What is Gradium and what does it do?

Gradium is a startup developing AI voice models that deliver ultra-low latency and realistic voice output for developers.

How much funding did Gradium raise?

Gradium raised a $70 million seed round from investors including FirstMark Capital and Eurazeo.

Which languages does Gradium support?

Gradium launched with support for English, French, German, Spanish, and Portuguese, with more languages planned.

Home / Business and Economy / AI Voice Startup Gradium Raises $70M Seed

AI Voice Startup Gradium Raises $70M Seed

2 Dec, 2025

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Summary

Gradium secured $70 million in seed funding.
The startup aims for ultra-low latency AI voice responses.
It launched with support for five European languages.

AI Voice Startup Gradium Raises $70M Seed

Gradium, an AI startup originating from the French research lab Kyutai, announced its public launch, backed by a significant $70 million seed funding round. Investors like FirstMark Capital, Eurazeo, and Xavier Niel participated in the round, signaling strong confidence in the company's vision.

The startup is dedicated to creating AI voice models that deliver near-instantaneous responses with exceptional realism and accuracy. Founded in September 2025 by Neil Zeghidour, who has prior experience with voice models at Google DeepMind, Gradium aims to simplify voice AI integration for developers.

While facing competition from established AI players and other startups, Gradium is launching with multilingual capabilities, including English, French, German, Spanish, and Portuguese. The increasing demand for sophisticated AI voice agents across entertainment, work, and other sectors positions Gradium to address a growing market need.

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