Autonomous multi-agent systems face significant challenges in achieving reliable performance, akin to the final stages of developing self-driving cars, where the last 5% of reliability is as challenging as the first 95%. Victor Dibia of Microsoft Research highlights the complexities that AI teams encounter, particularly as advanced models like Copilot can still falter in tasks, leading to negative business impacts and eroding customer trust. Ensuring AI agent reliability involves understanding their non-deterministic nature and the new categories of failure modes they introduce, such as cascading errors in multi-agent systems. As these systems take on more critical business functions, failures can severely damage reputations and trust. Addressing these challenges requires designing robust architectures, implementing comprehensive testing and adaptive learning systems, and establishing production-ready deployment procedures. Galileo's platform offers solutions like end-to-end workflow visibility, proprietary evaluation metrics, and real-time monitoring to help teams build reliable AI agents, emphasizing the need for specialized tools to handle the unique demands of non-deterministic AI behavior in production environments.