Milliman Releases Opensource Platform System, an AI-Enhanced Platform for Deploying Python Models

The Opensource Platform System unifies model execution, workflow orchestration, and governance, with an embedded agentic AI assistant

SEATTLE--(BUSINESS WIRE)--Milliman, Inc., a leading global actuarial and consulting firm, today released Milliman Opensource Platform System, an AI-enhanced platform for executing, managing, and deploying actuarial Python models at scale.

The Milliman Opensource Platform System brings model execution, workflow orchestration, and governance into a single environment, with on-demand compute, native connections to code repositories and data sources, and complete role-based access and audit trails. At its center is an embedded agentic AI assistant that carries out multi-step tasks alongside the actuary—setting up runs, tracing dependencies, and handling routine model operations—so teams spend less time maintaining infrastructure and more time on analysis.

"Actuarial teams pour their energy into Python models, but then lose efficiency to the plumbing around them," said Pierre Miehe, principal and head of Milliman Opensource Platform System. "Our Opensource Platform System lifts that weight, and its agentic assistant does real work, running and managing models step by step under full governance."

"The actuary of the future won't be replaced by AI; they'll be amplified by it," said Jim Fulton, CEO of Milliman. "The Opensource Platform System is another example of where the profession is heading, with people setting strategy and judgment while intelligent agents handle the machinery. Milliman intends to lead that shift."

With the Opensource Platform System and Milliman Integrate^TM, Milliman's actuarial modeling solutions now span from open, Python-based development to flexible, governed modeling on trusted calculation libraries. Milliman's investment in AI also extends to Integrate, where Ask Integrate, a knowledge assistant grounded in vetted actuarial frameworks and workflows, is already at work, with agentic capabilities in development.

To learn more, visit Milliman Opensource Platform System.

About Milliman AI Solutions

Milliman AI Solutions is dedicated to delivering AI-powered products and advisory services to the insurance, healthcare, and benefits markets. By combining Milliman's unparalleled subject matter expertise with leading artificial intelligence capabilities, Milliman AI Solutions helps clients transform data into decisions and complexity into competitive advantage. For more information, visit AI solutions built for insurance, healthcare, and employee benefits | Milliman | Worldwide.

About Milliman

Milliman leverages deep expertise, actuarial rigor, and advanced technology to develop solutions for a world at risk. We help clients in the public and private sectors navigate urgent, complex challenges, from extreme weather and market volatility to financial insecurity and rising health costs—so they can meet their business, financial, and social objectives. Our solutions encompass insurance, financial services, healthcare, life sciences, and employee benefits. Founded in 1947, Milliman is an independent firm with offices in major cities around the globe. Visit us at milliman.com.