**B200 GPU rental rates on major cloud platforms currently cluster between roughly $5.10 and $8.60 per GPU-hour on-demand, with medians reported near $6.25–$7.99 across providers such as Vast.ai, RunPod, Lambda, and CoreWeave.** Spot and reserved tiers sit lower, often $3.90–$5.50. As of mid-October 2026, live listings show limited downward pressure over the prior two weeks, with weekly medians holding flat or edging modestly higher amid steady AI training and inference demand. Supply of Blackwell B200 capacity continues to expand gradually, yet high utilization from frontier-model workloads and constrained near-term availability keep on-demand pricing elevated. Traders assign 75.5% implied probability to $6.50+ at month-end, reflecting the narrow window before additional nodes could arrive and the absence of catalysts that would trigger a rapid softening. Key near-term watchpoints include any fresh capacity announcements or shifts in spot-market liquidity.