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Gemini 3.1 Flash TTS: the next generation of expressive AI speech
April 16, 2026
Gemini 3.1 Flash TTS is a new audio model that adds granular audio tags for precise control over expressive AI speech generation. This matters because it gives developers finer direction over prosody and delivery, which can improve the naturalness and usefulness of generated audio.
Our newest audio model introduces granular audio tags that give you precise control to direct AI speech for expressive audio generation.
Source: deepmind.google