Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS are our most expressive audio generation models yet.

Generate custom character voices and direct scene dialogue across Google AI Studio, Gemini API, Gemini Enterprise, Gemini Notebook, and Google Vids.

Leland Rechis Group Product Manager Alan Cowen Director, Research Science, on Behalf of the Gemini Audio Team Today, we’re introducing two new text-to-speech models to the Gemini family, transforming voice generation from static presets into a dynamic creative studio.

These models enable creators, developers, and enterprises to create richer, more expressive audio experiences, while enabling improved user experiences in products like Gemini Notebook and Google Vids .

Gemini 3.8 Flash TTS: Built for deep creative direction and character design.

Create entirely new voices from scratch using natural language prompts to bring characters to life across gaming, immersive audiobooks, podcasts, and interactive media.

Direct every performance line by line with granular control over acting cues, pacing, dialect shifts, and backchanneling.

Gemini 3.8 Flash-Lite TTS: Built for high-volume, cost-efficient scale.

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