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What is Gemini 3.8 Flash TTS?

Gemini 3.8 Flash TTS is Google’s advanced text-to-speech model for generating expressive, customizable, and multilingual synthetic speech. The model is designed for creative voice direction, allowing users to generate original characters and vocal personas using natural-language instructions instead of relying only on preset voices. Voice characteristics can be customized by role, accent, timbre, pacing, delivery style, and other attributes across more than 100 languages and dialects. Google also provides a library of more than 2,000 production-ready voices for projects that do not require a newly generated vocal identity. Voice replication can recreate a consistent vocal profile from a short reference sample when the user has permission to use the voice, with built-in consent verification requirements. Creators can direct performances line by line with stage directions and cues for emotion, timing, whispers, pauses, laughs, sighs, gasps, and conversational reactions. Long-form generation is designed to preserve voice quality, pacing, and character identity across extended content such as audiobooks, podcasts, and narrated media. Native two-speaker scene staging allows a single script to produce natural multi-turn dialogue with distinct speakers and controlled conversational timing. These capabilities make Gemini 3.8 Flash TTS applicable to gaming, interactive characters, voice agents, media localization, dubbing, branded voices, podcasts, audiobooks, and other audio-production workflows. Google applies SynthID watermarking to generated audio and supports C2PA credentials and consent checks to improve transparency and protect voice owners. Gemini 3.8 Flash TTS is available through Google AI Studio and the Gemini API, with additional integrations and deployments across Google products, enterprise applications, and third-party developer platforms.

What is Acapela VaaS?

Integrating speech capabilities into your application has never been easier, thanks to the advent of Voice as a Service (VaaS). When your application requires vocal interaction, you can simply connect to our VaaS server, send the text you wish to be spoken, and let VaaS handle the vocalization. With a robust offering that includes support for 25 languages and up to 50 distinct voices, our cloud services are prepared to communicate for you at any time. Regardless of whether you are utilizing Flash or any other programming language that enables HTTP communication, our API ensures smooth access to the complete spectrum of Voice as a Service functionalities. This enables you to seamlessly weave speech into your app while maintaining oversight over various features, parameters, configurations, and effects associated with voice generation. To embark on this journey, you can register for a complimentary evaluation account, which provides full access to all services for 30 days and the ability to send around 100 messages each day. You will have the entire range of features, languages, and voices readily available for your use. Be sure to check out our Gallery to witness the incredible potential of VaaS and see how it can significantly improve your projects. Engaging with voice technology offers unprecedented accessibility and flexibility, making it an exciting time for developers. With these resources at your disposal, your applications can truly come to life through the power of speech.

Media

Media

Integrations Supported

Gemini
Gemini 3.1 Flash-Lite
Gemini 3.1 Pro
Gemini Enterprise
Gemini Enterprise Agent Platform
Gemini Live API
Gemini Notebook
Google AI Studio
Google Vids
SynthID

Integrations Supported

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided

Pricing Information

Pricing not provided
Free Trial Offered?

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Google

Date Founded

1998

Company Location

United States

Company Website

google.com

Company Facts

Organization Name

Acapela Group

Date Founded

2003

Company Website

www.acapela-vaas.com

Categories and Features

AI Models

Not specified

Text to Speech

Not specified

Categories and Features

Text to Speech

API
Adjust Speaking Rate / Pitch
Audio Optimization
Custom Lexicons
Different Voice Choices
Multi-Language Support
Synchronize Speech

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