HeyGen · Voice model

HeyGen Voice

heygen/heygen-voice-1

Voice

Released Oct 13, 2026

HeyGen Voice is a text-to-speech model from HeyGen. It comes with 10 default voices, or bring your own HeyGen key to use voice clones from your own account. It streams...

Specifications

Input: text, up to 20,000 characters per call
Output: mp3 (default) or raw pcm
Voice: `voice`, default nadine · nadine, tabitha, bram, gareth, noelle, meredith, sabrina, lucian, weston, vincent
Billing: per character of input text

Use it

POST /api/v1/audio/speech · MCP speak · full reference

curl https://omnirail.org/api/v1/audio/speech \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"heygen/heygen-voice-1","input":"Hello from OmniRail. Every model, one key.","response_format":"mp3"}' \
  --output hello.mp3