Google · Expressive Gemini TTS

Gemini 3.8 Flash TTS

Two new text-to-speech models, Flash and Flash-Lite, improving on Gemini 3.1 Flash TTS with better long-form content, dual-speaker screenplay control and natural-language voice design rather than presets. More than 2,000 ready-made voices, expandable to unlimited custom ones, over 100 languages, voice replication from a 30-second consented sample, and conversational backchanneling. Google cites first place on the Hume AI Voice Design Benchmark at 71.4 and top Voice Arena placements for Japanese, Brazilian Portuguese, Vietnamese, Modern Standard Arabic, Mexican Spanish and Hindi. Rolling out through AI Studio, the Gemini API, Notebook and Vids; no pricing disclosed.