Gradium

Unknown

• Updated Aug 31, 2026, 03:16 PM

Gradium is a voice AI platform offering ultra-low-latency APIs for text-to-speech, speech-to-text, live translation, and voice cloning.

Use Cases ▼

Building real-time voice agents and assistants

Adding expressive text-to-speech to apps and content

Transcribing meetings, calls, or audio streams instantly

Live voice-to-voice translation for multilingual conversations

Creating instant or professional voice clones for media

Deploying on-device TTS for offline voice experiences

Generating voiceovers for videos, games, and interactive media

What Problem It Solves ▼

Developers need voice AI that responds in real time without noticeable delay. Gradium solves this by providing ultra-low-latency APIs for speech generation, transcription, translation, and voice cloning, enabling natural voice agents, live translation, and interactive voice applications through one integration.

Key Features ▼

✓

Ultra-low-latency voice AI suitable for real-time agents

✓

Multiple voice capabilities in one API: TTS, STT, translation, and cloning

✓

Expressive and natural-sounding speech generation

✓

On-device TTS option for offline use

✓

Strong backing and rapid scaling with NVIDIA investment

Overview

Gradium is a voice AI platform offering ultra-low-latency APIs for text-to-speech, speech-to-text, live translation, and voice cloning. It is designed for developers and voice agents, providing a single API to generate expressive speech, transcribe audio, translate voice in real time, and create high-fidelity voice clones. The platform also includes an on-device TTS model for offline real-time natural voice generation.

Full Description ▼

The service is currently in public beta, with a new Gradium TTS model live. Gradium provides a studio for experimentation, documentation for quick integration, a status page for system monitoring, and a trust center for security and compliance. The company has extended its seed funding to $100 million with NVIDIA as an investor and opened a Silicon Valley office to scale its real-time voice AI. It also offers Gradbot for building voice agents in a single prompt and an app gallery showcasing applications built on Gradium.