Gemini 3.1 Flash TTS: Developer Guide to Google's Most Controllable AI Voice Model (2026)

On April 15, 2026, Google launched Gemini 3.1 Flash TTS — and it quietly redraws the map for AI voice generation. Most text-to-speech APIs give you a voice, a speed slider, and maybe a handful of presets. Gemini 3.1 Flash TTS gives you 200+ audio tag...