Gartner Forecasts High Failure Rate for Mainframe Migration Projects Relying on Generative AI

Gartner predicts that more than 70% of mainframe exit projects started in 2026 will not achieve their intended benefits. This is primarily attributed to an overestimation of generative AI's capabilities in transforming and migrating complex legacy code. The firm highlights a significant discrepancy between the marketing claims of GenAI and its practical application in such intricate tasks.