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Voice 2026 Rank: #2669

Gradium ✓

Ultra low-latency voice AI for developers.

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API Voice AI Developers Tool
More categories (4)
Low Latency Speech To Text Text To Speech Voice
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Free + from $12/mo

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Verdict

A quick read before you dig into the full page.

Best if
Ultra low-latency voice AI for developers
Skip if
Limited offline feature info
Pick this when
Ultra low latency

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Overview

Gradium is an advanced voice AI tool specifically designed for developers. It focuses on creating ultra low latency voice AI models providing a range of services including expressive text to speech, accurate speech to text, and high fidelity voice cloning.

These are achieved through a unified API. Gradium's text-to-speech model converts text into a natural sounding voice, while the speech-to-text model allows for an instant transcription of audio into text.

The AI tool also offers a voice cloning feature, enabling users to create either instance or professional voice clones. It incorporates live translation that converts voice-to-voice in real time and is catered for multiple languages and regional accents, enhancing its global appeal and usability.

Capable of operating in offline mode, Gradium's on-device text-to-speech feature offers real-time natural voice output. Furthermore, the company provides resources for app development through Gradbot, where voice agents can be built with a single prompt.

As Gradium is in active development, the company also updates its users through release notes allowing users to stay updated on the latest improvements and additions to the tool.

Gradium website

Access & connections

Where you can use Gradium.

Platforms

Web

Capabilities

What this tool accepts, produces, and is strongest at.

Input

  • Text
  • Audio
  • API

Output

  • Audio
  • Text
  • API

Pros & cons

Pros

  • Ultra low latency
  • Expressive text to speech
  • Accurate speech to text
  • High fidelity voice cloning
  • Unified API
  • Live translation
  • Supports multiple languages
  • Caters to regional accents
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  • Offline mode capabilities
  • Real-time natural voice output
  • Voice-to-voice conversion
  • App development resources
  • Voice agents through Gradbot
  • Instance or pro voice clones
  • Active tool development
  • User updates through release notes
  • TTS feature on-device
  • Real time voice conversion

Cons

  • Limited to developers
  • Only unified API
  • Unclear voice cloning legality
  • No specific language list
  • Updates may disrupt service
  • Potential latency in live translation
  • In 'active' development
  • Limited offline feature info
Show 1 more
  • No specific regional accent list

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Releases 1

Initial release August 28, 2026 Current
Initial release of Gradium.

FAQ 12

What is Gradium?
Gradium is an advanced voice AI technology designed for developers. It is developed to create ultra low latency voice AI models that offer a wide range of services, such as expressive text to speech, accurate speech to text, and high fidelity voice cloning. Gradium's features are accessible through a unified API, making it easier for developers to use.
How does Gradium's text-to-speech feature work?
Gradium's text-to-speech feature works by converting text into a natural sounding voice. This is achieved through advanced voice AI models that are designed to generate expressive speech from written text.
Can Gradium convert speech into text?
Yes, Gradium does have the capability to instantaneously convert speech into text. This feature makes transcription of audio into text both easy and fast.
What is the voice cloning feature in Gradium?
Gradium's voice cloning feature allows users to create either instance or professional voice clones. This means it can duplicate a certain voice personality giving the output the same characteristics as the cloned voice.
Does Gradium offer live voice-to-voice translation?
Yes, Gradium does offer live voice-to-voice translation. This feature transforms and translates voice inputs into voice outputs in real-time, allowing for effective communication across different languages.
How does Gradium cater to multiple languages and regional accents?
Gradium caters to multiple languages and regional accents through its specific AI models. These models are designed to understand and adapt to a variety of languages and accents, thereby enhancing its global usability.
Can Gradium operate in offline mode?
Yes, Gradium can operate in offline mode. Specifically, its on-device text-to-speech feature is capable of functioning offline, while still providing real-time natural voice output.
What is Gradbot?
Gradbot is a tool provided by Gradium that allows developers to build voice agents with just a single prompt. It simplifies the process of voice agent creation, making it possible even for those with minimal programming knowledge.
How can I use Gradium for app development?
Gradium can be used for app development by leveraging the various AI services it provides like text-to-speech, speech-to-text, voice cloning, or live translation. These features can be accessed and integrated into the app through Gradium's unified API.
Where can I access the latest updates and improvements in Gradium?
The latest updates and improvements in Gradium can be accessed through the 'Release Notes' on their website. This section is regularly updated with recent enhancements and additions to the tool.
Is Gradium's voice AI low latency?
Yes, Gradium's voice AI is low latency. The technology is specifically designed to deliver ultra-low latency performance for voice-based AI models.
What does a unified API in Gradium mean?
A unified API in Gradium refers to a single application programming interface that developers can use to access the multiple features and services offered by Gradium, including its text-to-speech, speech-to-text, voice cloning, and live translation features.
Gradium Free + from $12/mo
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