Data Party THU

Jul 13, 2026 · Artificial Intelligence

From QA to Task Completion: Survey of LLM Agent Systems and Harness Design

This survey argues that modern LLM agents should be viewed as a coupled system of a foundational model and an execution harness, analyzes the evolution from prompt engineering to harness engineering, defines six core harness responsibilities, examines task pressures, proposes richer evaluation metrics, and outlines future research directions.