Marsh McLennan scales agentic AI

Marsh McLennan just flipped the switch on agentic AI at global scale, launching LenAI—a proprietary assistant built with Oliver Wyman—across more than 80 countries. This isn’t a trial balloon: over a million prompts flowed through last week, and real-time governance is baked in, with dedicated human teams overseeing hundreds of thousands of transactions. By investing where AI adoption is tangibly high, Marsh is turning usage data into capital decisions, while sidestepping vendor lock-in via a multi-model, privately hosted stack. For clients, it’s a glimpse of what industrialized AI can really look like, and for Oliver Wyman, it’s a playbook for turning experiments into measurable business value with serious controls.

But here’s the catch: as Marsh productizes these tools and Oliver Wyman packages accelerators for other sectors, the speed of innovation bumps up against the realities of legal liability. Clients want indemnities, regulators want clarity, and the risk of autonomous agents is only getting sharper. Meanwhile, in the consulting deals race, Oliver Wyman landed in Tier II for Commercial Due Diligence—not top of the heap, but with unique access to insurance data that could shift the landscape if leveraged responsibly. The game now is about repeatable sector insights and proprietary data, not just scale.

On the global stage, Iraq is fast-tracking its $20 billion Development Road corridor, with Oliver Wyman co-authoring the management and financing plan. If Parliament ratifies the deal on time, expect a flurry of contracts and a new benchmark for sovereign megaproject execution. Featuring insights from Marsh International COO Puneet Satyawadi and reporting by Insurance Business and The Economy’s Markets Editorial Board.

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