Gemini 3.1 Flash TTS Unveiled: Unprecedented Control and Expressiveness in AI Speech

product #voice 🏛️ Official|Analyzed: Apr 15, 2026 22:37•

Published: Apr 15, 2026 15:00

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1 min read

Analysis

Google's latest audio model, Gemini 3.1 Flash TTS, marks a massive leap forward in natural-sounding AI speech. By introducing granular audio tags, creators and developers can now intuitively direct vocal style and pacing using simple natural language commands. Supporting over 70 languages and featuring built-in SynthID watermarking, this launch brilliantly combines high-fidelity expressiveness with responsible deployment.

Key Takeaways

•Granular audio tags enable users to fine-tune vocal style, pacing, and delivery using natural language commands.
•The model supports highly expressive and natural-sounding speech generation in over 70 languages.
•All generated audio is seamlessly watermarked with SynthID to ensure responsible use and prevent misinformation.

Reference / Citation

"Our newest audio model introduces granular audio tags that give you precise control to direct AI speech for expressive audio generation."

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Google AIApr 15, 2026 15:00

* Cited for critical analysis under Article 32.

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Source: Google AI