DeepSeek leads OpenRouter market share for the week of October 12 with overwhelming trader consensus, reflecting its V4.1 Flash large language model’s sustained dominance in routed token volume. Recent snapshots show the lab capturing roughly 23-28% of tracked usage through low-cost, high-throughput inference suited to agentic and high-volume developer workloads, outpacing rivals like StepFun and Z.ai whose top models trail significantly in weekly tokens. This edge stems from ongoing model updates, open-weight accessibility, and competitive pricing that favors routing decisions on the marketplace over pure benchmark scores. A late-week surge from a new competitor release or abrupt pricing shift could narrow the gap, though sustained leadership through mid-October makes such reversals unlikely.