Gradium

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Updated: Mar 14, 2026 ·

About

Gradium is an AI voice startup that develops audio language models designed to deliver natural, expressive, and ultra-low latency voice interactions at scale. The company provides a voice layer for modern applications and AI agents through its real-time, scalable voice APIs. These APIs include capabilities for speech-to-text (STT), text-to-speech (TTS), smart turn-taking, and instant voice processing.

Headquartered in Paris, France, Gradium focuses on building high-fidelity AI voice models that can perform diverse speech tasks. Its technology is engineered to support the integration of advanced voice functionalities into various customer applications, enhancing communication and interaction.

Recent News & Mentions

Dec 2, 2025FundingGradium - Seed

Financial History

Gradium has raised $70.0M across 1 funding round. Most recently, it raised $70.0M Seed in December 2025.

Total Raised

$70.0M

Valuation

N/A

Funding Rounds Raised

Date	Round	Lead Investors	Other Investors
Dec 2, 2025	$70.0M Seed		Guillermo Rauch

Financial History

Gradium has raised $70.0M across 1 funding round.

Total Raised

$70.0M

Valuation

N/A

Deep Dive

Gradium is at the forefront of developing audio language models, positioning itself as a key player in the AI voice technology sector. The company's core mission revolves around enabling highly natural, expressive, and ultra-low latency voice interactions, crucial for the next generation of AI-powered applications and agents. By focusing on these attributes, Gradium addresses the growing demand for more human-like and responsive digital communication.

The company's technological foundation is built upon sophisticated speech-to-text and text-to-speech artificial intelligence models. These models are made available to clients through a robust API framework, allowing developers and businesses to integrate Gradium's advanced voice capabilities into their own products and services. This API-driven approach ensures scalability and ease of adoption across various industries.

Gradium's offerings extend beyond basic voice conversion, incorporating features such as smart turn-taking and instant voice processing. These functionalities are vital for creating seamless and intuitive conversational AI experiences, where the system can intelligently manage dialogue flow and respond without perceptible delay. The emphasis on high-fidelity models ensures clarity and naturalness in spoken output.

Operating from Paris, France, Gradium contributes to the European AI ecosystem by innovating in the field of foundation models for voice. The company's work supports a wide array of applications, from customer service bots to interactive virtual assistants, by providing the essential voice interface.

Gradium's commitment to developing scalable and high-performance voice solutions underscores its strategic importance in the evolving landscape of artificial intelligence. Its technology is designed to empower modern applications with a sophisticated and reliable voice layer, facilitating more engaging and efficient user interactions.

Sources

Frequently Asked Questions

What specific types of voice interactions does Gradium's technology enable?

Gradium's technology enables natural, expressive, and ultra-low latency voice interactions, supporting capabilities such as speech-to-text, text-to-speech, smart turn-taking, and instant voice processing.

How does Gradium deliver its audio language models to customers?

Gradium provides its audio language models to customers through real-time, scalable voice APIs, allowing for integration into various modern applications and AI agents.

Frequently Asked Questions

What specific types of voice interactions does Gradium's technology enable?

How does Gradium deliver its audio language models to customers?

Gradium provides its audio language models to customers through real-time, scalable voice APIs, allowing for integration into various modern applications and AI agents.