Coval raises $28M as enterprises push voice agents into production

Voice artificial intelligence testing startup Coval Inc. revealed today that it has raised $28 million in new funding to expand its platform as more enterprises put voice agents into production.

Founded in 2024, Coval offers software that runs simulations, tracks live performance and labels data for AI voice and chat agents. Companies use it to test agents before launch and to monitor them afterward.

The case the company makes is that voice agents fail differently than ordinary software. They stumble over accents, background noise and dropped calls and they get tripped up by customers who do not say what a script expects. Many enterprises still check this work by hand, which Coval says does not scale.

Founder and Chief Executive Brooke Hopkins built evaluation infrastructure at Waymo LLC, Alphabet Inc.’s self-driving car unit, before starting the company. Coval frequently draws the comparison between the two. A voice agent runs several models at once to transcribe speech, work out a response and speak it back, which the company likens to the perception and planning systems in a self-driving car. In both cases, it says, simulation is the practical way to test at scale.