Coval's $28M Series A Targets Voice AI Reliability

Coval, an evaluation platform for voice AI agents, raised $28 million in a Series A round led by Norwest. Participation came from Base10 Partners, Twilio Ventures and Y Combinator. The company has now raised $31 million total since launching in 2024.

Coval builds simulation, observability and labeling tools for AI voice and chat agents. Fortune 500 companies are testing voice AI for customer service and sales. Coval gives them infrastructure to run evaluations at scale, the company said.

The new money goes toward reliability and compliance hurdles enterprises face when deploying autonomous voice agents. Coval runs tens of millions of evaluations today. It plans to expand its sales and solutions engineering teams to meet growing demand. Product improvements will include deeper simulation, new integrations, and better human review and monitoring features.

Voice AI adoption is accelerating across industries. Companies need testing platforms before putting agents in front of customers. Coval’s funding round signals investor appetite for that infrastructure layer.