TTS Models & Migration

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Model overview

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Public model ID list

myvocal_v3
myvocal_v3_accent_enhance
english_v2
spanish_es
portuguese_pt
multilingual_v2
spanish_la
portuguese_la

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V3 language scope

• Supported language count: 98
• Excluded from support: Kirghiz, Lingala

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Accent model (myvocal_v3_accent_enhance)

• Supported language count: 40 language codes, plus auto.
• Omitting language is equivalent to auto.
• A code outside this list is rejected with code = 10004. This includes plain V3 codes the Accent model does not support, such as hmn.
• Legacy mapped enum values (for example US_ENGLISH) are not Accent codes. Use en.

auto
zh
yue
en
ar
ru
es
fr
pt
de
tr
nl
uk
vi
id
ja
it
ko
th
pl
ro
el
cs
fi
hi
bg
da
he
ms
fa
sk
sv
hr
fil
hu
no
sl
ca
nn
ta
af

• Voices: use the compatible voices returned by GET /sound_clone/api/v1/voices?modelId=myvocal_v3_accent_enhance. That list includes your own compatible voices and the prebuilt voices available to your API key. A voice listed there is a selection aid, not a guarantee that a later generation will succeed.
• voiceSettings.stability: a value inside the legal range (0.1 to 1) is accepted for compatibility but has no effect on this model. Out-of-range values are still rejected with code = 10006.
• Prompt tags: inline [tag] prompt control is documented for myvocal_v3. It is not documented as equivalent for the Accent model; send plain text.
• Character metering, plan limits and rates stay the same as the other TTS models.

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Default path vs explicit modelId

• Default path: omit modelId and follow current V2/default mapping rules.
• Explicit V3 path: set modelId to myvocal_v3.
• Explicit Accent path: set modelId to myvocal_v3_accent_enhance.

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V2 to V3 migration guidance

1. Keep your V2 flow as fallback.
2. Add a feature flag for modelId: "myvocal_v3".
3. Use explicit language if you want deterministic target language output.
4. Omit language for auto-detect behavior on V3.
5. Roll out with traffic slices and monitor output quality.

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Migration to the Accent model