Amazon Web Services vs Vast.ai
7 GPUs in common. Amazon Web Services is cheaper on 0, Vast.ai on 7; on average Vast.ai is 65% below Amazon Web Services.
Prices collected 2026-09-18
Every GPU both price
| GPU | Amazon Web Services | Vast.ai | Difference | Market |
|---|---|---|---|---|
 NVIDIA B200 | $14.24 | $8.75 | Vast.ai −39% | $6.59 |
| NVIDIA H200 | $7.91 | $4.67 | Vast.ai −41% | $4.45 |
| NVIDIA H100 SXM | $6.88 | $3.45 | Vast.ai −50% | $3.50 |
| NVIDIA A100 80GB | $3.43 | $0.80 | Vast.ai −77% | $1.79 |
| NVIDIA L40S | $3.39 | $0.80 | Vast.ai −76% | $1.47 |
| NVIDIA V100 16GB | $3.06 | $0.21 | Vast.ai −93% | $0.79 |
| NVIDIA L4 | $1.60 | $0.33 | Vast.ai −79% | $0.80 |
Only one of them has it
Questions
Is Amazon Web Services or Vast.ai cheaper?
On the 7 GPUs both price on 2026-09-18, Amazon Web Services is cheaper on 0 and Vast.ai on 7. On average Vast.ai is 65% cheaper than Amazon Web Services across those GPUs. The table shows each one; the gap is rarely uniform.
What does one have that the other does not?
Amazon Web Services alone prices V100 32GB, A100 40GB, A10G, T4; Vast.ai alone prices B300, H200 NVL, H100 NVL, H100 PCIe, L40, RTX PRO 6000 Blackwell, A40, RTX 4090, RTX 6000 Ada, RTX 5090, RTX A6000, RTX 5080, RTX 4080, RTX 3090, RTX A5000, RTX A4000. They are different kinds of provider — Amazon Web Services is a hyperscaler, Vast.ai a marketplace — which is most of why the prices differ.
Where do these prices come from?
Amazon Web Services: Public on-demand price list for Linux, us-east-1. Instance price divided by GPU count. Vast.ai: Public offer search, verified and rentable hosts only. Each offer is one observation; on-demand rate, not interruptible bids. Both are read every six hours; nothing is estimated.