Generate speech · Gemini

Node catalog Artificial intelligence

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Generate speech or a dialogue between two speakers.

Usage and specifics

Supply the required audio input or text and provider credential. Text and audio outputs depend on the operation; preserve MIME types when mapping. Demucs runs locally and needs installed dependencies; remote models depend on account access.

Technical type : generate_speech_google. Runtime : nodulz.

Credentials and prerequisites

Create and configure the credential : gemini

Create credentials in your nodulz instance’s Credentials area, then select them on the node. Availability depends on ownership and sharing. See the credentials guide for access and rotation.

Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

Parameter	Type	Default	Values / limits
`credentialId`	`string`	`""`	-
`timeoutSeconds`	`number`	`120`	-; ≥ 1, ≤ 3600
`text`	`string`	`""`	-
`instructions`	`string`	`""`	-
`model`	`string`	`"gemini-3.8-flash-tts"`	-; min 1, max 128
`voice`	`string`	`"Kore"`	-; min 1
`speakers`	`array`	`[]`	-; max 2
`speakers[].name`	`string`	-	-; min 1, max 100
`speakers[].voice`	`string`	-	-; min 1, max 100

Configuration help

credentialId AI credential: {provider} API credential accessible to the workflow owner. The provider bills API requests.
speakers Two-speaker dialogue: Configure two distinct speaker names and voices. Identify speakers in the text, for example Joe: Hello. Jane: Hi.
timeoutSeconds Timeout (seconds): Maximum AI request time, within the overall workflow timeout.

Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

json

{
  "credentialId": "",
  "timeoutSeconds": 120,
  "text": "",
  "instructions": "",
  "model": "gemini-3.8-flash-tts",
  "voice": "Kore",
  "speakers": []
}

Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.