Tech Architecture Stories

Sep 25, 2026 · Artificial Intelligence

Why LLMs Shouldn't Think Everything: Jev, Codex, and the Heterogeneous Agent Revolution

The article argues that AI agents waste compute by using large language models for low-entropy decisions, and introduces Jev, a lightweight decision model that handles tool routing, code search, and log triage in milliseconds, enabling a System 1/System 2 architecture where Jev filters noise before Codex performs deep reasoning, a pattern mirrored by Glean's enterprise search stack.