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Sep 14, 2026 · Artificial Intelligence

NVIDIA HoH Shows Structured Iteration Beats Repetition for AI Coding Agents

NVIDIA's Harness-of-Harness (HoH) adds an orchestration layer to AI coding agents, using a three-role loop (Planner, Developer, QA Tester) to enable multi-day autonomous development. Experiments on GameCraft-Bench show HoH achieves higher scores with fewer tokens than naive repetition, and ablation studies confirm re-planning, evidence feedback, and code inheritance are each critical. Major tech firms are now productizing agent harnesses as independent infrastructure layers.