**High sustained demand for Blackwell GPUs amid persistent supply constraints is anchoring B200 on-demand rental rates near or above $6.50 per GPU-hour.** As of early October 2026, tracked medians across providers range from roughly $6.70–$6.97, with spot or community listings lower but on-demand figures—especially from established clouds—clustered in the $6.50–$8.60 band. Recent moves, including Nebius’s October 1 increase to $8.50 and broader 30-day upward trends in indices, reflect tight HBM3e memory and advanced packaging capacity that continue to limit new supply. With only weeks until month-end, trader consensus at 82% for $6.50+ prices captures the expectation that these bottlenecks and AI workload growth will keep rates elevated rather than allowing a quick correction.