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Average Ratings 0 Ratings

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ease
features
design
support

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Description

Gemini 3.8 Flash TTS is a generative text-to-speech model from Google designed for expressive voice creation, character design, dialogue direction, and multilingual audio production. Instead of limiting users to fixed voice presets, the model can create entirely new vocal identities from natural-language descriptions. Developers and creators can specify attributes such as accent, role, timbre, speaking style, pacing, and other voice characteristics across more than 100 languages and dialects. The model also offers access to more than 2,000 production-ready voices and supports voice replication from a short authorized audio sample. Performance controls allow users to direct individual lines with stage directions, pacing instructions, dialect shifts, emotional cues, and conversational backchanneling. Gemini 3.8 Flash TTS supports long-form generation while maintaining voice consistency, making it suitable for podcasts, audiobooks, localization, and other extended audio projects. Native two-speaker scene support lets users create multi-turn conversations from a single script while preserving distinct voices and natural turn-taking. Google includes consent verification, SynthID watermarking, and C2PA credentials to provide greater transparency and safeguards around generated and replicated voices. Gemini 3.8 Flash TTS can be used through Google AI Studio and the Gemini API and is intended for developers, creators, enterprises, media companies, and teams building expressive speech experiences.

Description

SpeechData.ai operates as a commercial service that curates and provides collections of conversational speech data, which are essential for developing and assessing Automatic Speech Recognition (ASR), Text-to-Speech (TTS), and various voice-AI technologies. Their platform features an extensive catalogue of 60 conversational datasets in 60 different languages and dialects, encompassing a remarkable total of 73,000 hours of audio recorded from 7,250 distinct speakers. Each listing provides details about spontaneous two-person dialogues, includes dual-channel audio, and offers time-aligned, human-verified transcripts along with speaker metadata and consent documentation, with pricing ranging from USD 60 to 95 per audio hour. Customers have the option to request audio samples and can also commission additional data collection tailored to specific requirements. Beyond this, the service includes transcription and audio annotation capabilities. Typical purchasers comprise teams focused on acquiring speech data for training and evaluating their models. The availability of datasets, licensing agreements, and final costs are influenced by factors such as the chosen language, the extent of data collection, and the specific terms negotiated for the project. Additionally, the platform aims to facilitate seamless access to high-quality speech data for a variety of applications in the voice technology sector.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

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

Integrations

Gemini No 
Gemini 3.1 Flash-Lite No 
Gemini 3.1 Pro No 
Gemini Enterprise No 
Gemini Enterprise Agent Platform No 
Gemini Live API No 
Gemini Notebook No 
Google AI Studio No 
Google Vids No 
SynthID No 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

USD 60 per audio hour
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based No 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs No 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Google

Founded

1998

Country

United States

Website

google.com

Vendor Details

Company Name

Spirelight ApS

Founded

2019

Country

Denmark

Website

www.speechdata.ai/

Product Features

Text to Speech

API No 
Adjust Speaking Rate / Pitch No 
Audio Optimization No 
Custom Lexicons No 
Different Voice Choices No 
Multi-Language Support No 
Synchronize Speech No 

Product Features

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