HeyGen Voice is HeyGen's in-house text-to-speech model, and heygen-voice-1 is its standard speech generation tier. Use a public voice or create a clone from a recording; public voices and clones use the same speech endpoints. It comes with 10 default voices and streams 44.1 kHz mono PCM audio, with support for 39 languages and up to 5,000 characters per request.
$0.0075
Share of requests served without a server error. Client errors (4xx) do not count.
Works with the OpenAI SDK pointed at our base URL. Every parameter is in the API reference.
Characters of text spoken per day on NagaAI, counted since November 2026.
HeyGen Voice is HeyGen's in-house text-to-speech model, and heygen-voice-1 is its standard speech generation tier. Use a public voice or create a clone from a recording; public voices and clones use the same speech endpoints.
On NagaAI, HeyGen Voice costs about $0.0075 per 1k chars. You pay only for what you use, with no subscription.
It takes text as input and returns audio.
Create an API key, copy the model ID from the top of this page and send requests with the OpenAI SDK pointed at NagaAI. The API section on this page has a ready example.
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