Technical Trigger
The Gemini 3.1 Flash TTS update introduces audio tags, which are embedded directly into the text input to control vocal style, pace, and delivery. The scene direction, speaker-level specificity, and seamless export features provide developers with granular creative control.
Developer / Implementation Hook
Developers can start experimenting with audio tags in Google AI Studio, using configurable controls to place themselves in the “director’s chair”. They can define the environment, provide specific dialogue instructions, and cast characters using unique Audio Profiles. The Director's Notes feature allows developers to toggle pace, tone, and accent, and inline tags enable speakers to change expression mid-sentence.
The Structural Shift
The introduction of audio tags represents a shift from basic text-to-speech to expressive speech generation, enabling developers to create more immersive and engaging audio experiences.
Early Warning — Act Before Mainstream
To take advantage of this update, developers can:
* Experiment with audio tags in Google AI Studio to create high-fidelity speech generation
* Use the scene direction feature to define the environment and provide specific dialogue instructions
* Utilize the speaker-level specificity feature to cast characters using unique Audio Profiles and toggle pace, tone, and accent using Director's Notes