Google Gemini TTS Upgrade: Supports 24 Languages, More Realistic Voice Communication

Google has released upgraded versions of its Gemini TTS model, Gemini 2.5 Flash and Pro text-to-speech models, improving expressiveness, speech rate control, and performance in multi-speaker scenarios. The new model offers better control over style, intonation, and pronunciation, adjusting speech rate according to context—speeding up when excited and slowing down for emphasis—and maintaining consistent character voices in multilingual dialogues for a more realistic experience.