Google has officially launched Gemini 3.1 Flash TTS, a revolutionary text-to-speech (TTS) model that aims to provide synthetic voices with a more natural and expressive quality. This new system enhances user control over speech delivery, making it simpler and more efficient for developers and content creators alike.
The Gemini 3.1 Flash TTS model is already making waves in the industry, having scored 1,211 Elo points on the TTS leaderboard, a rating system based on blind listening tests with thousands of human comparisons. This impressive score places it in second position globally, just behind Inworld TTS 1.5 Max, which scored 1,215 points, and ahead of ElevenLabs Eleven v3, which received a score of 1,179 points. Notably, the model has been recognized in the “most attractive quadrant” by Artificial Analysis, highlighting its exceptional quality and cost-effectiveness.
A key innovation in the Gemini 3.1 Flash TTS is the introduction of audio tags. This feature allows users to control the delivery of speech using straightforward text instructions. Developers can incorporate these tags directly into their scripts, enabling real-time adjustments to tone, pacing, and expression. Reports indicate that Gemini 3.1 Flash TTS supports over 200 such tags, providing a level of customization that is rarely seen in traditional TTS systems.
The inline prompting method employed by Gemini 3.1 allows users to shape the output of speech easily, minimizing the need for complex audio engineering. This approach encourages experimentation and fine-tuning of voice experiences, making it particularly appealing for developers.
Furthermore, Gemini 3.1 Flash TTS boasts support for more than 70 languages while also accommodating various regional accents. This includes a wide range of English accents, from American to British variants, such as Received Pronunciation (RP) and Brixton. Additionally, for Google Workspace users, integration with Google Vids provides access to 30 conversational voice options across 24 languages, greatly enhancing accessibility and localization for businesses and content creators.
Safety Measures with Built-in Watermarking
In response to rising concerns about AI-generated media, all audio produced by the Gemini 3.1 Flash TTS model features SynthID watermarking. This innovative solution embeds an imperceptible watermark directly into the audio output, allowing for the reliable detection of AI-generated content. Google emphasizes that this method is designed to help identify synthetic content and mitigate misinformation risks.
How to Access Gemini 3.1 Flash TTS
The Gemini 3.1 Flash TTS model is currently available for developers in preview through the Gemini API and Google AI Studio. Enterprise teams can test the model on Vertex AI, while Google Workspace users can find it integrated within Google Vids. This widespread accessibility allows a broad audience of developers and creators to leverage the advanced capabilities of this new TTS model.
In summary, Gemini 3.1 Flash TTS represents a significant advancement in text-to-speech technology, combining natural-sounding voices with enhanced control features and robust safety measures. As Google continues to push the boundaries of AI, tools like Gemini 3.1 will undoubtedly pave the way for more innovative applications in various fields.
Source: eWEEK News