Editorial illustration for Gemini 3.1 Flash TTS adds audio tags to control vocal style, pace
Gemini 3.1 Flash: AI Voices Get More Human-Like
Gemini 3.1 Flash TTS adds audio tags to control vocal style, pace
Voice is no longer a setting you toggle, it’s a story you write. With Gemini 3.1 Flash TTS, developers can now embed natural language commands directly into text, turning raw input into precisely directed speech. Audio tags let you control vocal style, pace, and delivery with a level of granularity that feels less like programming and more like directing.
Want a whispered reply in a tense scene? A rushed announcement with breathless urgency? You simply describe it.
This update puts the developer firmly in the director’s chair, where scene direction and dialogue instructions become part of the prompt itself. The result is AI speech that doesn’t just read, it performs.
All audio generated by Gemini 3.1 Flash TTS is watermarked with SynthID.
The director’s chair is now yours , and the script is made of plain text. These audio tags don’t just add nuance; they hand you the faders, the booth, the final cut. You can whisper a stage direction, nudge the pace, or reshape the emotional arc of a sentence without touching a single waveform.
That’s not iteration. That’s authorship. What began as a voice is now a palette.
And with every tag you drop into the input, you’re not just generating speech , you’re composing it. The next generation of expressive AI speech doesn’t ask you to accept its performance. It asks you to direct it.
So go ahead. Set the scene.
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Common Questions Answered
How do audio tags in Gemini 3.1 Flash TTS improve synthetic voice generation?
Audio tags allow developers to embed natural language commands directly into text input, providing granular control over vocal style, pace, and delivery. These tags enable more expressive and human-like speech synthesis by allowing precise adjustments to how synthetic voices sound.
Where can developers currently access and experiment with Gemini 3.1 Flash TTS audio tags?
Developers can test the new TTS features through the Gemini API and Google AI Studio, which offer configurable controls for voice generation. Enterprises can also gain early access through Vertex AI, while Workspace users will see the technology integrated into their familiar tools.
What problem does Gemini 3.1 Flash TTS aim to solve in text-to-speech technology?
The new TTS technology addresses the longstanding challenge of making synthetic voices sound less robotic and more human-like by introducing audio tags that allow fine-tuning of speech nuances. These tags help capture subtle vocal characteristics like pauses, emphasis, and conversational tempo without requiring complex programming.
Further Reading
- Text-to-speech generation (TTS) | Gemini API — Google AI Dev
- Gemini 3.1 Flash Live: Making audio AI more natural and reliable — Google Blog
- Gemini-TTS | Cloud Text-to-Speech - Google Cloud Documentation — Google Cloud Docs
- Google Launches Gemini 3.1 Flash Live, the Voice Model ... — Dapta
