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Gemini 3.8 Flash Lite TTS

All text to speech models

Generate expressive speech with Gemini 3.8 Flash Lite TTS. Choose from 30 voices, guide delivery with style instructions, and create single-speaker narration or two-speaker dialogue.

Inference$ Commercial useFrom 1 credit per run

About Gemini 3.8 Flash Lite TTS

Generate expressive speech with Gemini 3.8 Flash Lite TTS. Choose from 30 voices, guide delivery with style instructions, and create single-speaker narration or two-speaker dialogue.

text-to-speechaudiodialoguevoiceover

Pricing

A run with the default settings costs 1 credits. The exact cost updates in the playground as you change settings, and you're only charged when you press Run. Failed runs are refunded automatically.

Inputs

prompttextarea

Verbatim text for single-speaker speech. Put delivery directions in style_instructions; inline vocal events may use <laugh> or <sigh>. For dialogue, omit prompt and provide speakers and turns instead. The provider limits the complete input to 8,192 tokens.

style_instructionstextarea

Delivery style, separate from the spoken transcript. Applies to all turns unless overridden.

voiceselectdefault: "Kore"

Prebuilt voice for single-speaker speech.

Options: Achernar, Achird, Algenib, Algieba, Alnilam, Aoede, Autonoe, Callirrhoe, Charon, Despina, Enceladus, Erinome, Fenrir, Gacrux, Iapetus, Kore, Laomedeia, Leda, Orus, Pulcherrima, Puck, Rasalgethi, Sadachbia, Sadaltager, Schedar, Sulafat, Umbriel, Vindemiatrix, Zephyr, Zubenelgenubi

speakersjson

Exactly two distinct speaker aliases and their prebuilt voices for dialogue.

turnsjson

Ordered dialogue turns, each identifying a configured speaker.

enable_safety_checkerbooleandefault: true

Authorized callers may set false to request relaxed screening.

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