Google AI launches Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS

Google AI is launching Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS, which it calls its most expressive audio models yet. The models can create custom voices across more than 100 languages or use more than 2,000 ready-made voices. They can direct back-and-forth conversations, guide delivery line by line, and add cues such as laughs or an active-listening “mhm.” Google AI says they can generate hours of consistent, glitch-free audio.

Gemini 3.8 Flash TTS is for designing vocal personas from scratch with line-by-line control, aimed at high-fidelity production such as games, audiobooks, and podcasts. Gemini 3.8 Flash-Lite TTS is built to adjust tone and pacing automatically for near real-time voice agents, as well as cost-efficient, high-volume dubbing and bulk audio.