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google /gemini-3.1-flash-tts:165bf1e8

Input schema

The fields you can use to run this model with an API. If you don’t give a value for a field its default value will be used.

Field Type Default value Description
text
string
The text to convert to speech. Supports markup tags like [sigh], [laughing], [whispering], [shouting], [extremely fast] for expressive delivery. Maximum 4,000 bytes.
voice
None
Kore
Voice to use for speech generation
prompt
string
Say the following.
Style instructions to control how the text is spoken. Use natural language to describe the desired tone, pace, accent, and emotion. For example: "Say this in a calm, professional tone" or "Speak with excitement and energy". Maximum 4,000 bytes.
language_code
string
en-US
Language code for the speech output (BCP-47 format)

Output schema

The shape of the response you’ll get when you run this model with an API.

Schema
{'format': 'uri', 'title': 'Output', 'type': 'string'}