Rox raises $100M Series B at $1.3B valuation for AI sales agents

Rox said annual recurring revenue grew more than tenfold during its first year on the market, and its customers include Puma, Groq and Ramp. The new capital will fund AI research and custom-model development, while the company widens its enterprise reach into healthcare, industrial, financial services, energy and technology. Existing investors Sequoia Capital and Factory took part, joined by Databricks Ventures and Prosperity7 Ventures.

The round values the San Francisco company at $1.3 billion post-money, which includes the new $100 million. Rox describes its platform as reaching beyond outbound lead generation, so the product covers more of the revenue workflow than a single prospecting tool.

For founders, the round shows investors paying for fast revenue growth in AI sales agents. Building custom models alongside application features signals that a vertical AI company is investing in its own model layer rather than relying only on third-party APIs.