HeyGenTextToSpeechNode - ComfyUI Built-in Node Documentation

Generate speech audio from text using HeyGen’s Starfish TTS engine. This node includes HeyGen’s most popular voices across 17 languages.

Inputs

Parameter	Description	Data Type	Required	Range
`text`	Text to synthesize (up to 5000 characters). The generated speech must be at least 1 second long.	STRING	Yes	1 to 5000 characters
`voice`	Voice to use (curated from HeyGen’s most popular Starfish-compatible voices).	STRING	Yes	Multiple options available
`custom_voice_id`	Optional HeyGen voice ID. When set, overrides the voice selected above. The voice must support the Starfish engine.	STRING	No	Any valid HeyGen voice ID
`speed`	Speech speed multiplier (default: 1.0).	FLOAT	No	0.5 to 2.0 (step: 0.05)
`ssml`	Treat the text as SSML markup (for pauses, emphasis, and pronunciation control) (default: False).	BOOLEAN	No	True / False
`seed`	Not sent to HeyGen; change it to force a re-run (default: 42).	INT	No	0 to 2147483647

Output Name	Description	Data Type
`AUDIO`	The synthesized speech audio generated from the input text.	AUDIO

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