Google Paper: OO-Harness Specialist Harnesses Outperform One Global Agent Harness
The object-oriented structure explains why single-harness tuning keeps trading one task type's gains for another's losses, and shows a router can avoid that cost on out-of-distribution tasks. Teams building agentic pipelines can adopt the pattern directly: keep the base harness as fallback and route to specialists only when runs match known failure clusters. The AutomationBench comparison against Meta-Harness gives a concrete baseline for evaluating similar routing setups.
