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HeyGen adds speech-direction tags to its voice API

HeyGen’s November developer changelog says its text-to-speech and streaming endpoints now accept in-text audio tags such as whispers and laughs. Public and instant voices perform the tags on its three HeyGen Voice models; professional voice clones do not. The changelog gives a month but no trustworthy exact day, so the release date remains unknown.

HeyGen

HeyGen Voice audio tags

Audio

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Primary source · HeyGen

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