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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 Eleven Realtime?

Eleven Realtime presents a speech-to-speech API that is designed specifically for developers, allowing them to incorporate live voice interactions into their applications and AI agents. This cutting-edge service combines speech recognition, turn-taking features, language-model logic, and voice synthesis while offering both Mini and Max model variations to suit different conversational needs. Developers can easily utilize these models via the Realtime API or through ElevenAgents, ensuring smooth integration into their systems. The streaming interface is meticulously designed to improve interactive voice experiences across a range of applications, including virtual assistants, customer support platforms, educational tutors, and engaging characters. Customization options for agent configurations permit adjustments to prompts, voices, tools, knowledge bases, and conversational flows, providing remarkable flexibility. Moreover, the usage of Realtime is billed on a per-minute basis, with additional charges for model input and output tokens. This product is tailored for developers and organizations that prioritize real-time conversational experiences and voice-driven customer interactions, significantly boosting user engagement and satisfaction levels. With its extensive capabilities, Eleven Realtime stands out as an essential tool for contemporary application development, proving to be an asset for those aiming to innovate in the field of interactive voice technology.

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

ElevenLabs
OpenAI

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided

Pricing Information

Realtime agents are billed at the standard ElevenAgents per-minute rate plus input, cached-input, and output-token charges for the selected model. Eleven Realtime v1 Max costs more per token than Mini; rates vary by plan and model.

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / 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

ElevenLabs

Date Founded

2022

Company Location

United States

Company Website

elevenlabs.io/realtime

Categories and Features

AI Models

Not specified

AI Voice Models

Not specified

Text to Speech

Not specified

Categories and Features

AI Voice Models

Not specified

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