Mike Gerstenzang (Cleary Gottlieb): AI from the Inside

Michael A. Gerstenzang, the longtime managing partner and now senior partner of Cleary Gottlieb Steen & Hamilton, explains how he positioned one of the world's most established law firms to lead in AI adoption — not by outsourcing innovation, but by building it from the inside. The conversation traces a series of structural bets that began before generative AI entered the mainstream, starting with ClearyX, a wholly owned technology subsidiary launched in 2021 to reinvent M&A due diligence. Gerstenzang describes the venture's founding provocation — imagine the business that puts Cleary Gottlieb out of business, and build it — and how A/B testing against traditional associate-led diligence demonstrated equal or superior quality at roughly half the cost.The discussion turns to the firm's acquisition of Springbok AI, a legal technology development company whose team now forms Cleary's internal AI acceleration unit, and what that acqui-hire reveals about a deeper challenge confronting every major firm: how to attract and retain elite technologists who would otherwise choose OpenAI or Anthropic over a law firm. Gerstenzang argues that the profession's relationship to technology must shift from infrastructure maintenance to client-facing partnership, and that partners need not master AI themselves but must stop building walls and start supporting those who build windmills. The episode examines the billable hour's structural misalignment with AI-driven efficiency, the emergence of fixed-fee and subscription billing models, and why firms that resist technological adoption will not preserve their margins but simply lose the work to competitors who embrace it.Throughout, Gerstenzang is unsparing about the limitations of the traditional law firm model but remains deeply optimistic about the future of lawyering — practiced increasingly alongside, and powered by, sophisticated technology.For more conversations with the figures reshaping the legal business, subscribe to New Law Order. For a CLE-eligible version of this interview and more legal analysis, visit www.talksonlaw.com. For questions or comments, email [email protected]. Michael A. Gerstenzang, the longtime managing partner and now senior partner of Cleary Gottlieb Steen & Hamilton, explains how he positioned on