

GPU specialist against peer marketplace, priced against each other on the 5 GPUs both of them rent. Published per-GPU on-demand rates as each provider last stated them, with what their own pages say about billing, commitment and egress beside the numbers.
Vast.ai is cheaper on 5 of the 5 cards both of them rent, by a median of 53%.
These are not the same product. A GPU specialist and a peer marketplace differ in who your counterparty is, which is why the rates below can be far apart without either being wrong. The prices are comparable; what stands behind them is not.
The 5 cards both of them rent, cheapest published per-GPU on-demand rate each. Dearest first.
| GPU | Lambda | Vast.ai | Difference |
|---|---|---|---|
| NVIDIA B200 SXM6 180GB | $6.69/hr | $6.25/hr | 7% cheaper on Vast.ai |
| NVIDIA H100 SXM5 80GB | $3.99/hr | $1.87/hr | 53% cheaper on Vast.ai |
| NVIDIA H100 PCIe 80GB | $3.29/hr | $2.47/hr | 25% cheaper on Vast.ai |
| NVIDIA A100 SXM4 80GB | $2.79/hr | $0.67/hr | 76% cheaper on Vast.ai |
| NVIDIA RTX A6000 48GB | $1.09/hr | $0.40/hr | 63% cheaper on Vast.ai |
Per GPU per hour, on-demand list prices as each provider last published them. Rates exclude tax and vary by region; a cheaper rate is not the same machine, the same network or the same support.
| Lambda | Vast.ai | |
|---|---|---|
| Billing granularityOn short jobs this outweighs the rate: an hour minimum on a 90-second run costs more than a 30% dearer per-second rate. | Per minute | Per second |
| Minimum commitment | None on demand; 2 weeks on clusters | $5 minimum to start |
| Payment model | Postpaid, weekly invoices; clusters invoiced on reservation | Prepaid credits; optional auto top-up |
| Egress | Free | Priced per byte by each host |
| Regions | 14 regions: US (9), Japan (2), India, Germany, Israel | 40+ data centres worldwide |
Neither site tells you whether your data trains their models, an uptime SLA, whether you get credits when it breaks or whether a commitment auto-renews. We looked on both and record the absence rather than filling it in — if you need any of it, ask before you commit.
Vast.ai is cheaper on 5 of the 5 cards both of them rent, by a median of 53%.
NVIDIA B200 SXM6 180GB, NVIDIA H100 SXM5 80GB, NVIDIA H100 PCIe 80GB, NVIDIA A100 SXM4 80GB, NVIDIA RTX A6000 48GB — 5 in total, on published per-GPU on-demand rates.
Of the cards both rent, Lambda starts at $1.09 per GPU-hour and Vast.ai at $0.40.
No. Lambda is a GPU specialist — an operator whose whole business is renting these cards. Vast.ai is a peer marketplace — a stranger whose machine the platform vets to some degree. Reliability, bandwidth and how long the machine stays online vary by host, not just by price. The rates are comparable; what stands behind them is not.