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.
API Options
Platform-level options for task execution and delivery.
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taskType
string required value: audioInference -
Identifier for the type of task being performed
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taskUUID
string required UUID v4 -
UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.
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outputType
string default: URL -
Audio output type.
Allowed values 3 values
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outputFormat
string default: MP3 -
File format for the generated audio.
Allowed values 3 values
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webhookURL
string URI -
Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.
Learn more 1 resource
- Webhooks PLATFORM
- Webhooks
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deliveryMethod
string default: sync -
Determines how the API delivers task results.
Allowed values 2 values
- Returns complete results directly in the API response.
- Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.
Learn more 1 resource
- Task Polling PLATFORM
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uploadEndpoint
string URI -
Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.
Common use cases:
- Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- CDN integration: Upload to content delivery networks for immediate distribution.
// S3 presigned URL for secure upload https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600 // Google Cloud Storage presigned URL https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789 // Custom storage endpoint https://storage.example.com/uploads/generated-image.jpgThe content data will be sent as the request body to the specified URL when generation is complete.
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ttl
integer min: 60 -
Time-to-live (TTL) in seconds for generated content. Only applies when
outputTypeis 'URL'.
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includeCost
boolean default: false -
Include task cost in the response.
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numberResults
integer min: 1 max: 20 default: 1 -
Number of results to generate. Each result uses a different seed, producing variations of the same parameters.
Generation Parameters
Core parameters for controlling the generated content.
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model
string required value: alibaba:qwen@3-tts-1.7b-customvoice -
Identifier of the model to use for generation.
Learn more 3 resources
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positivePrompt
string -
Optional style or emotion hint for the voice. Example: 'Speak with great enthusiasm'.
Learn more 2 resources
-
speech
object required -
Settings for speech generation.
Properties 4 properties
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speech»texttext
string required max: 2000 -
Text to convert to speech.
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speech»voicevoice
string required default: auto -
Voice identifier to use. Set to 'auto' for automatic selection.
Allowed values 9 values
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speech»languagelanguage
string min: 1 default: Auto -
Language code for speech generation.
Allowed values 11 values
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speech»speedspeed
float min: 0.25 max: 4 step: 0.01 default: 1 -
Playback speed of the generated speech.
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Settings
Technical parameters to fine-tune the inference process. These must be nested inside the settings object.
settings object.-
settings»maxNewTokensmaxNewTokens
integer default: 2048 -
Audio output token cap. Higher values allow longer audio but risk hangs.