METR Study Examines Task-Completion Time Horizons of Frontier AI Models

Summary

METR (Model Evaluation & Threat Research) has published research examining the task-completion time horizons of frontier AI models, measuring how long and how complex the tasks are that current leading AI systems can autonomously complete. This line of research tracks the progression from models that can handle short, well-defined tasks to those capable of sustaining coherent work over extended periods — a key benchmark for agentic AI capability. The study is significant because task-completion