ActionSynthesiaUpdated May 2026

Which voices does Synthesia support?

Short answer: Drop the "Synthesia → List Voices" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 6 Synthesia actions

Sample request

{}

Returns

{
  "voices": [
    {
      "id": "v_abc",
      "gender": "female",
      "locale": "en-US",
      "displayName": "Anna (US)"
    }
  ]
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for List Voices.

Any of these apps can fire this action as part of a workflow.

Google Sheets → Synthesia

2 Google Sheets triggers

HubSpot → Synthesia

18 HubSpot triggers

FAQ

Questions about List Voices.

What does the List Voices action do in Synthesia?

Returns the voices available for Synthesia avatars, grouped by locale and gender. Useful for letting end users pick the language and tone of the generated video.

What inputs does List Voices require?

List Voices has no required inputs. Sensible defaults are applied if you leave fields blank.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Synthesia returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does List Voices support batch operations?

Yes. Run List Voices inside a Loop node to process arrays. Tiny Command handles Synthesia's rate limits automatically so you don't have to throttle manually.

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