Gemini 3.1 Flash TTS: finer control, richer speech
DeepMind’s latest audio model, Gemini 3.1 Flash TTS, brings a significant step forward in controllable, expressive text-to-speech. At the heart of the update are granular audio tags—compact instructions that let developers and creators steer prosody, emphasis, timing, and emotional nuance with precision.
Rather than relying on broad style presets, these tags allow fine-grained direction of how words are spoken, enabling more natural intonation, sharper emphasis where it matters, and subtle emotional coloring. The result is speech that sounds less robotic and more tailored to specific listening scenarios, from dramatic audiobook narration to conversational assistant responses.
Who benefits? The impact is wide: audio producers and game creators can craft distinct character voices; accessibility tools can provide clearer, more human-like read-aloud experiences; and product teams can build assistants that respond with appropriate tone and timing. Use cases include audiobooks, podcasts, customer support bots, interactive entertainment, and screen readers.
Gemini 3.1 Flash TTS represents a practical, developer-friendly advance in speech synthesis: a straightforward control mechanism that turns expressive audio from an art into an accessible tool for many more creators and teams.
- Precise control for expressive narration
- Better accessibility and user experience
- Faster iteration on voice and character design