Category: provider

Model Studio CosyVoice Voice Clone

Use the CosyVoice voice enrollment API to create cloned voices from public reference audio.

Critical model names

Use model="voice-enrollment" and one of these target_model values:

• cosyvoice-v3.5-plus

• cosyvoice-v3.5-flash

• cosyvoice-v3-plus

• cosyvoice-v3-flash

• cosyvoice-v2

Recommended default in this repo:

• target_model="cosyvoice-v3.5-plus"

Region and compatibility

• cosyvoice-v3.5-plus and cosyvoice-v3.5-flash are available only in China mainland deployment mode (Beijing endpoint).

• In international deployment mode (Singapore endpoint), cosyvoice-v3-plus and cosyvoice-v3-flash do not support voice clone/design.

• The target_model used during enrollment must match the model used later in speech synthesis, otherwise synthesis fails.

Endpoint

• Domestic: https://dashscope.aliyuncs.com/api/v1/services/audio/tts/customization

• International: https://dashscope-intl.aliyuncs.com/api/v1/services/audio/tts/customization

Prerequisites

• Set DASHSCOPE_API_KEY in your environment, or add dashscope_api_key to ~/.alibabacloud/credentials .

• Provide a public audio URL for the enrollment sample.

Normalized interface (cosyvoice.voice_clone)

Request

• model (string, optional): fixed to voice-enrollment

• target_model (string, optional): default cosyvoice-v3.5-plus

• prefix (string, required): letters/digits only, max 10 chars

• voice_sample_url (string, required): public audio URL

• language_hints (array[string], optional): only first item is used

• max_prompt_audio_length (float, optional): only for cosyvoice-v3.5-plus , cosyvoice-v3.5-flash , cosyvoice-v3-flash

• enable_preprocess (bool, optional): only for cosyvoice-v3.5-plus , cosyvoice-v3.5-flash , cosyvoice-v3-flash

Response

• voice_id (string): use this as the voice parameter in later TTS calls

• request_id (string)

• usage.count (number, optional)

Operational guidance

• For Chinese dialect reference audio, keep language_hints=["zh"] ; control dialect style later in synthesis via text or instruct .

• For cosyvoice-v3.5-plus , supported language_hints include zh , en , fr , de , ja , ko , ru , pt , th , id , vi .

• Avoid frequent enrollment calls; each call creates a new custom voice and consumes quota.

Local helper script

Prepare a normalized request JSON:

python skills/ai/audio/alicloud-ai-audio-cosyvoice-voice-clone/scripts/prepare_cosyvoice_clone_request.py
--target-model cosyvoice-v3.5-plus
--prefix myvoice
--voice-sample-url https://example.com/voice.wav
--language-hint zh

Validation

mkdir -p output/alicloud-ai-audio-cosyvoice-voice-clone for f in skills/ai/audio/alicloud-ai-audio-cosyvoice-voice-clone/scripts/*.py; do python3 -m py_compile "$f" done echo "py_compile_ok" > output/alicloud-ai-audio-cosyvoice-voice-clone/validate.txt

Pass criteria: command exits 0 and output/alicloud-ai-audio-cosyvoice-voice-clone/validate.txt is generated.

Output And Evidence

• Save artifacts, command outputs, and API response summaries under output/alicloud-ai-audio-cosyvoice-voice-clone/ .

• Include target_model , prefix , and sample URL in the evidence file.

References

• references/api_reference.md

• references/sources.md