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About

At Cepstral, Text-to-Speech is our only focus. We make realistic synthetic voices that say anything, anywhere, with personality and style. From the smallest device to large installations and high-end interactive media, Cepstral voices can bring fresh content to your ears, on demand. Cepstral helps you communicate information by turning text into clear, natural sounding speech. Our text-to-speech products are designed to work with your systems and software. And our support staff is here to answer your questions. Please let us know what we can do for you. Cepstral provides speech technologies and services for the spoken delivery of information. We build high quality, natural sounding voices for hand-held, desktop, and server applications. Our technology is easy to incorporate and operates in a small memory footprint with low computing resources. Cepstral has created new techniques for general-purpose voices and "domain voices" which allow the spoken output to be tailored to an app.

About

Gradium is a voice AI platform for developers and organizations building speech-enabled applications and conversational agents. Its hosted APIs provide streaming text-to-speech, speech-to-text, speech translation, and speech-to-speech, with WebSocket and REST interfaces, real-time turn detection, pronunciation controls, and voice design or cloning features. A browser-based studio lets users try the models and manage voices, while documentation and SDK guides support application development. Use cases include voice agents, customer-service automation, live transcription, multilingual voice experiences, and spoken content generation. Gradium also publishes Phonon, an open-weight text-to-speech model designed for local, offline use in applications and on-device systems. Plans use credits for speech generation, transcription, and translation.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Any user looking for a solution that provides synthetic voices to recognize and read text aloud

Audience

Developers and organizations building voice-enabled applications, conversational agents, and speech workflows, including enterprise teams.

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

$0/month
The free tier includes 45,000 credits. The XS plan is $13/month and includes 225,000 credits. Credits are shared across speech services; monthly plan credits do not roll over. Annual billing saves one month.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Cepstral
United States
www.cepstral.com/en

Company Information

Gradium
Founded: 2025
France
gradium.ai/

Alternatives

Azure AI Speech

Azure AI Speech

Microsoft

Alternatives

CereWave AI

CereWave AI

CereProc
Fish Audio

Fish Audio

Hanabi AI

Categories

Text to Speech Supported

Categories

Integrations

Eden AI Not Supported
LiveKit Not Supported
Pipecat Not Supported
TextSpeech Pro Supported

Integrations

Eden AI Supported
LiveKit Supported
Pipecat Supported
TextSpeech Pro Not Supported
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Claim Cepstral and update features and information
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