AI Coding Agent Runs for 8 Hours Only to Loop: Long-Horizon Task Reliability Questioned

john__allard · x · 2026-08-07

A developer reported significant limitations when using AI coding agents (Codex) for complex tasks like mapping features onto plots. The user noted that while the agent made rapid initial progress (about 30%), it started tripping over itself and its sub-agents when asked for more detail. After running overnight for 8 hours, the agent simply twisted itself into loops. The experience highlights the ongoing stability and logical challenges current AI agents face with long-horizon, complex tasks.

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