Google's Gemini 3.1 Flash TTS: Revolutionizing Voice AI with Unprecedented Control

Google has unveiled Gemini 3.1 Flash TTS, a new text-to-speech (TTS) model designed to provide developers and enterprises with unparalleled control, expressiveness, and quality in AI-generated voices. This technology promises to transform how we interact with AI, offering more natural and nuanced audio experiences. The model's capabilities extend across more than 70 languages, making it a versatile tool for global applications.

Enhanced Controllability with Audio Tags

A key innovation in Gemini 3.1 Flash TTS is the introduction of audio tags. These tags allow developers to fine-tune various aspects of the generated speech, including vocal style, pace, and overall delivery. This level of control opens up new possibilities for creating customized and engaging audio content.

Experimentation in Google AI Studio

Google is providing developers with the opportunity to experiment with audio tags directly within Google AI Studio. This hands-on experience allows users to explore the model's capabilities and discover the best ways to leverage audio tags for their specific needs. This interactive approach fosters innovation and accelerates the development of new applications.

High-Fidelity Speech Across 70+ Languages

Gemini 3.1 Flash TTS delivers high-fidelity speech and precise control in over 70 languages. This broad language support makes it a valuable asset for businesses and organizations operating on a global scale. The model's ability to maintain quality and nuance across different languages is a significant advancement in TTS technology.

Creative Precision for Enterprises

The introduction of audio tags provides a new level of creative precision for enterprises looking to integrate AI-generated voices into their workflows. This technology enables businesses to create more engaging and personalized audio experiences for their customers. For example, a marketing team could use audio tags to create different voice styles for various ad campaigns, tailoring the message to specific target audiences.

Integration with Vertex AI

Enterprises can leverage the power of Gemini 3.1 Flash TTS by utilizing audio tags within Vertex AI. This integration streamlines the process of incorporating high-quality, customizable speech into existing AI-powered applications and services. This allows businesses to scale their audio content creation efforts efficiently.

Impressive Performance Benchmarks

Gemini 3.1 Flash TTS has demonstrated impressive performance, achieving an Elo score of 1,211 on the Artificial Analysis TTS leaderboard. This score reflects the model's superior quality and naturalness compared to other TTS systems. The model also stands out with native multi-speaker dialogue capabilities, further enhancing its versatility.

Conclusion

Gemini 3.1 Flash TTS represents a significant leap forward in text-to-speech technology. Its enhanced controllability, expressiveness, and high-fidelity speech across numerous languages make it a powerful tool for developers and enterprises alike. As AI continues to evolve, innovations like Gemini 3.1 Flash TTS will play a crucial role in shaping the future of human-computer interaction. It remains to be seen how this technology will be integrated into products like Google Gemini and Google Vids.

https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-flash-tts/