a16z bets millions on Maven, a platform for cohort-based courses Maven, a startup that helps professionals teach cohort-based classes, has raised $20 million in a Series A round led by Andreessen Horowitz. The round places a16z general partner Andrew Chen on Maven’s board — and is his latest lead check in a creator-focused company, similarly pouring millions into recent rounds for Clubhouse and Substack. The investment comes seven months after Maven, then nameless, left stealth alongside a $4.3 million round led by First Round Capital, and three months after it raised a $750,000 equity crowdfunding round. While the company declined to disclose valuation, we do know that it’s a lot of fast cash earmarked toward fueling the same bet: that the future of cohort-based learning is the future of education.