a1 family
The a1 family has 6 sizes on AWS EC2, from 1 to 16 vCPUs and 2 to 32 GiB of memory. In US East (N. Virginia), on-demand prices run $0.0255 to $0.408 per hour for Linux. It is sold in 9 regions and listed as Arm (Graviton) and general purpose.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | On-demand /hr | Spot /hr | 1-yr reserved /hr |
|---|---|---|---|---|---|
| a1.medium | 1 | 2 | $0.0255 | $0.0239 | $0.0161 |
| a1.large | 2 | 4 | $0.051 | $0.0477 | $0.0321 |
| a1.xlarge | 4 | 8 | $0.102 | $0.0954 | $0.0643 |
| a1.2xlarge | 8 | 16 | $0.204 | $0.1909 | $0.1285 |
| a1.4xlarge | 16 | 32 | $0.408 | $0.3822 | $0.257 |
| a1.metal | 16 | 32 | $0.408 | $0.3818 | $0.257 |
Categories
Regions
Prices in USD per hour for Linux; reserved prices are 1 year, no upfront. Updated 2026-11-12 from AWS public price lists. Compare all AWS EC2 instance types.