Qwen3-TTS 1.7B CustomVoice

Qwen3-TTS 1.7B CustomVoice is a text-to-speech model from Alibaba that offers nine premium preset timbres across various combinations of gender, age, language, and dialect. It provides precise style control over target voices through user instructions, supports voice cloning from a 3-second sample, and generates speech in 10+ languages with latency as low as 97ms.

Complete technical specification for integration
Ready-to-use code snippets for common workflows
text-to-audio
Roller Derby Broadcast Vocal Stinger$0.0015~2sSteel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes.
import { createClient } from '@runware/sdk'
const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()
const [result] = await client.run({
model: 'alibaba:qwen@3-tts-1.7b-customvoice',
positivePrompt: 'Deliver as a high-energy sports broadcast stinger with crisp diction, a driving percussive cadence, and dramatic micro-pauses. Build intensity through the final phrase and finish with confident impact.',
speech: {
text: 'Steel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes.',
voice: 'serena',
language: 'English'
}
})import asyncio
import os
from runware import Runware
async def main():
async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
results = await client.run({
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a high-energy sports broadcast stinger with crisp diction, a driving percussive cadence, and dramatic micro-pauses. Build intensity through the final phrase and finish with confident impact.",
"speech": {
"text": "Steel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes.",
"voice": "serena",
"language": "English"
}
})
asyncio.run(main())curl https://api.runware.ai/v1 \
-H "Authorization: Bearer $RUNWARE_API_KEY" \
-H "Content-Type: application/json" \
-d '[
{
"taskType": "audioInference",
"taskUUID": "5b1bac8e-d1ee-46af-8153-b945d1909d36",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a high-energy sports broadcast stinger with crisp diction, a driving percussive cadence, and dramatic micro-pauses. Build intensity through the final phrase and finish with confident impact.",
"speech": {
"text": "Steel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes.",
"voice": "serena",
"language": "English"
}
}
]'runware run alibaba:qwen@3-tts-1.7b-customvoice \
positivePrompt="Deliver as a high-energy sports broadcast stinger with crisp diction, a driving percussive cadence, and dramatic micro-pauses. Build intensity through the final phrase and finish with confident impact." \
speech.text="Steel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes." \
speech.voice=serena \
speech.language=English{
"taskType": "audioInference",
"taskUUID": "5b1bac8e-d1ee-46af-8153-b945d1909d36",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a high-energy sports broadcast stinger with crisp diction, a driving percussive cadence, and dramatic micro-pauses. Build intensity through the final phrase and finish with confident impact.",
"speech": {
"text": "Steel sings. Wheels spark. Welcome to the Night Shift Derby Report—fast calls, hard turns, no brakes.",
"voice": "serena",
"language": "English"
}
}Response
{
"taskType": "audioInference",
"taskUUID": "5b1bac8e-d1ee-46af-8153-b945d1909d36",
"audioUUID": "dc010dca-871a-436c-bfd4-beb446b1cb6c",
"audioURL": "https://am.runware.ai/audio/os/a09dlim3/ws/5/ai/dc010dca-871a-436c-bfd4-beb446b1cb6c.wav",
"cost": 0.0015
}text-to-audio
Seaweed Feed Technology Explainer Voiceover$0.0106~8sA dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future.
import { createClient } from '@runware/sdk'
const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()
const [result] = await client.run({
model: 'alibaba:qwen@3-tts-1.7b-customvoice',
positivePrompt: 'Deliver as a confident, approachable agricultural technology narrator. Sound practical rather than promotional, with clear pacing, warm authority, and subtle emphasis on the key benefits.',
speech: {
text: 'A dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future.',
voice: 'dylan',
language: 'English',
speed: 1
}
})import asyncio
import os
from runware import Runware
async def main():
async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
results = await client.run({
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a confident, approachable agricultural technology narrator. Sound practical rather than promotional, with clear pacing, warm authority, and subtle emphasis on the key benefits.",
"speech": {
"text": "A dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future.",
"voice": "dylan",
"language": "English",
"speed": 1
}
})
asyncio.run(main())curl https://api.runware.ai/v1 \
-H "Authorization: Bearer $RUNWARE_API_KEY" \
-H "Content-Type: application/json" \
-d '[
{
"taskType": "audioInference",
"taskUUID": "bdbb44ad-7f83-42e0-8e81-ce0db761462c",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a confident, approachable agricultural technology narrator. Sound practical rather than promotional, with clear pacing, warm authority, and subtle emphasis on the key benefits.",
"speech": {
"text": "A dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future.",
"voice": "dylan",
"language": "English",
"speed": 1
}
}
]'runware run alibaba:qwen@3-tts-1.7b-customvoice \
positivePrompt="Deliver as a confident, approachable agricultural technology narrator. Sound practical rather than promotional, with clear pacing, warm authority, and subtle emphasis on the key benefits." \
speech.text="A dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future." \
speech.voice=dylan \
speech.language=English \
speech.speed=1{
"taskType": "audioInference",
"taskUUID": "bdbb44ad-7f83-42e0-8e81-ce0db761462c",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Deliver as a confident, approachable agricultural technology narrator. Sound practical rather than promotional, with clear pacing, warm authority, and subtle emphasis on the key benefits.",
"speech": {
"text": "A dairy farm’s emissions are shaped by thousands of small biological processes. One of the biggest happens during digestion, when cows naturally produce methane. Red seaweed offers a promising new approach. Added to feed in carefully measured amounts, its active compounds are designed to interrupt methane formation in the rumen without changing the farmer’s daily routine. The supplement blends into existing rations, while monitoring helps each farm track animal health, productivity, and emissions performance. It’s not a replacement for good nutrition or responsible herd management. It’s another practical tool—helping dairies produce the food people rely on while moving toward a lower-carbon future.",
"voice": "dylan",
"language": "English",
"speed": 1
}
}Response
{
"taskType": "audioInference",
"taskUUID": "bdbb44ad-7f83-42e0-8e81-ce0db761462c",
"audioUUID": "239d6246-a5a6-4a0f-8b15-98a4d14f070d",
"audioURL": "https://am.runware.ai/audio/os/a06dlim3/ws/5/ai/239d6246-a5a6-4a0f-8b15-98a4d14f070d.wav",
"cost": 0.0106
}text-to-audio
Geothermal Control Room Voice Bed$0.0048~5sControl to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen.
import { createClient } from '@runware/sdk'
const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()
const [result] = await client.run({
model: 'alibaba:qwen@3-tts-1.7b-customvoice',
positivePrompt: 'Speak like a seasoned geothermal plant controller over an internal radio: calm, restrained, slightly hushed, and matter-of-fact, with natural pauses between status updates.',
speech: {
text: 'Control to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen.',
voice: 'uncle_fu',
language: 'English'
}
})import asyncio
import os
from runware import Runware
async def main():
async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
results = await client.run({
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak like a seasoned geothermal plant controller over an internal radio: calm, restrained, slightly hushed, and matter-of-fact, with natural pauses between status updates.",
"speech": {
"text": "Control to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen.",
"voice": "uncle_fu",
"language": "English"
}
})
asyncio.run(main())curl https://api.runware.ai/v1 \
-H "Authorization: Bearer $RUNWARE_API_KEY" \
-H "Content-Type: application/json" \
-d '[
{
"taskType": "audioInference",
"taskUUID": "b53f1f15-f439-4efb-a839-2e5f42f8ddc3",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak like a seasoned geothermal plant controller over an internal radio: calm, restrained, slightly hushed, and matter-of-fact, with natural pauses between status updates.",
"speech": {
"text": "Control to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen.",
"voice": "uncle_fu",
"language": "English"
}
}
]'runware run alibaba:qwen@3-tts-1.7b-customvoice \
positivePrompt="Speak like a seasoned geothermal plant controller over an internal radio: calm, restrained, slightly hushed, and matter-of-fact, with natural pauses between status updates." \
speech.text="Control to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen." \
speech.voice=uncle_fu \
speech.language=English{
"taskType": "audioInference",
"taskUUID": "b53f1f15-f439-4efb-a839-2e5f42f8ddc3",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak like a seasoned geothermal plant controller over an internal radio: calm, restrained, slightly hushed, and matter-of-fact, with natural pauses between status updates.",
"speech": {
"text": "Control to lower gallery. Circulation pump three is holding at forty-two hertz. Brine return temperature is stable, and pressure across the west manifold remains within range. Leave the bypass valve where it is. We’ll take the next reading after the tremor train clears. Log this as routine operations, zero two seventeen.",
"voice": "uncle_fu",
"language": "English"
}
}Response
{
"taskType": "audioInference",
"taskUUID": "b53f1f15-f439-4efb-a839-2e5f42f8ddc3",
"audioUUID": "074e671d-6649-403a-923e-350b0a358071",
"audioURL": "https://am.runware.ai/audio/os/a01d21/ws/5/ai/074e671d-6649-403a-923e-350b0a358071.wav",
"cost": 0.0048
}text-to-audio
Natural Return Service Explainer Voiceover$0.0084~8sThere is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal.
import { createClient } from '@runware/sdk'
const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()
const [result] = await client.run({
model: 'alibaba:qwen@3-tts-1.7b-customvoice',
positivePrompt: 'Speak with gentle confidence and sincere warmth. Keep the delivery calm, grounded, and informative rather than sentimental or promotional. Allow brief pauses after reflective phrases.',
speech: {
text: 'There is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal.',
voice: 'serena',
language: 'English'
}
})import asyncio
import os
from runware import Runware
async def main():
async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
results = await client.run({
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak with gentle confidence and sincere warmth. Keep the delivery calm, grounded, and informative rather than sentimental or promotional. Allow brief pauses after reflective phrases.",
"speech": {
"text": "There is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal.",
"voice": "serena",
"language": "English"
}
})
asyncio.run(main())curl https://api.runware.ai/v1 \
-H "Authorization: Bearer $RUNWARE_API_KEY" \
-H "Content-Type: application/json" \
-d '[
{
"taskType": "audioInference",
"taskUUID": "42c5becb-5e1b-4786-b97b-3d33a8107f18",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak with gentle confidence and sincere warmth. Keep the delivery calm, grounded, and informative rather than sentimental or promotional. Allow brief pauses after reflective phrases.",
"speech": {
"text": "There is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal.",
"voice": "serena",
"language": "English"
}
}
]'runware run alibaba:qwen@3-tts-1.7b-customvoice \
positivePrompt="Speak with gentle confidence and sincere warmth. Keep the delivery calm, grounded, and informative rather than sentimental or promotional. Allow brief pauses after reflective phrases." \
speech.text="There is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal." \
speech.voice=serena \
speech.language=English{
"taskType": "audioInference",
"taskUUID": "42c5becb-5e1b-4786-b97b-3d33a8107f18",
"model": "alibaba:qwen@3-tts-1.7b-customvoice",
"positivePrompt": "Speak with gentle confidence and sincere warmth. Keep the delivery calm, grounded, and informative rather than sentimental or promotional. Allow brief pauses after reflective phrases.",
"speech": {
"text": "There is another way to return to the earth. Natural organic reduction gently transforms a person’s remains into nutrient-rich soil. In a private vessel, plant materials and naturally occurring microbes support the process over several weeks. The soil is then carefully tested and may be returned to the family for a garden, conservation land, or a place with personal meaning. Every step is managed by licensed professionals, with dignity, transparency, and care. For families seeking a lighter environmental footprint, it is a simple choice rooted in renewal.",
"voice": "serena",
"language": "English"
}
}Response
{
"taskType": "audioInference",
"taskUUID": "42c5becb-5e1b-4786-b97b-3d33a8107f18",
"audioUUID": "8964b22d-eb15-4c40-8971-856a067636e9",
"audioURL": "https://am.runware.ai/audio/os/a05d22/ws/5/ai/8964b22d-eb15-4c40-8971-856a067636e9.wav",
"cost": 0.0084
}