Gemini 3.1 Flash TTS: the next generation of expressive AI speech

What changed

Gemini 3.1 Flash TTS: the next generation of expressive AI speech Today, we’re introducing Gemini 3.1 Flash TTS, the latest text-to-speech model that delivers improved controllability, expressivity and quality — empowering developers, enterprises and everyday users to build the next generation of AI-speech applications. On the Artificial Analysis TTS leaderboard, a benchmark that captures thousands of blind human preferences, 3.1 Flash TTS achieved an impressive Elo score of 1,211. New audio tags for more expressive speech generation 3.1 Flash TTS also introduces audio tags — an intuitive way to control vocal style, pace and delivery.

Why it matters

A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.

How it compares

Related prior coverage to compare against:

• Introducing next-generation audio models in the API
• Introducing the Realtime API
• Introducing new audio and vision documentation in 🤗 Datasets

• Introducing next-generation audio models in the API similarity 0.24
• Introducing the Realtime API similarity 0.24
• Introducing new audio and vision documentation in 🤗 Datasets similarity 0.23