NVIDIA B200 GPU spot prices surge 114% to $4.95 per hour in six weeks, driven by major frontier model releases requiring Blackwell's memory capacity.

B200 spot prices on the Ornn Compute Price Index reached $4.95 per hour this week, up from $2.31 in early March. The price spread between B200 and prior-generation H200 doubled from $0.28 to $1.80 per hour.

Price spikes correlate with major model launches since September 2025. GPT-5.5's expanded context window requires memory headroom that only Blackwell provides. By November 2025 the B200-H200 gap collapsed to $0.28 as supply flooded the market; since February when GPT-5.3-Codex launched, the spread re-widened to $1.80.

Provider pricing has become increasingly fragmented. In September 2025, B200 prices across providers clustered tightly; today the spread has more than doubled, with some providers offering B200 near H200 prices while others command scarcity premiums. For AI startups, the spot market leads contract pricing by ~90 days, and B200 likely settles above $5.00 for the summer.