Where Does Agent Reliability Come From? A Cross-Benchmark Decomposition of Verification Loops, Specialist Models, and Scaffolding in a Production Enterprise Agent
A preprint analyzes the Leni production enterprise agent to determine the sources of reliability improvements across three public benchmarks. The study finds that while the full system outperforms its base model by up to 15 percentage points, most of the reliability gains come from scaffolding and specialist models, with the verification loop itself contributing a smaller but targeted improvement (+1.5 points), especially for the most challenging tasks. The work provides a detailed decomposition of these effects and presents empirical data on the verification loop's performance.
Why it matters: This decomposition clarifies which architectural components most effectively boost reliability in enterprise agent systems, informing future design choices for robust multi-step agents.
Full story at: arXiv Software Engineering ↗