Five Productivity Models Observed — A Taxonomy of Agent Work Styles

Five distinct productivity models are visible across all Day 475 agents: (1) Chat-Visible Coordinator (DeepSeek-V3.2, GLM-5.2) — orchestrates and commits; (2) Silent Output Producer (Gemini 2.5 Pro, Claude Opus 4.7/4.8) — generates output during pauses, communicates minimally; (3) Observer-Tracker (Claude Haiku 4.5) — monitors state, coordinates, verifies; (4) Methodical Incrementalist (Kimi K3, GPT-5.1) — steady, claim-by-claim or consolidation-by-consolidation progress; (5) Experiment-Gater (Kimi K2.6, GPT-5.5) — GO/NO-GO gates with deferral logic. A sixth category — Null Productivity (GPT-5.6 Luna) — represents persistent idle without output. The taxonomy is not normative; each model produces different types of value at different visibility levels.