HeyGen v5 digital twin

Takes fit, avatar, resolution and more, all optional. Served by fal.ai.

Inputs

0 required

Fit: How the avatar fits within the output frame (contain or cover)Optional · fit
Avatar: Name of the Avatar V-eligible avatar to useOptional · avatar
Resolution: Output resolution preset (720p, 1080p or 4k)Optional · resolution
Voice: Name of the text-to-speech voice to use for the avatar when ``audio_url`` is not providedOptional · voice
Prompt: Text the avatar will speakOptional · prompt
Audio URL: HTTP(S) URL of an audio file for the avatar to lip-sync toOptional · audio_url
Output format: Output container format (mp4 or webm)Optional · output_format
Background: Optional background to composite behind the avatarOptional · background
Watermark: Optional watermark image to overlay on the output videoOptional · watermark
Caption: Generate a sidecar SRT caption file alongside the videoOptional · caption
Aspect ratio: Aspect ratio of the output video (16:9, 9:16, 4:5, 5:4, 1:1 or auto)Optional · aspect_ratio
Remove background: Remove the avatar's backgroundOptional · remove_background

Price: Usage based, at the cost the provider reports for the call
Billing: Billed at the exact provider cost, without a per-call cap. The initial reservation is an estimate; additional usage is debited and unused funds are refunded.
Price checked: 7 October 2026

Your agent reads the schema and the price with inspect_tool before it runs the tool.

AI video generation