",
"audioUUID": "c372cc9d-8905-4930-95c0-2564c65f7a53",
"audioURL": "https://am.runware.ai/audio/os/a11d13/ws/5/ai/c372cc9d-8905-4930-95c0-2564c65f7a53.wav",
"cost": 0.0003
}